70
FAULT FINDING CHART MAIN MENU
ALTERNATING ‘L’ ‘F’
GO TO FRAME 72
ALTERNATING ‘L’ ‘E’ OR ‘HE’
GO TO FRAME 73
ALTERNATING ‘L’ ‘A’
GO TO FRAME 74
ALTERNATING ‘L’ ‘8’
GO TO FRAME 75
ALTERNATING ‘H’ ‘1’
GO TO FRAME 76
ALTERNATING ‘H’ ‘F’
GO TO FRAME 77
ALTERNATING ‘H’ ‘4’ or ‘H9’ or ‘L9’
GO TO FRAME 78
ALTERNATING ‘H’ ‘n’
GO TO FRAME 79
IF BOILER FAILS TO RUN WHEN
DEMAND IS PRESENT
GO TO FRAME 71
71
CONDENSATE PUMP FAILURE
Is switched live present on the L2
terminal?
NO
Power down the boiler and check for
continuity between the common (C)
and normally closed (NC) wires on the
condensate pump. Is there continuity?
Re-apply power to the boiler. Is switched live
present on the common (C) terminal of the
condensate pump connector?
Check external controls wiring and
function.
NO
Check condensate pump reservoir is
moving freely.
NO
Check wiring continuity from L2 through
to the PCB J1 black wire.
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