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| Electric Heat KW |
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Unit Model Number | 5 | 8 | 10 | 15 | 20 |
GPH1324M41** | M(F) | M(F) | M(F) | H | NA |
GPH1330M41** | M(F) | M(F) | M(F) | H | NA |
GPH/GPC1336M41** | M | M | H(F) | H(F) | NA |
GPH1342M41** | M | M | H(F) | H(F) | NA |
GPH/GPC1348M41** | 3(F) | 3(F) | 3(F) | 3(F) | 3(F) |
GPH/GPC1360M41** | 3(F) | 3(F) | 3(F) | 3(F) | 3(F) |
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GPC1336M43** | H(F) | NA | |||
GPC1348M43** | 3(F) | 3(F) | |||
GPC1360M43** | 3(F) | 3(F) | |||
*(F) - Factory Setting
Speed Taps Description: H / 4, 5 - High; M / 2, 3 - Medium; L / 1 - Low
3 speed (H)igh/(M)edium/(L)ow: PSC motor
4 speed (H)igh/(ML)Medium Low/ (MH) Medium High/(L)ow: PSC motor
1/2/3/4/5:
MAINTENANCE
WARNING
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
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 adequate airflow is achieved. The return and supply registers should be free of any obstructions. The filters should be cleaned or replaced. These few steps will help to keep the product up time to a maximum. The Troubleshooting Chart (on page 11) should help in identifying problems if the unit does not operate properly.
SERVICE
THE FOLLOWING INFORMATION IS FOR USE BY QUALIFIED SERVICE AGENCY ONLY: OTHERS SHOULD NOT ATTEMPT TO SERVICE THIS EQUIPMENT.
Common Causes of Unsatisfactory Operation of Heat Pump on the Heating Cycle.
INADEQUATE AIR VOLUME THROUGH INDOOR COIL
When a heat pump is in the heating cycle, the indoor coil is func- tioning as a condenser. The return air filter must always be clean, and sufficient air volume must pass through the indoor coil to prevent excessive discharge pressure, and high pressure cut out.
OUTSIDE AIR INTO RETURN DUCT
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 cy- cling resulting in low heating output. It may also cause false de- frosting.
UNDERCHARGE
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.
POOR “TERMINATING” SENSOR CONTACT
The unit’s defrost terminating sensor must make good thermal contact with the outdoor coil tubing. Poor contact may not termi- nate the unit’s defrost cycle quickly enough to prevent the unit from cutting out on high discharge pressure.
MALFUNCTIONING REVERSING VALVE - THIS MAY BE DUE TO:
1.Solenoid not energized - 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.
2.No voltage at unit’s solenoid - Check unit voltage. If no voltage, check wiring circuit.
3.Valve will not shift:
a.Undercharged - check for leaks;
b.Valve Body Damaged - Replace valve;
c.Unit Properly Charged - If it is on the heating cycle, raise the discharge pressure by restricting airflow through the indoor coil. If the valve does not shift, tap it lightly on both ends with a screwdriver handle. DO NOT TAP THE VALVE BODY. If the unit is on the cooling cycle, raise the discharge pressure by restricting airflow through the outdoor coil. If the valve does not shift after the above attempts, cut the unit off and wait until the discharge and suction pressure equalize, and repeat above steps. If the valve does not shift, replace it.
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