Potteron Lynx Help!!!!

[alexmack2006]

Hi,

I have a Potteron lynx 2 and it recently has stopped working!!!
When you demand hot water or put the heating on, the boiler attempts to light (you can hear the clicking) but it seems there is no gas. I have checked and have not been cut off!!!
I wont attempt repair myself but would like to have an idea when i call an engineer!!!
Any Ideas??
Many Thanks

 

[geoff@cetltd]

Either the gas valve's knacked (solenoid ?) or the pcb isn't sending volts to the gas valve(s)

 

[tryitandsee]

Can you hear the fan operating, if not, first check the fuse in distribution board, if blown replace with new fuse.
Replace fan if still not working.

It sounds like air is not being drawn out of the boiler (by the fan) thus not activating the air pressure switch thus not activating gas solenoid.

However, if fan is working, check the air pressure switch.

 

[Agile]

Have you tried to reset the overheat stat?

Reddish thing to push on the underside!

Tony

 

[alexmack2006]

The boiler is now working intermittantly!!

When you demand water it ignites occasionally but only stays on for 2-3 minutes before cutting out again. It tries to ignite again but it does not light and locks out!!! Once i have reset it it may work the next time you demand water or it locks out!!!

Puzzling!!!

Any ideas greatly appreciated!

 

[geoff@cetltd]

"Can you hear the fan operating, "

"Have you tried to reset the overheat stat? "


He says he can hear it clicking, therefore the fan should be operating and the overheat stat shouldn't have tripped

He's got dodgy solder joints on the pcb I bet

 

[tryitandsee]

Raden is probably right.

The full sequence board is 'push pinned' onto the distribution board.

For some reason the connections (which are numerous) aren't connecting.
Just by moving the sequence board sometimes remakes the connection again and the problem disappears.

This happened once on a Lynx electronic. I was at the point of buying a new sequence board and distribution board (both £100 each) as I could not tell which one was faulty, but just by 'jiggling it', the problem disappeared and so far, never happened again.

 

[Agile]

Try it, I think that you are thinking of the original Lynx!

This we are told is the Lynx 2 which has a single PCB which is fairly reliable apart from the fault of not restarting after getting up to temperature and turning off. Most people change the boiler at this point as they are getting pretty old now.

Tony

 

[alexmack2006]

Have tried 'jiggling' it around but to no avail.

Its stopped working completly now and just tries to ignite but doesnt and then locks out!!!

I think im gonna have to buy a new one!!!

 

[tryitandsee]

Check the basics, make sure the pump is spinning. Could be stopping and starting periodically.

 

[alexmack2006]

Had a CORGI engineer out and he could not find the fault.

It seems the previous owner had had a bodge job done and has played around with the system.

Am going to buy a new one.

Any recommendations??

 

[Agile]

I am very sorry that the CORGI was unable to find the fault. I can assure you that many engineers are quite capable of finding faults.

Unfortunately you are rather outside our normal visiting range and particularly when the fault is not clearcut and on a boiler that I dont have to visit that often then I would be reluctant to make you any offers.

If you had been in our area then I would have been able to find the fault for you.

Tony Glazier

 

[alexmack2006]

Thanks anyway.
Had another CORGI guy come give us a quote and he outlined we would need to rip the floor up from the gas meter to the boiler as the pipe is currently 15mm and needs to be 22mm.
He said the pipe would need to be 22mm from the meter to with in a couple of metres of the boiler!!!
Is this correct??

 

[Gasguru]

Correct - and where the meter is some distance often the gas pipework is 28mm (dependent on calculations).

It appears the previous installation was running off an undersized gas pipe and with the introduction of Gas Work Notification the new installation must comply with current regualtions.

 

[alexmack2006]

Ive literally just had another CORGI guy come take a look to give me a quote and he didnt even mention it??
I dont understand how two apparently CORGI guys would have different opinions?
is there no way round this 22mm rule??