Goodman AVPTC 14 Series Installation & Operating Instructions Manual page 22

27 Air Handler Troubleshooting Matrix (continued)
Symptoms of Abnormal
Operation
No Air Handler operation
No Air Handler operation
No Air Handler operation
No Air Handler operation
Air Handler operates at reduced
performance or operates on low
stage when high stage is expected
Diagnostic /
Status LED Fault Description
Codes
Circulator blower motor
senses a loss of rotor
control

Circulator blower motor
senses high current
Circulator blower motor
fails to start 10

consecutive times
Circulator blower motor
shuts down for over or
under voltage condition

Circulator blower motor
shuts down due to over
temperature condition on
power module
Circulator blower motor
does not have enough
information to operate
properly

Motor fails to start 40
consecutive times
Airflow is lower than

demanded
Possible Causes
Abnormal motor loading,
sudden change in speed or
torque, sudden blockage of air
handler air inlet or outlet
Obstruction in circulator
blower housing
Seized Circulator blower
motor bearings
Failed circulator blower motor
High or low AC line voltage to
air handler
High ambient temperatures
Error with integrated control
module shared data
Blocked filters or restrictive
ductwork
Undersized ductwork
22
Corrective Actions
Check filters, filter grills/registers,
duct system and air handler
inlet/outlet for blockages
Check circulator blower for
obstructions
Remove and repair/replace
wheel/motor if necessary
Check circulator blower motor shaft
rotation and motor, replace motor if
necessary
Check power to air handler
Verify line voltage is within the range
specified on the rating plate
Verify control is populated with the
correct shared data
Check filters for blockage, clean
filters or remove obstruction
Check ductwork for blockage,
remove obstruction and verify all
registers are fully open
Verify ductwork is appropriately sized
for system, resize/replace ductwork if
necessary