WARNING. It is strongly advised that customers or non-HVAC certified technicians do not attempt any repairs on the refrigerant coil system or attempt to refill the refrigerant (such as Freon) in the heat pump. These systems require precise amounts of

<h2 id="pp01-or-pp1---inlet-water-temperature-sensor-failure"><u>PP01</u> or <u>PP1</u> - Inlet Water Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.0000%;"><div data-empty="true" style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong><span style="font-size: 18px;"><br></span></div></td><td style="width: 50.0000%;"><span style="font-family: Arial, Helvetica, sans-serif;">Check connection of the inlet water sensor <strong id="isPasted">OR</strong> Check if the sensor is broken</span></td></tr><tr><td style="width: 50.0000%;"><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif;"><strong><span style="font-size: 18px;">Solution</span></strong></span></div></td><td><span style="font-family: Arial, Helvetica, sans-serif;">Re-connect the sensor<strong id="isPasted">&#xA0;OR</strong> Replace the sensor</span></td></tr></tbody></table><p><br></p><h2 id="pp02-or-pp2---outlet-water-temperature-sensor-failure"><u>PP02</u> or <u>PP2</u> - Outlet Water Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.0000%;"><div style="text-align: center;"><span style="font-size: 18px;"><strong>Problem</strong></span></div></td><td><span style="font-family: Arial, Helvetica, sans-serif;">Check the connection of the outlet water sensor <strong>OR&#xA0;</strong>Check if the sensor is broken</span></td></tr><tr><td style="width: 50.0000%;"><div style="text-align: center;"><span style="font-size: 18px; font-family: Arial, Helvetica, sans-serif;"><strong>Solution</strong></span></div></td><td style="width: 50.0000%;"><span style="font-family: Arial, Helvetica, sans-serif;">Re-connect the sensor <strong>OR</strong> Replace the sensor</span></td></tr></tbody></table><p><br></p><h2 id="pp03-or-pp3---coil-temperature-sensor-failure"><u>PP03</u> or <u>PP3</u> - Coil Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.0000%;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><span style="font-family: Arial, Helvetica, sans-serif;">Check the connection of the coil temperature sensor <strong>OR</strong> Check if the sensor is broken</span></td></tr><tr><td style="width: 50.0000%;"><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif;"><strong><span style="font-size: 18px;">Solution</span></strong></span></div></td><td style="width: 50.0000%;"><span style="font-family: Arial, Helvetica, sans-serif;">Re-connect the sensor <strong>OR</strong> Replace the sensor</span></td></tr></tbody></table><p><br></p><h2 id="pp05-or-pp5---ambient-temperature-sensor-failure"><u>PP05</u> or <u>PP5</u> - Ambient Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.0000%;"><div data-empty="true" style="text-align: center;"><span style="font-size: 18px;"><strong>Problem</strong></span></div></td><td style="width: 50.0000%;"><span style="font-family: Arial, Helvetica, sans-serif;">Check the connection of the ambient temperature sensor <strong>OR</strong> Check if the sensor is broken</span></td></tr><tr><td style="width: 50.0000%;"><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif;"><strong><span style="font-size: 18px;">Solution</span></strong></span></div></td><td style="width: 50.0000%;"><span style="font-family: Arial, Helvetica, sans-serif;">Re-connect the sensor <strong>OR</strong> Replace the sensor</span></td></tr></tbody></table><p><br></p><h2 id="pp06-or-pp6---protection-for-overbig-temperature-difference-between-water-inlet--outlet"><u>PP06</u> or <u>PP6</u> - Protection for Over/Big Temperature Difference Between Water Inlet &amp; Outlet</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><span style="font-family: Arial, Helvetica, sans-serif;"><strong>1:</strong> Check if the high-pressure switch is broken<strong>*</strong><br><strong>2:</strong> Check if there is a blockage in water circuit <strong>OR</strong> water flow is not enough</span><span style="font-family: Arial,Helvetica,sans-serif;"><br></span><span style="font-family: