Whirlpool WGFD293 Installation Instructions Manual page 44

Symptoms of Diagnostic/
Abnormal Staus LED
Operation Code
Furnace fails to None
operate.
Integrated
control module
diagnostic LED
display
provides no
signal.
LED display OP
indicates "OP."
Furnace fails to
operate.
Integrated
control module
LED display
provides "E0"
error code.
Furnace fails to
operate.
Integrated
control module
LED display
provides "E1"
error code.
Fault Description Possible Causes
No 115-volt
power to
furnace, or no
24-volt power to
integrated
control module.
Blown fuse or
circuit breaker.
Internal fault in
Integrated
control module.
Normal
operation
E0 Furnace lockout
due to an
excessive
number of
ignition "retries"
(3 total).
E1 Low-stage
pressure switch
circuit is closed
at start of
heating cycle.
Corrective Actions
Manual disconnect Assure 115-volt power
switch Off, door to the furnace, and 24-
switch open or volt power to
24-volt wire integrated control
improperly module
connected or
Check integrated
loose.
control module fuse.
Blown fuse or Replace with 3A
circuit breaker automotive fuse, if
necessary.
Integrated control
module has an Check for possible
internal fault. shorts in 115-volt and
24-volt circuits. Repair
as necessary.
Replace bad
integrated control
module.
Normal operation None
Failure to establish Locate and correct gas
flame. Cause may interruption.
be no gas to
Check front cover
burners, front cover
pressure switch
pressure switch
operation (hose,
stuck open, bad
wiring, contact
igniter or igniter
operation). Correct if
alignment,
necessary.
improper orifices or
Replace or realign
coated/oxidized or
igniter. Igniter is fragile,
improperly
handle gently.
connected flame
Check flame sense
sensor.
signal. Sand sensor if
Loss of flame after
coated and/or
establishment.
oxidized.
Cause may be
Check flue piping for
interrupted gas
blockage, proper
supply, lazy burner
length, elbows and
flames (improper
termination.
gas pressure or
restriction in flue
Verify proper induced
and/or combustion
draft blower
air piping), front
performance.
cover pressure
switch opening, or
improper induced
draft blower
performance.
Low-stage Replace low-stage
pressure switch pressure switch.
contacts sticking.
Repair short in wiring.
Shorts in pressure
switch circuit
wiring.
Notes and Cautions
Turn off power prior to
repair.
Replace integrated
control module fuse
with 3A automotive
fuse.
Read precautions in
"Electrostatic
Discharge" 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.
Turn off power prior to
repair.
Replace pressure
switch with correct
replacement part.