Ideal Evo He fault code sos

[pen4uk]

Can anybody help? My boiler is showing a code H3 please help

 

[Andygasman2010]

I think this is hot water thermistor fault.... Any other takers?

 

[PEDANTICVINDICTIVEMAN]

Isn't it in the list of fault codes in your installation instuctions ?

 

[combispecialist]

cant remember wot h3 is,ill try and look,i know h1 and h2 are flow/return thermistor fault codes

 

[pen4uk]

Thanks for your help, someone else has mentioned this Thermistor, Could you tell me where is it, will it need replacing? or is it fixable? any advice how to do it would be very appreciated!!

 

[Andygasman2010]

Theres a check or two you can do if you have a multimeter and a little electrical knowledge....??

It's on the underside of the boiler with two (possibly blue) wires going to it.

There may have been a leak onto it causing the problem.

 

[gas4you]

Yes it is the DHW thermistor/ntc.

Easy to change, but is in a wet pocket, so cold inlet need to be turned off first.