Arial, Helvetica, sans-serif;"><strong>3:</strong> Check if there is blockage in refrigerant circuit*</span></td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><span style="font-family: Arial, Helvetica, sans-serif;"><strong><span style="font-size: 18px;">Solution</span></strong></span></div></td><td style="width: 50.0000%;"><span style="font-family: Arial, Helvetica, sans-serif;"><strong>1:&#xA0;</strong> Remove the jam</span><span style="font-family: Arial,Helvetica,sans-serif;"><br></span><span style="font-family: Arial, Helvetica, sans-serif;"><strong>2:&#xA0;</strong>Increase the water flow volume</span><span style="font-family: Arial,Helvetica,sans-serif;"><br></span><span style="font-family: Arial, Helvetica, sans-serif;"><strong>3:&#xA0;</strong>Repair or replace the water pump/Pressure Switch</span></td></tr></tbody></table><p><br></p><h2 id="pp07-or-pp7---anti-freeze-protection-for-coolingwinter-anti-freeze-protection"><u>PP07</u> or <u>PP7</u> - Anti-Freeze Protection for Cooling/Winter Anti-Freeze Protection</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><span style="font-family: Arial,Helvetica,sans-serif;">Refer to PP06 <strong>OR</strong> No action needed</span></td></tr><tr><td style="width: 50.0000%;"><div style="text-align: center;"><span style="font-size: 18px; font-family: Arial, Helvetica, sans-serif;"><strong>Solution</strong></span></div></td><td style="width: 50.0000%;"><span style="font-family: Arial,Helvetica,sans-serif;">No action needed</span></td></tr></tbody></table><p><br></p><h2 id="ee01-or-ee1---high-pressure-protection"><u>EE01</u> or <u>EE1</u> - High Pressure Protection</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.0000%;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td><span style="font-family: Arial,Helvetica,sans-serif;"><strong>1:&#xA0;</strong>Check if high pressure switch is broken<br><strong>2:</strong> Check if there is a blockage in the water<br><strong>3:</strong> Check if there is a blockage in refrigerant circuit*</span></td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><span style="font-family: Arial,Helvetica,sans-serif;"><strong><span style="font-size: 18px;">Solution</span></strong></span></div></td><td style="width: 50.0000%;"><span style="font-family: Arial,Helvetica,sans-serif;"><strong>1:&#xA0;</strong>Replace high pressure switch*<br><strong>2:&#xA0;</strong>Remove the blockage or increase water flow<br><strong>3:</strong> Send heat pump to dealer for detailed check</span></td></tr></tbody></table><p><br></p><h2 id="ee03-or-ee3---water-flow-switch-failure"><u>EE03</u> or <u>EE3</u> - Water Flow Switch Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle; text-align: left;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50%; text-align: left;"><span style="font-family: Arial,Helvetica,sans-serif;"><strong>1:</strong> Check if wiring connection of flow switch is in correct position, with arrow facing the exit of the outlet<br><strong>2:</strong> Check if there is enough water flow<br><strong>3:&#xA0;</strong>Check if water flow switch is broken<br><strong>4:</strong> Check if water pump failed or is off</span></td></tr><tr><td style="width: 50%; vertical-align: middle; text-align: left;"><div style="text-align: center;"><span style="font-family: Arial,Helvetica,sans-serif;"><strong><span style="font-size: 18px;">Solution</span></strong></span></div></td><td style="width: 50%; text-align: left;"><span style="font-family: Arial,Helvetica,sans-serif;"><strong>1:</strong> Reconnect the wiring<br><strong>2:</strong> Increase the water flow<br><strong>3:&#xA0;</strong>Replace the flow switch<br><strong>4:</strong> Repair or replace the water pump</span></td></tr></tbody></table><p><br></p><h2 id="ee04-or-ee4---order-of-phases-incorrect"><u>EE04</u> or <u>EE4</u> - Order of Phases Incorrect</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.0000%;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><span style="font-family: Arial,Helvetica,sans-serif;">Order of phases incorrect</span></td></tr><tr><td style="width: 50.0000%;"><div style="text-align: center;"><span style="font-size: 