Two Speed Application (Gpc1560/Gph1642-60); Electric Heat Installation & Adjustment; Maintenance; Service - Goodman H Series Installation Instructions Manual

1. Purge gauge lines. Connect service gauge manifold to access fittings. Run
system at least 10 minutes to allow pressure to stabilize.
2. Temporarily install thermometer on liquid (small) line near liquid line access
fitting with adequate contact and insulate for best possible reading.
3. Check subcooling and superheat. Two stage systems running on low stage with
TXV application should have a subcooling and superheat within the range
listed on the chart.
a. If subcooling and superheat are low, adjust TXV superheat, then check
subcooling.
NOTE: To adjust superheat, turn the valve stem clockwise to increase and
counter clockwise to decrease.
b. If subcooling is low and superheat is high, add charge to raise subcooling
then check superheat.
c. If subcooling and superheat are high, adjust TXV valve superheat, then
check subcooling.
d. If subcooling is high and superheat is low, adjust TXV valve superheat and
remove charge to lower the subcooling.
NOTE: Do NOT adjust the charge based on suction pressure unless there is a
gross undercharge.
4. Disconnect manifold set, installation is complete.
ELECTRIC HEAT INSTALLATION & ADJUSTMENT
This series of electric cooling and heat pump package equipment is designed to
accept a field installed electric heat kit. The unit is equipped to easily install the
HKR/HKP Series Electric Heat Kit. Full Installation Instructions are included in this
kit. Please use this document for guidance in field equipping the package unit
with electric heat.
Choose the heat kit that fits the application for the specific installation.
Permanently mark the unit's nameplate with the model being installed. High and
low voltage connections are detailed in the heat kit
instructions.
Indoor Blower motor speed tap selection may need to be
modified to accommodate normal continuous operation to
prevent a nuisance trip. See tables at right.

MAINTENANCE

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 16) 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
functioning as a condenser. The return air filter must always
GPC15/GPH16(24-60) Models (0 - 0.5 E.S.P.)
Unit Model Number
GPC1524/GPH1624H41**
GPC1530/GPH1630H41**
GPC1536/GPH1636H41**
GPC1542/GPH1642H41**
GPC1548/GPH1648H41**
GPC1648/GPH1660H41**
T1 - Fan Only; T2 - Normal Speed Cooling
T3 - Normal Speed Heating
T4 - High Speed Cooling; T5 - High Speed Heating
GPC15/GPH16(24-60) Models (0 - 0.5 E.S.P.)
Unit Model Number
GPC1524/GPH1624H41**
GPC1530/GPH1630H41**
GPC1536/GPH1636H41**
GPC1542/GPH1642H41**
GPC1548/GPH1648H41**
GPC1560/GPH1660H41**
T1 - Fan Only; T2 - Normal Speed Cooling
T3 - Normal Speed Heating
T4 - High Speed Cooling; T5 - High Speed Heating
12
GPC15
Design superheat @ 95 °F
outdoor ambient temperature
Superheat Subcooling
Model #
± 2°F
GPC1524H41 6 °
GPC1530H41 8°
GPC1536H41 12°
GPC1542H41 7°
GPC1548H41 10°
GPC1560H41 12°
GPH16
Design superheat @ 95 °F
outdoor ambient temperature
Superheat Subcooling
Model #
± 2°F
GPH1624H41 15°
GPH1630H41 15°
GPH1636H41 10°
GPH1642H41 12°
GPH1648H41 15°
GPH1660H41 12°
TABLE 6A & 6B
Electric Heat KW
5 8 10
T3 T3 T3
T3 T3 T3
T3 T3 T3
T3 T3 T3
T3 T3 T3
T3 T3 T3
Electric Heat KW
5 8 10
T5 T5 T5
T5 T5 T5
T5 T5 T5
T5 T5 T5
T5 T5 T5
T5 T5 T5
TABLE 7A & 7B
± 2°F
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12°
± 2°F
7°
7°
13°
13°
15°
12°
15 20
T5 NA
T5 NA
T5 NA
T3 T5
T3 T3
T3 T3
15 20
T5 NA
T5 NA
T5 NA
T5 NA
T5 NA
T5 NA