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Heat Pump Not Running
1. Confirm equipment is receiving power. Is the heat pump display illuminated?
If not, confirm the main breaker (located at the power supply panel) and the disconnect switch (located near the heat
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pump) are both turned on.
Confirm the power switch on the heat pump's display is set to on.
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If the display still does not illuminate, it is recommended that the heat pump installer or electrician confirms heat
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pump is receiving power.
2. Confirm thermostat is set correctly. See "Dial Control Panel".
When heating the water is desired, the thermostat should be set above the current water temperature.
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3. If an error code is displayed, diagnose and correct the cause of the code. See "Fault Codes" on page 24.
4. If the heat pump is using an external controller, the heat pump may not be set correctly at the external
controller.
See "Operating Heat Pump (With an External Controller)".
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Heat Pump's Tripping Breaker
1. Have an electrician confirm breakers are in good condition and properly sized for the heat pump.
2. If a fault occurs immediately when the compressor starts, a qualified technician should evaluate the system.
Heat Pump Won't Shut Off
1. Confirm the heat pump has reached the desired temperature set on the thermostat. The heat pump will continue
to run until the set temperature is reached.
2. If the heat pump is using an external controller, it may not be set correctly.
See "Operating Heat Pump (With an External Controller)".
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Heat Pump Is Running, Not Heating
1. If the heat pump is using an external controller, confirm it is set correctly.
See "Operating Heat Pump (With an External Controller)".
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If the heat pump is still not running correctly with this device, contact the installer of the external controller device
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or the device's manufacturer for further assistance.
3. Confirm thermostat is set to the desired water temperature.
4. Confirm valves are correctly positioned to heat the correct body of water (either the pool or the spa). If heating
a spa that overflows into a pool, confirm the spa is isolated when being heated (not flowing into the pool).
5. Confirm heat pump is transferring heat into the water.
Measure the temperature of air discharge coming out of the heat pump fan. If discharge air is between 8° to 10°
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colder than the outside ambient air, the heat pump is moving heat into the water.
6. If an error code is displayed, diagnose and correct cause of code. See "Fault Codes" on page 24.
7. Confirm that filter pump has a sufficient run-time. The heat pump will not run (or heat the water) without water
flow. Heat Pump equipment will generally be set to run 24 hours a day in commercial applications.See "Initial
Heating Recommendations" on page 21.
8. If heating a spa, deactivate air blower or venturi (if equipped) to allow for quicker heating times. For pools,
deactivate water features, such as slides, waterfalls, or fountains to allow water to retain heat. Use of a liquid
pool blanket product can also compensate for excessive heat loss.
Available Accessories
See
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Ice forming on the heat pump
When conditions are too cold for proper operation, the heat pump will enter a defrost mode. This prevents
ice from building up on the evaporator coil.
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on page 22.for more information on liquid blankets.
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