Section 8. Troubleshooting
8.1
Troubleshooting Guide
The following table provides symptoms and
solutions for general troubleshooting problems for the
heat pump.
Heat pump will not start, no control board display.
Heat pump will not start, control board display working.
Heat pump runs but does not heat.
Heat pump does not run and control board displays
FAULT-
LOW WATER FLOW
Heat pump does not run and control board display
shows
FAULT-
HIGH REF PRESSURE
Heat pump does not run or short cycles and control
board display shows
FAULT-
LOW REF PRESSURE
Heat pump leaking water.
Table 4.
Heat Pump Troubleshooting Guide
SYMPTOM
CORRECTIVE ACTION
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 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.
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.
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.
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.
Check that fan is operating and air is coming out of the
top of the heat pump, while short cycling. If heat pump
does not run at all, call for service.
Possible heat exchanger or plumbing leak. Turn the
heat pump off, then turn circulating pump off for at least
one hour to see if the water leak stops. If the water leak
stops, normal condensation is occurring. If the water leak
continues, after the heat pump is shut off for at least one
hour, call for service.
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