Klimaire GM80S Series - Manual (Page 30)

îè
I&O manual
Table 14 - Troubleshooting Chart
TROUBLE SHOOTING CHART
Symptoms of
Abnormal Operation Associated
LED
Fault Description(s) Possible reason Corrective Action Cautions and Notes
operate.
module diagnosic
LED provides
NO SIGNAL
NONE
furnace, or no 24 volt
power to integrated
control module
breaker
module has an
internal fault
or 24 volt wires
improperly connected
or loose.
breaker
module has an internal
fault.
power to furnace integrated
control module.
module fuse (3A). Replace
if necessary.
in 115 and 24 volt circuits.
Repair as necessary.
control module.
prior to repair.
module fuse with 3A
automotive fuse.
"Electrostatic Discharge"
section of manual.
operate
module diagnostic
LED is flashing
ONE (1) flash.
1 FLASH
2
FLASHES
3
FLASHES
4
FLASHES
to an excessive
number of ignition
attempts. flame. Cause may be
no gas to burners
bad igniter or igniter
alignment improper
orifices, or coated/
oxidized or improperly
connected flame sensor.
establishment. Cause
may be interrupted gas
supply lazy burner
flames (improper gas
pressure or restriction in
flue.
interruption.
Sand sensor if coated and
/or oxidized.
blockage proper length
elbows and termination.
blower performance.
prior to repair.
handle with care.
sensor with steel wool.
operate.
module diagnostic
LED is flashing
TWO (2) flashes
circuit is closed.
blower is not
operating.
pressure switch contacts
sticking.
switch circuit.
blower pressure switch. prior to repair.
switch with proper
replacement part.
runs continuously
with no further
furnace operation.
Integrated control
module diagnostic
LED is flashing
THREE (3) flashes.
circuit not closed.
Induced draft blower
is operating blocked pinched or
connected improperly
Blocked flue or weak
induced draft blower.
setpoint or malfun
ctioning switch contacts.
connected wiring.
hose. Repair
if necessary,
proper length elbows
and termination.
setpoint or contact motion.
wiring connection.
repair.
Ventilation Air Requirements"
section for details.
with proper replacement part.
runs continuously.
No furnace operation.
module diagnostic
LED is flashing
FOUR (4) flashes.
is open.
is open
reverse flow limit switch.
air over the heat
exchanger. Blocked
filters restrictive
ductwork,improper
circulator blower speed
or failed circulator blower.
connected wiring.
flow limit switch. Replace
if necessary.
for blockage. Clean filters
or remove obstruction.
speed and performance.
Correct speed or replace
blower if necessary.
connection.
repair.
proper replacement part.
correct replacement part.
switch with proper
replacement part.
1 Integrated control module will automatically attempt to reset from lockout after one hour.
2 LED Flash code will cease if power to the control module is interrupted through the disconnect or door switch.