Amana GMES9 Series Service And Troubleshooting page 52

TROUBLESHOOTING
• Circulator blower runs
continuously. No furnace operation.
• Integrated control
module diagnostic LED is
flashing FOUR (4) flashes.
• Induced draft blower and
circulation blower runs
continuously. No furnace
operation.
• Integrated control module
diagnostic LED is flashing FIVE
(5) flashes.
• Furnace fails to operate.
• Integrated control module
diagnostic LED is flashing SIX
(6) flashes.
• No furnace operation.
• Normal furnace operation.
• Integrated control module
diagnostic LED is flashing SEVEN
(7) flashes.
• Furnace not operating.
• Integrated control module
diagnostic LED is flashing EIGHT
(8) flashes.
• Circulating blowers not
operating simultaneously.
No blower operation.
52
• Primary or auxiliary
limit circuit is open.
4
4 FLASHES
• Flame sensed with no
5
call for heat.
5 FLASHES
•Rollout limit open.
•Integrated control
6
module fuse is blown.
6 FLASHES
• Flame sense microamp
signal is low.
7
7 FLASHES
• Igniter Relay Fault
8 FLASHES
•Twinning Fault
9 FLASHES
• Faulty primary or • Check primary/
auxiliary limit switch. auxiliary limit.
• Insufficient conditioned Replace if necessary.
air over the heat • Check filters and
exchanger. Blocked ductwork for blockage.
filters, restrictive Clean filters or remove
ductwork, improper obstruction.
circulator blower speed, • Check circulator blower
or failed circulator speed and performance.
blower. Correct speed or
• Loose or improperly replace
connected wiring. blower if necessary.
• Tighten or correct
wiring connection.
• Short to ground in • Correct short at flame
flame sense circuit. sensor or in flame
sensor wiring.
• Flame rollout. • Check burners for
• Misaligned burners, proper alignment.
blocked flue and/or air • Check flue and air inlet
inlet pipe, or failed piping for blockage,
induced draft blower. proper length, elbows,
• Loose or improperly and termination.
connected wiring. Correct as necessary.
• Short in 24 volt AC • Check rollout limit.
control circuits or Replace if necessary.
safety circuits. • Check induced draft
• Faulty rollout limit. blower for proper
performance. Replace,
if necessary.
• Tighten or correct
wiring connection.
• Flame sensor is • Sand flame sensor.
coated/oxidized. • Inspect for proper
• Flame sensor sensor alignment.
incorrectly positioned • Compare current gas
in burner flame. pressure to rating plate
• Lazy burner flame info. Adjust as needed.
due to improper gas
pressure or
combustion air.
•Improperly connected •Check and correct
igniter. wiring from integrated
• Bad igniter. control module
• Poor unit ground. to igniter.
• Poor burner ground. •Replace bad igniter.
• Faulty integrated •Check & correct unit
control module. ground wire.
• Replace bad integrated
control module.
• Furnace twin terminals • Install field wiring
not connected together connecting twin
by field wiring. terminals, check
• Isolating relay not used continuity of wiring.
or improperly installed • Verify each furnace fan
motor is operable
without twinning
connection.
• Wire per twinning
diagram in this
installation manual
• Turn power OFF prior
to repair.
• Replace primary/
auxiliary limit with
proper replacement
part.
• Replace blower with
correct replacement
part.
• Turn power OFF prior
to repair.
• Turn power OFF prior
to repair.
• See "Vent/Flue Pipe"
section for piping
details.
• Replace induced draft
blower with correct
replacement part.
• Replace integrated
control module fuse
with 3A automotive
fuse.
• Read precautions in
"Electrostatic
Discharge" section
of manual.
• Replace rollout limit
with correct
replacement part.
• Turn power OFF prior
to repair.
• Clean flame sensor
with steel wool.
• See "Vent/Flue Pipe"
section for
piping details.
• See rating plate for
proper gas pressure.
• Turn power OFF prior
to repair.
• Replace igniter
w/proper replacement
part.
• Read precautions in
"Electrostatic
Discharge" section
of manual.
• Verify line voltage
supply is turned off
before proceeding
with corrections