Intermitant Hot Water from Ideal Isar HE24 Combi Boiler

[bhall]

Hi there,

I wonder of anyone can help me. We moved into a brand new house 5 years ago and recently we have been experiencing boiler problems.

A few months ago, the boiler wouldn't light, we saw the error code on display and checked with the manual, it said it was the ignition electrode. We got that fixed, problem solved.

Recently, we have noticed that the hot water from the taps or shower runs hot / cold / hot / cold / luke warm etc.... but there is no error code this time on the display! I've let the water run and had a look at the boiler and it appears to light up as the burner light comes on, it stays on for about 30 seconds and then it goes off, flashes for a few seconds, goes off for 20 seconds or so and then relights and goes through the cycle again.

I've read a couple of threads on simular problems but with different boilers, but wondered if anyone could help me with the diagnostic of our problem?

Thanks in advance for your help.

Ben

 

[trooper]

could be that the secondry heat exchanger is choked up, needs taking out and flushing through.

 

[bhall]

Thanks for that, where would I find that part?

 

[trooper]

youll need a competent plumber to remove it.

 

[markymark1234567]

Definetly the plate 2 plate heat exchanger blocked. I've changed hundreds of them. Try ebay pretty cheap on there.