Fault Finding
Fault Finding Fault Finding Fault Finding Fault Finding Fault Finding
Logic Combi ES - Installation and Servicing
71
FAULT FINDING CHART MAIN MENU
GO TO FRAME 72 -
GO TO FRAME 73 -
IGNITION LOCKOUT
GO TO FRAME 74 -
FALSE FLAME LOCKOUT
GO TO FRAME 75 -
LOW WATER PRESSURE
GO TO FRAME 76 -
FLAME LOSS
GO TO FRAME 77 -
FAN FAULT
GO TO FRAME 79 -
RETURN THERMISTOR FAULT
GO TO FRAME 78 -
THERMISTOR FAULT
GO TO FRAME 80 -
OUTSIDE SENSOR FAULT
PCB FAULT -
**REPLACE PCB
RESTART BOILER
NO CH BUT HW OK
NO HW BUT CH OK
NO DISPLAY
GO TO FRAME 82
GO TO FRAME 83
GO TO FRAME 84
**If PCB replaced as a spare ensure that the BCC (boiler chip card - small plastic part) is tted to the PCB otherwise replace PCB.
5 RestartS WITHIN 15 MINS -
TURN POWER OFF AND ON
RESTART PROCEDURE - To restart boiler, turn mode knob to restart position and immediately turn knob back to required setting.
GO TO FRAME 81 -
Note that production boiler PCBs are factory pre-set to operate for boiler range and output, but when ordering Primary PCB as a
spare, an additional Boiler Chip Card (BCC) MUST also be purchased for your specic boiler range and output.
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