18px; font-family: Arial, Helvetica, sans-serif;"><strong>Solution</strong></span></div></td><td style="width: 50.0000%;"><span style="font-family: Arial,Helvetica,sans-serif;">Re-connect the phases in correct order</span></td></tr></tbody></table><p><br></p><h2 id="ee05-or-ee5---failure-of-overbig-temperature-difference-between-water-inlet--outlet"><u>EE05</u> or <u>EE5</u> - Failure of Over/Big Temperature Difference Between Water Inlet &amp; Outlet</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.0000%;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><span style="font-family: Arial,Helvetica,sans-serif;"><strong>1:</strong> Check if there is enough water flow volume<br><strong>2:</strong> Check if inlet/outlet water temperature sensor failed</span></td></tr><tr><td style="width: 50.0000%;"><div style="text-align: center;"><span style="font-family: Arial,Helvetica,sans-serif;"><strong><span style="font-size: 18px;">Solution</span></strong></span></div></td><td style="width: 50.0000%;"><span style="font-family: Arial,Helvetica,sans-serif;"><strong>1:</strong> Increase water flow<br><strong>2:</strong> Replace inlet/outlet water temperature sensor(s)</span></td></tr></tbody></table><p><br></p><h2 id="ee06-or-ee6---low-pressure-protection"><u>EE06</u> or <u>EE6</u> - Low Pressure Protection</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.0000%;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Check if low pressure switch is broken<br><strong>2:</strong> Check if refrigerant level is low*<br><strong>3:</strong> Ambient temperature(outside temp.) and water inlet temperature is too low</td></tr><tr><td style="width: 50.0000%;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Replace low pressure switch<br><strong>2:&#xA0;</strong>Fill up with enough refrigerant*<br><strong>3:</strong> Decrease Water Flow<br><strong>4:&#xA0;</strong>Send heat pump to dealer for detailed check</td></tr></tbody></table><p><br></p><h2 id="ee08-or-ee8---communication-failure"><u>EE08</u> or <u>EE8</u> - Communication Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.0000%;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Check the connection(s)</td></tr><tr><td style="width: 50.0000%;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;">Re-connect the connection wire(s)</td></tr></tbody></table><p><br></p><p><br></p><hr><p id="isPasted" style="text-align: left;"><strong><span style="color: rgb(209, 72, 65);">WARNING</span></strong></p><p style="text-align: left;"><span style="font-size: 14px;"><strong>It is strongly advised that customers or non-HVAC certified technicians do not attempt any repairs on the refrigerant coil system or attempt to refill the refrigerant (such as Freon) in the heat pump. These systems require precise amounts of refrigerant, and improper handling can lead to significant damage to the internal components, void warranties, and pose safety risks. Always seek professional assistance from a certified HVAC technician for any refrigerant-related issues or repairs.</strong></span><strong>&#xA0;</strong></p>

FH120, FH220, FH255, FH055 Error Codes

<h2 id="pl---water-flow-switch-failure">PL - Water Flow Switch Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.7163%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 49.2837%;"><strong>1:&#xA0;</strong>Insufficient water flow<br><strong>2:&#xA0;</strong>Plumbing connected backwards<br><strong>3:</strong> Flow switch failure<br><strong>4:</strong> Motherboard failure</td></tr><tr><td style="width: 50.7163%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 49.2837%;"><strong>1:</strong> Make sure the water is circulating back to pool<br><strong>2:</strong> Check the plumbing lines<br><strong>3:</strong> Make sure the water IN from the filter is connected to the bottom port</td></tr></tbody></table><p><br></p><h2 id="pc---level-1--level-2-anti-freeze-protection-in">PC - Level 1 &amp; Level 2 Anti-Freeze Protection In</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">The air temperature is too low and unit is on standby</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;">Wait for