Central heating boiler thermister

[dave lfc]

Hi everyone my boiler is only running cold water/heating is fine, and the fault code that came up is H3 which is the thermister.so i bought one but cannot seem to find where it goes inside the boiler.the boiler is an isar ideal m30100 any help would be appreciated,cheers dave

[lloydy]

the hot water thermistor?.. its underneath the boiler, remove case and bottom cover. remove a plate thats fitted across the bottom, and you'll see it held in with a U clip

[dave lfc]

Thanks for that found it straight away,cheers dave