17
Meaning of Display Codes
Service Analyzer Codes
Most problems will be detected by the service analyzer and a code will be
displayed on the digital display of your heater.
Display Meaning of codes
OFF The desired programmed temperature point is lower than 60°F
(15°C).
LP & LP3 Shortage of refrigerant gas in the unit or faulty low pressure
control. The digital display will show LP3 after 3 LP faults and shut
down your pool heater. The pool pump will also be stopped for pro-
tection if the unit’s internal time clock feature is used. If LP or LP3
occurs you should call for service.
HP & HP3
Low water fl ow to the unit or faulty high pressure control. Check wa-
ter fl ow. Backwash fi lter and/or heater. The unit will show HP3 after
3 HP faults. This will stop your heater for protection.
Po Water temperature probe connected to WS on the electronic
board may be disconnected. If it is not, the probe may be open or
defective.
Pc Water temperature probe is short circuited or may be defective.
FLo
Possible causes:
- The fi lter is in backwash position.
- The fi lter pump is stopped.
- The fi lter is dirty.
- Shortage of water to pool pump.
- Water pressure switch must be adjusted or it is broken.
dPo Suction temperature probe connected to DS on the electronic
board may be disconnected. If it is not, the probe may be open or
defective.
dPc
Suction temperature probe is short circuited or may be defective.
FS
Unit currently in defrosting cycle (the fan works but the compressor
is stopped). This is normal operation when outside temperatures
are cold.
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