Troubleshooting Chart - Amana MVC96 BB Series Installation Instructions Manual

TROUBLESHOOTING CHART

Symptom
Furnace fails to operate
Normal operation
Furnace fails to operate
Integrated control module LED
display provides no signal
Furnace fails to operate
Furnace fails to operate
Furnace fails to operate
Furnace operates at reduced
performance
Airflow delivered is less than
expected
Furnace fails to operate
Furnace fails to operate
Furnace fails to operate
Furnace fails to operate
LED
Fault Description
Status
Equipment lacks shared data

Normal operation

No 115 power to furnace or no 24 volt power to
integrated control module.
Blown fuse or tripped circuit breaker

Integrated control module is non - functional
Circulator blower motor is not running when it

should be running.
Integrated control module has lost

communications with circulator blower motor.
Circulator blower motor horse power in shared
data set does not match circulator blower motor

horse power.
Circulator blower motor is operating in a power,

temperature, or speed limiting condition.
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 lacks information to
operate properly.

Motor fails to start 40 consecutive times.
Populate shared data set using memory card.
None
Restore high voltage power to furnace and
integrated control module.
Correct condition which caused fuse to open,
replace fuse.
Replace non-functional integrated control
module.
Tighten or correct wiring connection. Verify
continuous circuit through inductor Replace if
open or short circuit.
Check circulator blower motor, replace if
necessary.
Tighten or correct wiring connection.
Check circulator blower motor. Replace if
necessary.
Check integrated control module, replace if
necessary.
Verify circulator blower motor horse power
match with nameplate, replace if necessary.
Verify shared data set is correct for the specific
model, re-populate data using correct memory
card if required
Check filters for blockage, clean filters or remove
obstruction.
Check ductwork for blockage and verify all
registers are fully open.
Verify ductwork is appropriately sized for system,
resize and/or replace ductwork if necessary.
Check filters, filter grille, registers, duct system
and equipment inlet/outlet for blockage, make
necessary corrections and retest.
Check circulating blower for obstructions.
Repair or replace blower motor or wheel as
required.
Check circulating blower shaft for proper rotation.
Check voltage to furnace and verify within
nameplate specified range.
Check for locked rotor condition.
Check integrated control module and verify it is
populated with the correct shared data.
45
Corrective Actions