Whirlpool WGFM29 Installation Instructions Manual page 46

Symptoms of Diagnostic/
Abnormal Status LED
Operation Code
Furnace fails to E9
operate on high
stage. Furnace
operates
normally on low
stage.
Integrated
control module
LED display
provides "E9"
error code.
Furnace fails to EA
operate.
Integrated
control module
LED display
provides "EA"
error code.
Furnace fails to d0
operate.
Integrated
control module
LED display
provides "d0"
error code.
Operation d4
different than
expected or no
operation.
Integrated
control module
LED display
provides "d4"
error code.
46
Fault Description Possible Causes
High-stage Pressure switch
pressure switch hose blocked,
circuit is not pinched or
closed. connected
improperly.
Induced draft
blower is Blocked flue and/or
operating. inlet air pipe,
blocked drain
Furnace is
system or weak
operating on
induced draft
low stage only.
blower.
Incorrect pressure
switch setpoint or
malfunctioning
switch contacts.
Loose or
improperly
connected wiring.
Polarity of 115- Polarity of 115-volt
volt AC is AC power to
reversed. furnace or
integrated module
is reversed.
Poor furnace
ground.
Data not yet on Furnace does not
network. contain any shared
data.
Invalid memory Shared data set on
card data. memory card has
been rejected by
integrated control
module.
Corrective Actions
Inspect pressure
switch hose. Repair, if
necessary.
Inspect flue and/or
inlet air piping for
blockage, proper
length, elbows and
termination. Check
drain system. Correct
as necessary.
Check induced draft
blower performance.
Correct as necessary.
Correct pressure
switch setpoint or
contact motion.
Tighten or correct
wiring connection.
Review wiring diagram
to correct polarity.
Verify proper ground.
Correct if necessary.
Check and correct
wiring.
Populate shared data
set using memory
card.
Verify shared data set
is correct for the
specific model.
Repopulate data using
correct memory card, if
required.
Notes and Cautions
Turn off power prior to
repair.
Replace pressure
switch with correct
replacement part.
Replace induced draft
blower with correct
replacement part.
Turn off power prior to
repair.
Turn off power prior to
repair.
Use memory card for
the specific model.
Insert memory card
before turning on
power. Memory card
may be removed after
data is loaded.
Turn off power before
removing memory
card.
Error code will be
cleared once data is
loaded.
Turn off power prior to
repair.
Use memory card for
the specific model.
Insert memory card
before turning on
power. Memory card
may be removed after
data is loaded.
Turn off power before
removing memory
card.
Error code will be
cleared once data is
loaded.