Troubleshooting Guide for Jandy Heat Pumps

Jandy-Zodiac Technical Support: 800-822-7933

The following provides symptoms and solutions for general troubleshooting problems for Jandy heat pumps.

SYMPTOM CORRECTIVE ACTION

Heat pump will not start, no control board display. Breaker or fuse may be tripped. Reset breaker or check fuse. If heat pump still does not run, call for service.

Three-phase models only - The phases may be reversed or there may be a loss of phase, call for service.

Heat pump will not start, control board display working.

Heat pump may be in delay count down of 5 minutes.

Make sure control board thermostat is calling for heater to come on (check setting on thermostat and temperature reading).

Make sure heat pump is not in cooling mode.

Heat pump runs but does not heat. Verify cold air is blowing out the top of the heat pump. If

the heat pump has just been installed or if the pool water has been allowed to cool significantly, it is necessary to run the heat pump continually for 24-48 hours.

If the heat pump has been in operation for some time, increase the circulating pump time, or switch the control board to Maintain Heat function.

If heating a spa, verify no air intake stand pipes are open. If heat pump still does not heat, call for service.

Heat pump does not run and control board displays

FAULTLOW

WATER FLOW

Verify circulating pump is on and all necessary valves are in the correct positions.

Verify filter and skimmers are clean.

Check water level in pool.

Temporarily turn off all fountains and water falls that bypass the heat pump water inlet.

If this does not correct the problem, call for service.

Heat pump does not run and control board display shows

FAULT HIGH

REF PRESSURE

Verify circulating pump is on and that there are no water flow restrictions to the heat pump.

Make sure all necessary valves are open or in the proper positions to allow proper water flow to the heat pump.

Verify filter and skimmers are clean. Check for water level in the pool.

This condition may also appear if the heat pump has not been operated for an extended period.

To clear the condition, cycle the heat pump, on and off, up to 3 times.

If this does not correct the problem, call for service.

Heat pump does not run or short cycles and control board display shows

 

FAULTHIGH

REF PRESSURE

When the head pressure builds too high, the high pressure switch will open causing the heat pump to shut off immediately.

The control will sense this fault condition and shut off the compressor until the switch re-closes.

 

FAULTHIGH

WATER TEMP

When the POOL or SPA water temperature heats to the maximum allowed temperature or above, there could be safety risks for anyone in the water.

The water thermostat will read this temperature and the control will shut off the heat pump unless it is in CHILLER mode.

This feature also remains active when the control calls for heat through a remote thermostat.

This is to insure that water temperature does not go to an abnormally high level due to a possible malfunction of the remote sensor.

 

FAULTSHORTED

COIL SENSOR

-or-

FAULTOPEN

COIL SENSOR

In the event that the coil temperature sensor malfunctions or is not connected the control will shut off the heat pump.

FAULTSHORTED

WATER SENSOR

-or-

FAULT OPEN

WATER SENSOR

In the event that the water temperature sensor malfunctions or is not connected the control will shut off the heat pump.