Goodman GPC1524H41 Installation Instructions Manual Download Page 12

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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:

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

TABLE 7A & 7B

TABLE 6A & 6B

Model #

Superheat

± 2°F

Subcooling

± 2°F

GPC1524H41 6

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GPC1530H41 8°