Diagnostic Chart - Whirlpool Gold WGFM195 Installation Instructions Manual

Gold gas-fired warm air furnace
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Goodman 118 Long
To avoid personal injury or death due to electrical shock, disconnect electrical power
before performing any service or maintenance.
The dual 7-segment LED display will display an error code that may contain a letter and number. The error code may be used to assist
in troubleshooting the unit.
Symptoms of
Abnormal
Associated
Operation
LED Code Fault Description Possible Causes
Furnace fails to
None
operate.
Integrated
control module
diagnostic LED
display
provides no
signal.
LED display is
Continuous
steady on.
On
Furnace fails to
1 flash
operate.
Integrated
control module
diagnostic LED
is flashing
1 flash.

Diagnostic Chart

WARNING
HIGH VOLTAGE!
No 115-volt
Manual disconnect
power to
switch Off, door switch
furnace, or no
open or 24-volt wire
24-volt power to
improperly connected or
integrated
loose.
control module.
Blown fuse or circuit
Blown fuse or
breaker.
circuit breaker.
Integrated control
Internal fault in
module has an internal
Integrated
fault.
control module.
Normal
Normal operation.
operation.
Furnace lockout
Failure to establish
due to an
flame. No gas to
excessive
burners, front cover
number of
pressure switch stuck
ignition "retries"
open, bad igniter or
(3 total).
igniter alignment,
improper orifices or
coated/oxidized or
improperly connected
flame sensor.
Loss of flame after
establishment.
Interrupted gas supply,
lazy burner flames
(improper gas pressure
or restriction in flue and/
or combustion air
piping), front cover
pressure switch
opening, or improper
induced draft blower
performance.
Corrective Actions
Assure 115-volt power
to the furnace, and
24-volt power to
integrated control
module.
Check integrated
control module fuse.
Replace with 3A
automotive fuse, if
necessary.
Check for possible
shorts in 115-volt and
24-volt circuits. Repair
as necessary.
Replace bad
integrated control
module.
None.
Locate and correct gas
interruption.
Check front cover
pressure switch
operation (hose,
wiring, contact
operation). Correct if
necessary.
Replace or realign
igniter. Igniter is fragile,
handle gently.
Check flame sense
signal. Sand sensor if
coated and/or
oxidized.
Check flue piping for
blockage, proper
length, elbows and
termination.
Verify proper induced
draft blower
performance.
Notes and
Cautions
Turn off power
prior to repair.
Replace
integrated control
module fuse with
3A automotive
fuse.
Read precautions
in "Electrostatic
Discharge (ESD)
Precautions"
section of
manual.
Replace
integrated control
module with
current
replacement
parts.
Normal operation.
Turn off power
prior to repair.
Igniter is fragile,
handle with care.
Sand flame
sensor with
emery cloth.
See "Vent/Flue
Pipe" section for
piping details.
43

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