outside air temperature to increase</td></tr></tbody></table><p><br></p><h2 id="p1---coil-temperature-sensor-failure">P1 - Coil Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td>Software crash <strong>OR&#xA0;</strong>Sensor failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><span style="font-size: 18px;"><strong>Solution</strong></span></div></td><td><strong>1:&#xA0;</strong>Turn the heater off directly at the breaker for 45 seconds and restart the unit<br><strong>2:&#xA0;</strong>Replace the sensor</td></tr></tbody></table><p><br></p><h2 id="p2---compressor-exhaust-temperature-failure">P2 - Compressor Exhaust Temperature Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Software crash <strong>OR&#xA0;</strong>Sensor failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Turn off the heater directly at the breaker for 45 seconds and restart the unit<br><strong>2:</strong> Replace the sensor</td></tr></tbody></table><p><br></p><h2 id="p3---inlet-water-temperature-sensor-failure">P3 - Inlet Water Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.289%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 49.711%;">Software crash <strong>OR</strong> Sensor failure <strong>OR</strong> Open circuit</td></tr><tr><td style="width: 50.289%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 49.711%;"><strong>1:</strong> Turn off the heater directly at the breaker for 45 seconds and restart the unit<br><strong>2:</strong> Check the wire and connection<br><strong>3:</strong> Replace the sensor<br><strong>4:</strong> Replace the motherboard</td></tr></tbody></table><p><br></p><h2 id="p4---outlet-water-temperature-sensor-failure">P4 - Outlet Water Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Software crash <strong>OR</strong> Sensor failure <strong>OR</strong> Open circuit</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Turn off the heater directly at the breaker for 45 seconds and restart the unit<br><strong>2:</strong> Check the wire and connection<br><strong>3:</strong> Replace the sensor<br><strong>4:</strong> Replace the motherboard</td></tr></tbody></table><p><br></p><h2 id="p6---excessive-temperature-difference-for-in-and-out-sensors">P6 - Excessive Temperature Difference for IN and OUT Sensors</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Low water flow<br><strong>2:</strong> Motherboard failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Check water circulation<br><strong>2:</strong> Check water temperature<br><strong>3:&#xA0;</strong>Replace the motherboard</td></tr></tbody></table><p><br></p><h2 id="p7---ambient-temperature-sensor-failure">P7 - Ambient Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Software crash<strong>&#xA0;OR&#xA0;</strong>Sensor failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Turn off the heater directly at the breaker for 45 seconds and restart the unit.<br><strong>2:</strong> Replace the sensor</td></tr></tbody></table><p><br></p><h2 id="p8---excessively-low-outlet-water-temperature-in-cooling-mode"><strong>P8</strong> - Excessively Low Outlet Water Temperature in Cooling Mode</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Low water flow rate<br><strong>2:&#xA0;</strong>Water inlet water temperature too low<br><strong>3:&#xA0;</strong>Motherboard failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Turn off the heater directly at the breaker for 45 seconds and restart the unit<br><strong>2:</strong> Check the water flow through the heater<br><strong>3:</strong> Adjust the set temperature to a higher level<br><strong>4:</strong> Replace the motherboard</td></tr></tbody></table><p><br></p><h2 id="p9---low-freon-pressure"><strong>P9</strong> - Low Freon Pressure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Low refrigerant<br><strong>2:&#xA0;</strong>Capillary block<br><strong>3:&#xA0;</strong>Pressure switch connections need to be checked<br><strong>4:&#xA0;</strong>Pressure switch failure<br><strong>5:</strong> Motherboard failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Add refrigerant*<br><strong>2:</strong> Replace the capillary*<br><strong>3:&#xA0;</strong>Repair