Boiler stays in 'C' status even when it should be off - icos he18

[Baz1978]

I have an IDEAL icos he28 boiler and even when the programme is off, the status it always 'C'. When it's off the LED flashes and then when it fires up the LED stays on. I know from the manual that when the LED is on the boiler is working and when it's flashing the required temp has been achieved so it turns off.
My 1st question: How do I get it to reset the status to 'O' when the programme is off? (I tried the reset button, but no joy)
My 2nd question: Is this a boiler issue, a programmer issue or possibly a problem with a faulty valve?
Any help would be greatly appreciated, thanks.

 

[Harvest Fields]

Did we not have this question the other day?

 

[Chuck]

Did we not have this question the other day?

Different person asking:

Cos HE24. Central heating will not turn off

 

[Baz1978]

Thanks for the responses, sorry i only saw the other thread for Cos HE24 after I'd already posted. I was able to figure out a solution to my problem from that post.

 

[Harvest Fields]

Brilliant. Glad that we could help.🙂😉

 

[Chris777]

Hi

I had a chap out on Saturday to fix an L2 error on my boiler. Now the C status will not go off and is constantly running - not constantly heating, just whirring away. I've turned off and on, reset the control panel, and topped up the pressure to 1.5 bar. It still stays on. On resetting the panel it doesn't come on immediately, but once triggered won't go off. Please help!?

 

[ShaunCorbs]

It might take 15-20 mins for it to go off on heating (pump overrun) but shouldn't be more than half an hour

 

[Chris777]

It might take 15-20 mins for it to go off on heating (pump overrun) but shouldn't be more than half an hour

Thanks. Yeah, it's like that just won't stop and stays on "C".

 

[ShaunCorbs]

All the time eg an hour plus

 

[Chris777]

Yes, until I turn the dial on the boiler to off, then after a few mins it stops. Otherwise it stays at C even though the thermostat and control panel aren't calling for heat. The blue flame light doesn't stay on just the C and the sound of what I guess it's the pump.

 

[Harvest Fields]

Have you turned you timer to off and your thermostat down to see if it goes away?

 

[Chris777]

Have you turned you timer to off and your thermostat down to see if it goes away?

I have and it doesn't. But I've just noticed a thermostat on the cistern that is set to almost full (60) and currently reads 32. Is that right?

 

[Chris777]

 

[Chris777]