Issues and Resolutions

DANGER

Failure to heed the following will result in injury or death.

RISK OF ELECTRICAL SHOCK FROM ENERGY STORED IN CAPACITORS - MODELS EQUIPPED WITH VARIABLE FREQUENCY COMPRESSOR DRIVES STORE ELECTRICITY EVEN AFTER THE POWER HAS BEEN DEACTIVATED AT THE POWER BREAKER. Wait for 2 minutes after the shut down of equipment before servicing.
Deactivate power while routing wiring to control board.
Follow all National Electric Codes (NEC) and/or State and Local guidelines.

WARNING

Failure to heed the following may result in injury or death.

Repairs must not be attempted by untrained or unqualified individuals.
The heat pump contains refrigerant under pressure. Repairs to the refrigerant circuit must not be attempted by untrained or unqualified individuals. Service must be performed only by qualified HVAC technicians. Recover refrigerant before opening the system.

NOTICE

Failure to heed the following may result in damage to equipment.

Service by unauthorized personnel will void the factory warranty.

Please perform the following troubleshooting.

Blank Display

Display Panel Not Responding

Displays Defrosting

Displays "DEFROSTING"

ISSUE

The heat pump has sensed the coil is icing up. See "Ice Forming on the Heat Pump"

No action is required.

RESOLUTION

Heat Only Units - Passive Defrost

When ice starts to form on the coil, the compressor will stop operating while the fan continues to operate.

The coil will begin to warm to the surrounding air temperature. When the coil's temperature rises above 38° F (3.3° C), the compressor is restarted and heating resumes.
If the coil's temperature remains below 38° F (3.3° C), the compressor will remain off.

Cool Only Units - Passive Defrost

When ice starts to form on the coil, the compressor will stop operating while the fan continues to operate.

The coil will begin to warm to the surrounding air temperature. When the coil's temperature rises above 38° F (3.3° C), the compressor is restarted and cooling resumes.
If the coil's temperature remains below 38° F (3.3° C), the compressor will remain off.

Heat and Cool Units - Active Defrost

Hot refrigerant gas will be sent through the coil to rapidly remove ice or frost.

During this process, the melting of the ice may appear as steam coming off the heat pump. This is normal.

Displays "NO SYSTEM FIRMWARE"

Displays "NO POOL/SPA WATER FLOW"

Displays "SET TO SWITCH REMOTELY"

Displays "SET UNIT MODEL NUMBER"

Heat Pump Not Running

Heat Pump's Tripping Breaker

Heat Pump Won’t Shut Off

Heat Pump Is Running, Not Heating

ISSUE

The heat pump is running. But the water is not heating.

RESOLUTION

If the heat pump is using an external controller, confirm it is set correctly.
- See "Operating Heat Pump (With an External Controller)"
- If the heat pump is still not running correctly with this device, contact the installer of the device or the device’s manufacturer for further assistance.
Confirm heat pump mode is set to heat.
Confirm thermostat is set to the desired water temperature.
Confirm valves are 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).
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° F (4.4° to 5.6° C) colder than the outside ambient air, the heat pump is moving heat into the water.
If an error code is displayed, diagnose and correct cause of code.
- See "Fault Codes"
Confirm that the filter pump has a sufficient run-time. The heat pump will not run (or heat the water) without water flow.
- See "Heating Recommendations"

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, such as an Aqua Blanket^™, can also compensate for excessive heat loss.
- See "Liquid Blankets"

Heat Pump Is Running, Not Cooling

Ice Forming on the Heat Pump

ISSUE

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.

RESOLUTION

Heat Only Units:

The heat pump may develop a fine layer of white frost on the outside coil before entering the defrost mode. This is normal.
- See "Displays Defrosting"
If heavy ice (not frost) starts to build up, shut off the heat pump. Contact the installer or manufacturer.
If the ambient air temperature will be falling below 32° F (0° C) for more than 8 hours, winterize equipment.
- See "Winterizing"

Cool Only Units

The heat pump may enter defrost mode if the water flow rate falls below the acceptable range. See "Water Flow Rates"
If the ambient air temperature will be falling below 32° F (0° C) for more than 8 hours, winterize equipment.
- See "Winterizing"

Heat and Cool Units (with Active Defrost or “Icebreaker”):

During freezing conditions, pool or spa heating will continue. Frost or ice may develop during the “countdown” to the active defrost (up to 50 minutes). This is normal. See "Displays Defrosting"
The heat pump will enter an "active defrost" stage to remove the accumulated frost and ice.
- Be sure to observe the unit for at least 50 minutes. If it has not entered an active defrost cycle, call for service.

TIP:

The heat pump can be manually set to defrost by temporarily switching to the cooling mode until the ice or frost melts.

If the ambient air temperature is (or will be) falling below 32° F (0° C) for more than 8 hours, winterize equipment.
- See "Winterizing"

"Pool / Spa" Button Will Not Work

Water Coming From Heat Pump