Instructions / Assembly
40
Before You Call For Service…
Alarm (‘A’)
and Alert
(‘T’) Codes
Description Current Alarm Screen Display
A001
Ignition lockout due to a total of 9 consecutive
failed ignitions. This will disable the heater.
A001 Ignition lockout.
->Clear error code by turning the unit off/on.
If problem persists, please contact technical sup-
port or service provider.
A002
Flame not stable lockout. Lost ame three times
during one heat cycle. This will disable the
heater.
A002 Flame is not stable.
->Clear error code by turning the unit off/on.
If problem persists, please contact technical sup-
port or service provider.
A003
The intake pressure switch was detected open
when the blower was running. This will disable
the heater.
A003 Intake Switch open. Check Wiring/Venting
->Check switch wiring and venting. If prob-
lem persists, please contact technical support or
service provider.
A004
The proof of air ow switch was detected open
during heating operation. This will disable the
heater.
A004 PoF Switch error H. Check Blower/Wiring.
->Check switch wiring and venting. If prob-
lem persists, please contact technical support or
service provider.
A005
The proof of air ow switch was detected open
during pre-purge operation. This will disable
the heater.
A005 PoF Switch error E. Check Blower/Wiring.
->Check switch wiring and venting. If prob-
lem persists, please contact technical support or
service provider.
A006
The proof of air ow switch was detected open
during post purge operation.
A006 PoF Switch error P. Check Blower/Wiring.
->Check switch wiring and venting. If prob-
lem persists, please contact technical support or
service provider.
A007
Exhaust ue pressure switch was detected open
during heating. This will disable the heater.
A007 Exhaust Switch open. Check Wiring/Vent-
ing
->Check switch wiring and venting. If prob-
lem persists, please contact technical support or
service provider.
A008
The proof of air ow pressure switch was de-
tected closed before the blower started opera-
tion. This will disable the heater.
A008 PoF Switch/Blower mismatch. Call Tech
Svc
->The Proof of Fan pressure switch is closed
when the blower is off. Please contact technical
support or service provider.
T009
Gas pressure is below minimum specied. This
will cause difculties lighting the unit.
T009 No Gas detected. Check gas connections
->Verify gas supply to the unit. Check wiring
to the gas pressure switch. If problem persists
contact technical support.