Ideal Isar HE24 display panel is dead?

Sympton was control panel dead, with no lights showing on user controls, and no response to control panel on/off switch despite mains power and fuse being in good working order.

Boiler engineer used multimeter to check that all electrical values were correct.

First part of the solution was to change the PCB printed circuit board.

This reinstated power to consumer control panel, and pump operated normally. However, fan and boiler remained out of order, and display showed H 4.

Fault-finding frame 87 is not complete: replace PCB alone does not resolve the problem. It is necessary to insert jumper links in the top right of the new PCB plastic case, in the same pattern as jumper leads in the top right of the old PCB plastic case.

Boiler then resumed normal operations.

mkpaul
January 2015

Hi,
I am facing the same problem. can you please advice on what the issue was and the solution.

Thanks
Maj

Maj
November 2010

Same problem for me. If you have an answer, I'd be grateful for the info as the thought of waiting for hot water from today (Sat) till Tuesday is horrendous. Thanks in advance JJ

JJ
August 2010