Goodman AMVC800805CX AA - Page 50

• Furnace f ails to operate.
• Integrated control module LED
display provides
error code.
• Integrated control
module has lost
communications w ith
circulator blow er
motor.
• Loose w iring connection
at circulator motor control
leads.
• Failed circulator blower
motor.
• Failed integrated control
module.
• Furnace f ails to operate.
• Integrated control module LED
display provides
error code.
• Circulator blow er
motor horse power in
shared data set does
not match circulator
blow er motor horse
power.
• Incorrect circulator blow er
motor in furnace.
• Incorrect shared data set
in integrated control module.
• Furnace operates at reduced
performance.
• Airfow delivered is less than
expected.
• Integrated control module LED
display provides
error code.
• Circulator blow er
motor is operating in a
power, temperature,
or speed limiting
condition.
• Blocked filters.
• Restrictive ductw ork.
• Undersiz ed ductw ork.
• High ambient
temperatures.
• Verif y circulator blower if motor
horse power is the same specif ed
for the specif c furnace mo del.
Replace if necessary.
• Verif y shared data set is correct
for the specif c model. Re-populate
data using correct memory card if
required.
• Turn power OFF prior to
repair
• Replace motor w ith correct
replacement part.
• Use memory card for the
specif c mo del
• Insert memo ry card
BEFORE turning pow er ON.
Memo ry card may be
removed after data is loaded
and power is turned off.
• Error code will be cleared
once shared data and mo tor
horse power match.
• Check filters for blockage. Clean
filters or remove obstruction.
• Check ductw ork for blockage.
Remove obstruction. Verify a
ll
registers are fully open.
• Verif y ductwork is appropriately
sized for system. Resize/replace
ductwork if necessary.
• See "III. Product Description" and
"IV. Location Requirements &
Considerations" furnace installation
requirements.
• Turn power OFF prior to
repair.
• Tighten or correct wiring
connection.
• Check circulator blow er motor.
Replace if necessary.
• Check integrated control module.
Replace if necessary.
• Turn power OFF prior to
repair
• Replace circulator mo tor
with correct replacement
part.
• Replace integrated control
module w ith correct
replacement part.
Symptoms of Abnormal
Operation
Diagnostic /
Status LED
Codes
Possible CausesCorrective ActionsNotes & CautionsFault Description
TROUBLESHOOTING
50