the switch wires<br><strong>4:</strong> Replace the pressure switch*<br><strong>5:&#xA0;</strong>Replace the motherboard</td></tr></tbody></table><p><br></p><h2 id="e2---excessive-temperature-difference-for-in-and-out-sensors"><strong>E2</strong> - Excessive Temperature Difference for IN and OUT Sensors</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Low water flow rate<br><strong>2:</strong> Inlet water temperature is too low<br><strong>3:&#xA0;</strong>Motherboard failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Check water circulation<br><strong>2:</strong> Check water temperature<br><strong>3:</strong> Replace the motherboard</td></tr></tbody></table><p><br></p><h2 id="e3---excessively-high-compressor-temperatures"><strong>E3</strong> - Excessively High Compressor Temperatures</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Low water flow rate<br><strong>2:&#xA0;</strong>Low refrigerant<br><strong>3:&#xA0;</strong>Water temperature is set too high<br><strong>4:&#xA0;</strong>Pressure switch wiring failure<br><strong>5:</strong> Pressure switch failure<br><strong>6:&#xA0;</strong>Motherboard failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Check pool&apos;s water circulation<br><strong>2:&#xA0;</strong>If using a bypass valve, increase the flow to the heater<br><strong>3:</strong> Drain and recharge the refrigerant**<br><strong>4:</strong> Reduce desired temperature setting<br><strong>5:</strong> Check the wiring of the switch<br><strong>6:</strong> Replace the pressure switch*<br><strong>7:</strong> Replace the motherboard</td></tr></tbody></table><p><br></p><h2 id="e4---high-freon-pressure"><strong>E4</strong> - High Freon Pressure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Low water flow rate<br><strong>2:</strong> Overcharged refrigerant<br><strong>3:</strong> Water temperature is set too high<br><strong id="isPasted">4:&#xA0;</strong>Pressure switch wiring failure<br><strong>5:</strong> Pressure switch failure<br><strong>6:&#xA0;</strong>Motherboard failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong id="isPasted">1:&#xA0;</strong>Check pool&apos;s water circulation<br><strong>2:&#xA0;</strong>If using a bypass valve, increase the flow to the heater<br><strong>3:</strong> Drain and recharge the refrigerant**<br><strong>4:</strong> Reduce desired temperature setting<br><strong>5:</strong> Check the wiring of the switch<br><strong>6:</strong> Replace the pressure switch*<br><strong>7:</strong> Replace the motherboard</td></tr></tbody></table><p><br></p><h2 id="e5---cooling-coil-temperature-sensor-failure">E5 - Cooling Coil Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Software crash <strong>OR&#xA0;</strong>Sensor failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Turn the heater off directly at the breaker for 45 seconds and restart the unit<br><strong>2:</strong> Replace the sensor</td></tr></tbody></table><p><br></p><h2 id="e6---suction-temperature-sensor-failure">E6 - Suction Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Software crash <strong>OR&#xA0;</strong>Sensor failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong id="isPasted">1:&#xA0;</strong>Turn the heater off directly at the breaker for 45 seconds and restart the unit<br><strong>2:</strong> Replace the sensor</td></tr></tbody></table><p><br></p><h2 id="e8---communication-failure">E8 - Communication Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; text-align: center; vertical-align: middle;"><span style="font-size: 18px;"><strong>Problem</strong></span></td><td style="width: 50.0000%;"><strong id="isPasted">1:&#xA0;</strong>Digital controller failure<br><strong>2:</strong> Communication line is disconnected, damaged, or unplugged from the motherboard<br><strong>3:</strong> Motherboard failure<br></td></tr><tr><td style="width: 50%; text-align: center; vertical-align: middle;"><span style="font-size: 18px;"><strong>Solution</strong></span></td><td style="width: 50.0000%;"><strong id="isPasted">1:&#xA0;</strong>Replace the digital controller<br><strong>2:</strong> Repair, re-install, or replace the plug wire<br><strong>3:</strong> Replace