Glowworm Compact 80 Pilot Light

[RJDavison]

The pilot light on a Glowworm Compact 80 keeps going out after a period of running fine. I\\\'ve had the following new parts fitted:

Thermisters x2
PCB
Overheat stat (twice)

About to have a new air flow sensor switch fitted.

The boiler runs fine for about half an hour. I can then hear a loud switch and the whole thing just dies. I\\\'m guessing that this is the overheat stat turing the boiler off.

I\\\'ve read on other posts that a possible cause is a scaled up heat exchanger ?? Does anyone else have any other thoughts before I suggest this to the plumber coming around tomorrow.

 

[gasgeezer]

check the flow it should be set at 72 degs to stop it knocking out on over/heat you can set it on the pcb usually cuires fault your describing

 

[HarrogateGas]

The filer on the return (under the pump) is prone to blocking, if you speak to glowworm technical they tell you to remove it completey.

 

[RJDavison]

How would I adjust the temp on the PCB, from memory there isnt anything on there to adjust ??

 

[ChrisR]

check the flow it should be set at 72 degs to stop it knocking out

Not in the manual, is it?

 

[gasgeezer]

to adjust the temp. on the pcb there are 4 potentiometers adjust pot number 2 you should have a black plastic adjusting tool clipped to the back of the pcb cover. i adjust by running boiler up to temp and decrease until 72degs reached confirm this by clipping therm. to flow/return pipe.The other pots adjust dhw temp and the burner pressure for c/h and dhw It does not state this in the manual experience working with this boiler and talking to glow-worm engineers have resolved this problem in the past

 

[RJDavison]

Thanks for the help. Worked a treat.

I'm getting a problem with pulsating heat on the hot water system. Could it need a similar adjustment on the PCB for the hot water....if so, which of the 4 dials is it.

Thanks

Rob