82
aLTERNa TINg ‘c’ aND ‘2’ - BCC FaULT (BOILER ChIp CaRD)
Is the correct BCC for the boiler securely inserted into the
NO
Note. Ensure the correct orientation of BCC by
Replace the BCC with a new BCC (that is correct for the
83
NO Ch OpERa TION BUT hW WORKs OK
Is the mode knob in the Winter position?
NO
Move the mode knob to the Winter position
on?
NO
Are the Radiator Valves Open?
NO
Open the Radiator Valves
Is there 230Vac at (A)?
NO
Replace the Divertor Valve
a
REsET pROCEDURE
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