the motherboard<br></td></tr></tbody></table><p><br></p><p><br></p><hr><p id="isPasted" style="text-align: left;"><strong><span style="color: rgb(209, 72, 65);">WARNING</span></strong></p><p style="text-align: left;"><span style="font-size: 14px;"><strong>It is strongly advised that customers or non-HVAC certified technicians do not attempt any repairs on the refrigerant coil system or attempt to refill the refrigerant (such as Freon) in the heat pump. These systems require precise amounts of refrigerant, and improper handling can lead to significant damage to the internal components, void warranties, and pose safety risks. Always seek professional assistance from a certified HVAC technician for any refrigerant-related issues or repairs.</strong></span><strong>&#xA0;</strong></p>

FH135, FH270 Error Codes

<h2 style="text-align: left;" id="water-flow-protection"><u><strong><span style="font-size: 24px;"><img src="https://attachments.gorgias.help/VR1W92R1ga6M8yBk/hc/dY4gQxz8DZ2Wnv8l/2024080614-19cc09e7-0e8e-48b7-a28c-cb6b3e09a917-58aaf8c6-a60b-4895-b20d-82d9fe7155c6.png" style="width: 54px;" class="fr-fic fr-dii fr-fil"></span></strong></u>Water Flow Protection</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Insufficient water flow<br><strong>2:&#xA0;</strong>Water flow switch disconnected<br><strong>3:</strong> Water flow switch defective</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Ensure the water connections are in the correct order<br><strong>2:&#xA0;</strong>Ensure filter/pool pump is operating properly<br><strong>3:&#xA0;</strong>Ensure all valves are open<br><strong>4:&#xA0;</strong>Check the wiring and reconnect water flow switch<br><strong>5:&#xA0;</strong>Replace flow switch</td></tr></tbody></table><p><br></p><h2 id="e04---anti-freeze-protection">E04 - Anti-freeze Protection</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td>Ambient<strong>&#xA0;</strong><strong>/&#xA0;</strong>inlet water temperature is too low</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;">Wait for the ambient<strong>&#xA0;/</strong> inlet water temperature to increase</td></tr></tbody></table><p><br></p><h2 id="e05---high-pressure-protection">E05 - High Pressure Protection</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Insufficient water flow<br><strong>2:</strong> Ambient<strong>&#xA0;/&#xA0;</strong>water temperature is too high<br><strong>3:</strong> Fan motor speed is abnormal&#xA0;<strong>OR&#xA0;</strong>fan motor is damaged<br><strong>4:&#xA0;</strong>Excess refrigerant gas<br><strong>5:&#xA0;</strong>High pressure switch is disconnected or defective<br><strong>6:</strong> Plumbing is clogged or jammed</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td><strong>1:</strong> Ensure that water connections are in the correct order.<br><strong>2:</strong> Ensure pool filter&#xA0;<strong>/</strong> pump is operating properly<br><strong>3:</strong> Ensure all valves are open<br><strong>4:</strong> Wait for the ambient<strong>&#xA0;/&#xA0;</strong>inlet water temperature to decrease<br><strong>5:</strong> Inspect fan motor, replace if necessary<br><strong>6:&#xA0;</strong>Drain excess refrigerant<strong>*</strong><br><strong>7:&#xA0;</strong>Reconnect or replace high pressure switch<strong>*</strong><br><strong>8:&#xA0;</strong>Verify all plumbing is clear of obstructions and flowing properly</td></tr></tbody></table><p><br></p><h2 id="e06---low-pressure-protection">E06 - Low Pressure Protection</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Bad ventilation<br><strong>2:&#xA0;</strong>Low pressure switch disconnected or defective<br><strong>3:&#xA0;</strong>Gas leakage<br><strong>4:&#xA0;</strong>Fan motor speed is abnormal or fan motor is damaged<br><strong>5:&#xA0;</strong>EEV blocked <strong>OR</strong> piping system jammed</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Ensure the heat pump has sufficient clearance and adequate airflow<br><strong>2:&#xA0;</strong>Clean the evaporator fins.