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SECTION 4 - FAULT FINDING
4.12 ALTERNATING ‘F’ AND ‘7’ - LOW MAINS VOLTAGE
Reset the boiler
Has the boiler reset?
Contact electricity provider
OK
4.13 ALTERNATING ‘F’ AND ‘9’ - PCB FAULT
4.14 ALTERNATING ‘C’ AND ‘0’ - BCC ACTIVATION FAULT
Reset the boiler
4.15 ALTERNATING ‘c’ AND ‘2’ - BCC FAULT (BOILER CHIP CARD)
Is the correct BCC for the boiler securely inserted into the
slot at the front left of the PCB?
(identified by the label on the BCC)
YES
NO
Securely insert the correct BCC for the boiler
into the PCB and after switching power on and
‘c0’ being shown, reset boiler.
Note.
Ensure the correct orientation of BCC by
placing “TOP” side up.
Replace the BCC with a new BCC (that is correct for the
boiler). After switching power on and ‘c0’ being shown,
press reset. Is ‘c2’ still shown?
Replace PCB
YES
RESET PROCEDURE
- To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting.
RESET PROCEDURE
- To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting.
Replace PCB -
Ensure that the BCC (boiler chip card - small plastic part) is
fitted to the PCB otherwise replace PCB.
RESET PROCEDURE
- To reset boiler, turn mode knob to reset position and immediately turn knob back to required setting.
NO
YES
Содержание GB24
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