Fault Finding - IDEAL HE15 Installation And Servicing

69 FAULT FINDING CHART MAIN MENU
In order to assist fault finding the boiler has an LED diagnostic display. The key to the display codes is as follows:
IF BOILER FAILS TO RUN WHEN
DEMAND IS PRESENT
ALTERNATING 'L' 'F'
ALTERNATING 'L' 'E' OR 'HE'
ALTERNATING 'L' 'A'
ALTERNATING 'L' '8'
ALTERNATING 'H' '1'
ALTERNATING 'H' 'F'
ALTERNATING 'H' '4' or 'H9' or 'L9'
ALTERNATING 'H' 'n'
70 CONDENSATE PUMP FAILURE
Is switched live present on the L2
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?
Follow normal boiler fault finding
mexico HE -
Installation & Servicing

FAULT FINDING

terminal?
YES
YES
YES
procedure.
GO TO FRAME 70
GO TO FRAME 71
GO TO FRAME 72
GO TO FRAME 73
GO TO FRAME 74
GO TO FRAME 75
GO TO FRAME 76
GO TO FRAME 77
GO TO FRAME 78
NO
Check external controls wiring
and function.
NO
Check condensate pump reservoir is
empty and check overflow float switch is
moving freely.
NO
Check wiring continuity from L2
through to the PCB J1 black wire.
45