®
Heat Pump Installation and User’s Guide
HIGH REFRIGAlarm: Refrigerant high
pressure switch is open.
1. Water circulation pump not on.
2. Insufficient water flow.
Verify filter and skimmers are clean, backwash if necessary.
Minimumflow 30 GPM[113.6 LPM].
3. External bypass open.
Verify external water bypass around heat pump is closed. Also
make sure all other valves are open or in the proper positions
to allow proper water flowthrough heat pump.
4. Bad refrigerant high pressure switch. Check resistance of switch, if open, replace switch.
5. TXV Stuck Closed.
1.
Disconnect TXV bulb fromsuction line (SL), have it in
your hand, if pressures go back to normal, then reinstall
the bulb on suction line (it may have some debris stuck in
the port). For adjustable TXVs open adjustable valve, it
may remove the debris and set it back to original position.
2.
If (1) does not work, recover the charge, remove bulb from
SL, unscrewTXV head, shake it, if rattles, replace head (PN
KT-45-ZGA), if not, replace TXV and filter dryer and charge
appropriately.
6. Other Possibilities:
Check Water level in pool. This condition may appear if the
heat pump has NOT been operated for an extended period.
To Clear this condition, cycle the heat pump on and off up to 3
times. If this does not correct problem, call for service.
7. Other Possibilities. Low or restricted
water flowthrough heater. Dirty or worn
filters or clogged lint traps. Clogged filter
pump impeller. Improper plumbing valve
settings. Suction leak allowing air into the
water flow. Low water flow when switched
to spa mode. Unit is plumbed backwards.
Heat exchanger clogged with debris.
Internal bypass valve damaged or clogged
with debris.
Clean entire filtering systemand or replace filter element.
Inspect & clean pump impeller. Adjust all plumbing valves.
Repair suction air leaks, grease pump lid O-ring. Replace filter.
Wrong filter pump pipe size. Automatic pool vacuumcausing
restriction. Call your dealer or factory for advice if above
not solve the problem.
8. Unit overcharged.
Reclaimcharge. Recharge with appropriate nameplate
LOWREFRIGAlarm: Refrigerant low
pressure switch is open.
1. Low refrigerant in system.
Find source of refrigerant leak and fix. Pull vacuumand
recharge.
2. Air and water temperatures too cold to
operate the heat pump.
Wait until temperatures warmup and see if unit operates.
3. Bad refrigerant lowpressure switch.
Check resistance of switch with a full charge, if open, replace
4. Faulty fan.
Check the capacitor and fan motor. Replace either one if it is
faulty. Check the fan blade and make sure it is not slipping or
broken. If so, replace the fan.
5.
TXV Stuck Closed.
6.
Insufficient airflowthrough air coil
1.
Disconnect TXV bulb fromsuction line (SL), have it in
your hand, if pressures go back to normal, then reinstall
the bulb on suction line (it may have some debris stuck in
the port). For adjustable TXVs open adjustable valve, it
may remove the debris and set it back to original position.
2.
If (1) does not work, recover the charge, remove bulb from
SL, unscrewTXV head, shake it, if rattles, replace head (PN
KT-45-ZGA), if not, replace TXV and filter dryer and charge
appropriately.
Remove surrounding debris or shrubs or heat pump
maintenance by qualified personnel.
FIVEALARMS: Indicates 5 faults have oc-
curred in 1 hour. This fault will automatically
reset in one hour or can be manually reset
pressing the ON/OFF button.
5 alarms of any kind within one hour.
Press the ON/OFF button to clear the alarm. Check Heat
Pump over the next few minutes/hours to see if alarmappears
again. This alarmmost likely caused the five alarms in one
hour.
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