<br><strong>3:&#xA0;</strong>Verify the fan is running correctly<br><strong>4:&#xA0;</strong>Reconnect or replace low pressure switch<strong>*</strong><br><strong>5:&#xA0;</strong>Verify that the pressure is within acceptable range. Repair leaks<strong>*</strong><br><strong>6:&#xA0;</strong>Inspect fan motor, replace if necessary<br><strong>7:&#xA0;</strong>Verify all plumbing is clear of obstructions and flowing properly</td></tr></tbody></table><p><br></p><h2 id="e09---connection-failure-between-motherboard--controller">E09 - Connection Failure Between Motherboard &amp; Controller</h2><table style="width: 100%;"><tbody><tr><td style="width: 50.0000%;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Bad wire connection<br><strong>2:&#xA0;</strong>Defective controller<br><strong>3:&#xA0;</strong>Defective motherboard</td></tr><tr><td style="width: 50.0000%;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Check the wire between the motherboard and controller<br><strong>2:&#xA0;</strong>Replace controller<br><strong>3:&#xA0;</strong>Replace motherboard</td></tr></tbody></table><p><br></p><h2 id="e10---communication-failure-between-motherboard--driver-module">E10 - Communication Failure Between Motherboard &amp; Driver Module</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Bad wire connection<br><strong>2:&#xA0;</strong>Defective motherboard<br><strong>3:&#xA0;</strong>Defective driver module</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Check the wire between the motherboard and controller<br><strong>2:</strong> Replace motherboard<br><strong>3:&#xA0;</strong>Replace driver module</td></tr></tbody></table><p><br></p><h2 id="e12---excessively-high-exhaust-temperature">E12 - Excessively High Exhaust Temperature</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Insufficient water flow<br><strong>2:&#xA0;</strong>Low refrigerant<br><strong>3:</strong> Plumbing is clogged or jammed<br><strong>4:</strong> Defective exhaust temperature sensor</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td><strong>1:</strong> Ensure that water connections are in correct order<br><strong>2:</strong> Ensure that the pool is operating properly<br><strong>3:</strong> Ensure all valves are open<br><strong>4:</strong> Check gauge for pressure<br><strong>5:</strong> Verify all plumbing is clear of obstructions and flowing properly<br><strong>6:&#xA0;</strong>Replace sensor</td></tr></tbody></table><p><br></p><h2 id="e15---inlet-water-temperature-sensor-failure">E15 - Inlet Water Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Sensor disconnected <strong>OR</strong> Defective</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;">Reconnect <strong>OR&#xA0;</strong>Replace sensor</td></tr></tbody></table><p><br></p><h2 id="e16---outer-piping-temperature-sensor-failure">E16 - Outer Piping Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Sensor disconnected <strong>OR&#xA0;</strong>Defective</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;">Reconnect <strong>OR&#xA0;</strong>Replace sensor</td></tr></tbody></table><p><br></p><h2 id="e18---exhaust-temperature-sensor-failure">E18 - Exhaust Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Sensor disconnected <strong>OR&#xA0;</strong>Defective</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;">Reconnect <strong>OR</strong><strong>&#xA0;</strong>Replace Sensor</td></tr></tbody></table><p><br></p><h2 id="e20---inverter-module-abnormal-protection">E20 - Inverter Module Abnormal Protection</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50%; background-color: rgb(226, 80, 65);"><div style="text-align: center;"><strong>N/A</strong></div></td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>Verify all incoming voltage and major electrical components</strong></td></tr></tbody></table><p><strong><br></strong></p><h2 id="e21---ambient-temperature-sensor-failure">E21 - Ambient Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>Sensor disconnected OR&#xA0;Defective</strong></td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>Reconnect OR&#xA0;Replace Sensor</strong></td></tr></tbody></table><p><strong><br></strong></p><h2 id="e23---overcooling-protection-in-cooling-mode">E23 - Overcooling Protection in Cooling