Observation:

                                       FAULT CODE NOT PRESENT RETURN TO SELECTION PAGE
Select appropriate error code:
CODE /FAULT DESCRIPTIONCODE /FAULT DESCRIPTION
F1 IGNITION LOCKOUT F13PCB MEMORY OR SENSING FAULT
F2 FAN FAULTF14GAS VALVE FAULT
F3 FAN / WIRING FAULTF15EBUS VOLTAGE FAILURE
F4FLAME GOES OUTF22LOW WATER / NO TEMP RISE
F5OVERHEAT F25TEMP DIFFERENTIAL FAULT
F6FLOW THERMISTORF43GENERIC ERROR
F7DHW THERMISTOR F70INVALID DSN
F9NO PRESSURE RISE DETECTED F73PRESSURE SENSOR
F10RETURN THERMISTOR F77CONDENSATE PUMP
F11FLOW OR RETURN THERMISTORERCOMMUNICATION FAULT
SESERVICE DUE