GPCH3 Installation Manual
13
prevent a nuisance trip. See following table.
5 8 10 15 20
[*PCH/*PHH]32441** T3 T3 T3 NA NA
[*PCH/*PHH]33041** T3 T3 T3 T5 NA
[*PCH/*PHH]33641** T3 T3 T3 T5 NA
[*PCH/*PHH]34241** T3 T3 T3 T5 T5
[*PCH/*PHH]34841** T3 T3 T3 T5 T3
[*PCH/*PHH]36041** T3 T3 T3 T5 T3
*PCH/*PHH3(24-60) Models (0 - 0.5 E.S.P.)
Electric Heat KW
Unit Model Number
5 8 10 15 20
[*PCH/*PHH]32441** T5 T5 T5 T5 NA
[*PCH/*PHH]33041** T5 T5 T5 T5 NA
[*PCH/*PHH]33641** T5 T5 T5 T5 NA
[*PCH/*PHH]34241** T5 T5 T5 T5 NA
[*PCH/*PHH]34841** T5 T5 T5 T5 NA
[*PCH/*PHH]36041** T5 T5 T5 T5 NA
*PCH/*PHH3(24-60) Models (0.5 - 0.8 E.S.P.)
Unit Model Number
Electric Heat KW
T1 - Fan Only, T2 - Normal Speed Cooling
T3 - Normal Speed Heating
T4 - High Speed Cooling, T5 - High Speed Cooling
The Self Contained Package Air Conditioner and Heat
Pump should operate for many years without excessive
service calls if the unit is installed properly. However it is
recommended that the homeowner inspect the unit before
a seasonal start up. The coils should be free of debris so
cleaned or replaced. These few steps will help to keep the
product up time to a maximum. The Troubleshooting Chart
does not operate properly.
QUALIFIED SERVICE AGENCY ONLY: OTHERS SHOULD
NOT ATTEMPT TO SERVICE THIS EQUIPMENT.
Common Causes of Unsatisfactory Operation of Heat Pump
on the Heating Cycle.
When a heat pump is in the heating cycle, the indoor coil is
indoor coil to prevent excessive discharge pressure, and
high pressure cut out.
Do not introduce cold outside air into the return duct of a
heat pump installation. Do not allow air entering the indoor
coil to drop below 65°F. Air below this temperature will cause
low discharge pressure, thus low suction pressure, and
excessive defrost cycling resulting in low heating output. It
may also cause false defrosting.
An undercharged heat pump on the heating cycle will cause
low discharge pressure resulting in low suction pressure
and frost accumulation on the outdoor coil.
The unit’s defrost terminating sensor must make good
thermal contact with the outdoor coil tubing. Poor contact
may not terminate the unit’s defrost cycle quickly enough to
prevent the unit from cutting out on high discharge pressure.
- In order to determine if the
solenoid is energized, touch the nut that holds the
solenoid cover in place with a screwdriver. If the nut
magnetically holds the screwdriver, the solenoid is
energized and the unit is in the cooling cycle.
- Check unit voltage. If
no voltage, check wiring circuit.
- check for leaks;
- Replace valve;
- If it is on the heating
cycle, raise the discharge pressure by restricting
does not shift, tap it lightly on both ends with
a screwdriver handle. Do Not Tap The Valve
the outdoor coil. If the valve does not shift after
the discharge and suction pressure equalize, and
repeat above steps. If the valve does not shift,
replace it.