Mode</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Insufficient water flow<br><strong>2:&#xA0;</strong>Outlet water temperature sensor failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Ensure that water connections are in correct order<br><strong>2:&#xA0;</strong>Ensure that the pool&#xA0;<strong>/</strong> filter pump is operating properly<br><strong>3:</strong> Ensure all necessary valves are open<br><strong>4:&#xA0;</strong>Replace sensor</td></tr></tbody></table><p><br></p><h2 id="e27---outlet-water-temperature-sensor-failure">E27 - Outlet Water Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Sensor disconnected <strong>OR</strong><strong>&#xA0;</strong>Defective</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;">Reconnect <strong>OR&#xA0;</strong>Replace sensor</td></tr></tbody></table><p><br></p><h2 id="e29---suction-temperature-sensor-failure">E29 - Suction Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Sensor disconnected <strong>OR&#xA0;</strong>Defective</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;">Reconnect <strong>OR&#xA0;</strong>Replace sensor</td></tr></tbody></table><p><br></p><h2 id="e32---overheating-protection-in-heating-mode">E32 - Overheating Protection in Heating Mode</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Insufficient water flow<br><strong>2:&#xA0;</strong>Outlet water temperature sensor failure</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td><strong>1:&#xA0;</strong>Ensure that water connections are in correct order<br><strong>2:</strong> Ensure that the pool&#xA0;<strong>/&#xA0;</strong>filter pump is operating properly<br><strong>3:</strong> Ensure all necessary valves are open<br><strong>4:</strong> Replace sensor</td></tr></tbody></table><p><br></p><h2 id="e33---piping-temperature-too-high-protection-under-cooling-mode">E33 - Piping Temperature Too High, Protection Under Cooling Mode</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Ambient<strong>&#xA0;/&#xA0;</strong>water temperature is too high in cooling mode<br><strong>2:&#xA0;</strong>Refrigerant system anomaly</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td><strong>1:&#xA0;</strong>Verify unit temperature limits<br><strong>2:&#xA0;</strong>Check refrigerant lines<strong>*</strong></td></tr></tbody></table><p><br></p><h2 id="e42---inner-piping-temperature-sensor-failure">E42 - Inner Piping Temperature Sensor Failure</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;">Sensor disconnected <strong>OR</strong> Defective</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;">Reconnect <strong>OR&#xA0;</strong>Replace sensor</td></tr></tbody></table><p><br></p><h2 id="e46---dc-fan-motor-malfunction">E46 - DC Fan Motor Malfunction</h2><table style="width: 100%;"><tbody><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Problem</span></strong></div></td><td style="width: 50.0000%;"><strong>1:</strong> Bad wire connection<br><strong>2:</strong> Fan motor defective</td></tr><tr><td style="width: 50%; vertical-align: middle;"><div style="text-align: center;"><strong><span style="font-size: 18px;">Solution</span></strong></div></td><td style="width: 50.0000%;"><strong>1:&#xA0;</strong>Check fan motor wiring<br><strong>2:&#xA0;</strong>Replace fan motor</td></tr></tbody></table><p><br></p><p><u><br></u></p><hr><p id="isPasted" style="text-align: left;"><strong><span style="color: rgb(209, 72, 65);">WARNING</span></strong></p><p style="text-align: left;"><span style="font-size: 14px;"><strong>It is strongly advised that customers or non-HVAC certified technicians do not attempt any repairs on the refrigerant coil system or attempt to refill the refrigerant (such as Freon) in the heat pump. These systems require precise amounts of refrigerant, and improper handling can lead to significant damage to the internal components, void warranties, and pose safety risks. Always seek professional assistance from a certified HVAC technician for any refrigerant-related issues or repairs.</strong></span><strong>&#xA0;</strong></p>

Error Codes

FH120, FH220, FH255, FH055 Error Codes

FH135, FH270 Error Codes

FH235-i, FH285-i Error Codes