Glowworm Xtrafast 120 not igniting

[ngms27]

Getting a spark but gas doesn't ignite. Then get a fault code 04.

If I turn the boiler off at the main and back on I can then get the thing to ignite.

It's as though the gas is getting through and it's sparking but either the gas or the spark isn't enough.

Any ideas?

 

[fazedup71]

some of these had an issue with gas valve sticking but there's not a lot you can do really you need an RGI to test it, he needs to check the burner pressure and the correct operation on the valve

 

[Agile]

Getting a spark but gas doesn't ignite. Then get a fault code 04.
Any ideas?

I notice you posted recently about an overheat fault code 05 and was given some advice about that.

Whats was the outcome of that problem?

Tony

 

[ollski]

Is it definitely getting a spark?, the honeywell ignition pcbs on these (on the gas valve) are usually to blame for most faults.

 

[fazedup71]

no ignition pcb on gas valve with this model

 

[ngms27]

The 05 code has gone away.

I'd been resetting the thermostat everytime as a matter of course but it wasn't until I scrolled through the faults that it's really failing with 04.

Definitely get a spark but intermittently not igniting. I cleaned out the combustion chamber yesterday and it is better but still not foolproof.

Could it be:

a) The electrodes? Maybe the gap has widened?
b) Gas valve / solenoid sticking?
c) PCB?

 

[ollski]

no ignition pcb on gas valve with this model

I hope there is, otherwise I will be quite curious as to how I shoehorned one into it last week.

 

[Agile]

Could it be:

a) The electrodes? Maybe the gap has widened?
b) Gas valve / solenoid sticking?
c) PCB?

Well it could be one of those or several other things.

The electrode gap is easy to check but I cannot advise you to do that yourself as it should be done by a competent CORGI as should opening the combustion chamber for any reason.

Tony