H-2 error code with Ideal Isar HE24 boiler

[boilerwoes1]

Hello all

We've got a Ideal Isar HE24 boiler (not through choice I must add - came with flat!)

We currently have a H-2 error code so nothing's working.

Had the gas man out (luckily we have cover) to fix it.

He tested it as per manual and replaced the PCB today but that hasn't worked.

Now he's ordered a new thermistor which will hopefully be fitted next week.

But to be honest, I don't think that will work - such is my low confidence on this cr*ppy boiler.

Anyone else had a similar issue?

 

[diverdee]

had a lot of these.it is the return thermistor bad readings or oc or short.2 min to change and cheap.should read in region of 9700 to 10300 ohms when at 25 c.waste of time changing pcb he needs a meter

 

[cider]

had a lot of these.it is the return thermistor bad readings or oc or short.2 min to change and cheap.should read in region of 9700 to 10300 ohms when at 25 c.waste of time changing pcb he needs a meter

he changed the p.c.b. cus he had s.f.b.

 

[diverdee]

sfb?

 

[diverdee]

ahhhhhhhhhh xxxx for brains lol got ya

 

[ChrisR]

I saw a confidential internal memo at Ideal, giving instructions to their engineer team for the most cost-effective actions for many of the error codes. I managed to take a snap on my phone.
It's probably a breach of confidence or something but what the heck, it's
HERE

 

[gasandoilman]

 

[Gasguru]

 

[diverdee]

yep they certainly keep warmsure in a job lol

 

[corgiman]

Probably a knackered fan is memory serves

 

[gas4you]

H2, is as said above, control thermistor (return).

Check resistances.

 

[corgiman]

Last time I had a H2 error dave it turned out to be a blocking signal on the fan

new fan job done, but hey ho