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63 FAULT FINDING CHART MAIN MENU
In order to assist fault finding the boiler has a 7 segment display. The key to the display codes is as follows:
ALTERNATING 'L' and '1'
ALTERNATING 'L' and '2'
ALTERNATING 'L' and '5'
ALTERNATING 'L' and '6'
ALTERNATING 'F' and '0'
ALTERNATING 'F' and '1'
ALTERNATING 'F' and '2'
ALTERNATING 'F' and '3'
ALTERNATING 'F' and '4'
ALTERNATING 'F' and '5'
ALTERNATING 'F' and '6'
ALTERNATING 'F' and '7'
ALTERNATING 'F' and '9'
ALTERNATING 'c' and '2'
ALTERNATING 'c' and '0'
NO DISPLAY
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 specific boiler range and output.
**If PCB replaced as a spare ensure that the BCC (boiler chip card - small plastic part) is fitted to the PCB otherwise replace PCB.
RESTART PROCEDURE - To restart boiler, turn mode knob to restart position and immediately turn knob back to required setting.
50
FAULT FINDING
NO CH
NO HW
GO TO FRAME 64 -
FLOW TEMPERATURE OVERHEAT LOCKOUT
or NO WATER FLOW LOCKOUT
GO TO FRAME 65 -
IGNITION LOCKOUT
5 RESTARTS WITHIN 15 MINS -
TURN POWER OFF AND ON
GO TO FRAME 66 -
FALSE FLAME LOCKOUT
BCC (BOILER CHIP CARD) NOT FITTED
SEE FRAME 51
GO TO FRAME 67 -
LOW WATER PRESSURE
GO TO FRAME 68 -
FLAME LOSS
GO TO FRAME 69 -
FAN FAULT
GO TO FRAME 70 -
CONTROL/NO FLOW THERMISTOR FAULT
GO TO FRAME 71 -
RETURN THERMISTOR FAULT
GO TO FRAME 72 -
OUTSIDE SENSOR FAULT
LOW MAINS VOLTAGE -
CONTACT ELECTRICITY PROVIDER
PCB FAULT -
**REPLACE PCB
GO TO FRAME 73 -
BCC FAULT (BOILER CHIP CARD)
RESTART BOILER
GO TO FRAME 74
GO TO FRAME 76
GO TO FRAME 75
Installation and Servicing
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