Instructions / Assembly

45
BEFORE YOU CALL FOR SERVICE…
Alarm (‘A’)
and Alert
(‘T’) Codes
Description Current Alarm Screen Display
A025
Control does not detect blower RPM. This will disable
the heater.
A025 No Blower RPM feedback. Call Tech Service
->Contact technical support or service provider.
A026
Blower RPM feedback (actual RPM) is ≥300 RPM from
desired RPM for > 1 minute.
A026 Blower expected RPM vs actual RPM mismatch
->Contact technical support or service provider.
A027
Flame current detected prior to opening gas valve.
This will disable the heater.
A027 Flame present before ignit. Call Tech Svc
->Clear error code by turning the unit off and on.
If problem persists please contact technical support or
service provider.
A028
Flame current detected 10 seconds after closing gas
valve. This will disable the heater.
A028 Flame present w/o heating. Call Tech Svc.
->Clear error code by turning the unit off and on.
If problem persists please contact technical support or
service provider.
T029 Unit did not light. T029 Failed ignition. Retrying.
A030 Unit lost flame. A030 Flame lost during heating. Retrying.
T032
Lower (inlet) thermistor analog to digital converter
fault.
T032 Lower Tank temp A/D error. Call Tech Svc.
->If problem persists, please contact technical
support or service provider.
A033
Exhaust flue thermistor analog to digital converter
fault. This will disable the heater.
A033 Flue sensor A/D error. Call Tech Service.
->If problem persists, please contact technical
support or service provider.
A034
Upper tank thermistor analog to digital converter fault.
This will disable the heater.
A034 Upper Tank temp A/D error. Call Tech Svc.
->If problem persists, please contact technical
support or service provider.
T035
Gas relay #1 contacts did not close. The unit
will continue to try and close the relay to initiate
combustion.
A035 Gas Relay 1 stuck open. Call Tech Service
->If problem persists, please contact technical
support or service provider.
A036
Gas relay #1 stuck closed. This could inadvertently
allow the gas valve to open. This will disable the
heater.
A036 Gas Relay 1 stuck closed. Call Tech Svc.
->If problem persists, please contact technical
support or service provider.
A037
Gas relay #2 contacts failed to properly close. This can
cause gas valve cycling and gas buildup in the burn
chamber. This will disable the heater.
A037 Gas Relay 2 stuck open. Call Tech Service
->If problem persists, please contact technical
support or service provider.