Ideal Boiler Fault

[andrewxhosa]

I have an Ideal Isar He35 gas combi boiler fitted. It recently blew the main Pcb which i have had changed and it appears to be working fine however the `t` code now comes on 3 to 4 times every hour. I Know that it is meant to come on periodically to keep the tap water supply hot but i think that it is coming on to often.

It also seems to be affecting the Temp of the house..... My thermostat is set to 21degrees but i cant get the room temp below 24degrees the boiler therefore doesnt fire for the Central Heating and yet the radiators are getting hot.

Anyone with any help would be much appreciated......

Thanks in advance guys

 

[HarrogateGas]

The divertor valve is passing..........rare fault on the new type divertor valves which your model will have.

 

[andrewxhosa]

what could be causing this do you know? Or is it just faulty?

 

[gas4you]

Have you got a very, very slow dripping hot tap somewhere?

Take the DV head off and press the pin in and out several times. It may unstick the valve.

 

[andrewxhosa]

I have checked the valve and that appears to operate ok. Also the actuator solenoid works ok aswell.Also no taps left on

I have noticed various jumper connections on the PCB is which need to be set for individual boilers is there any chance that they could be wrong and causing the problem?

 

[Kristoflampie]

dhw thermistors are rubbish on these , try replacing it, sounds like its reading the wrong resistances, .I have had new ones fail on me before.

 

[corgiman]

As Dave says

a pound will get to a pinch of shyte there is a leak/drippy tap somewhere on the HW system

 

[superdupergasman]

The divertor valve is passing..........rare fault on the new type divertor valves which your model will have.

Rare my foot!!!!


PCB jumpers, I would not think, would be causing the problem....

are your rads heating up at all???