Baxi solo 30HE, Experienced advice?

[Ted808]

This is an elusive problem.
The boiler keeps goin to lock out when it's on DHW only, fella has to reset it sometimes 3xday, yet i was there for hour n half nothing, after reset when I arrived...
I checked gas inlet pressure-19mB with both HW+CH on.. maybe i shoulda done it with only HW?
Checked condensate trap and the next thing on the 'fault finding list' is the flame detection probe- damaged...
My question is... cuz i not seen any broken ones before... how do i know it's knackered.. the thing bothering me is that it works sometimes...?
So, do I just get a replacement electrodes kit, then change it. I mean time wise and money wise.
Been on to their techi help line, still no obvious solution.
Need some experienced advice.... anyone?

 

[Mike Jackson]

How are the lights flashing when it locks out?

 

[jtsplumbing]

Have you run through all of the fault finding in the Ignition and overheat lockout section of MI ? has customer got them ?

 

[diamondgas]

Ted 808, sometimes with intermittent faults you have to start somewhere or the custard looses faith ... I've explained on many occasions that I can not be 100% but lets start with the cheapest possible cause and take it from there! Always seek their permission and be honest ........... You could measure the spark/detection electrode gaps and check the earthing on the electrode and boiler. Poor earth's can lead to rectification notification issues....

 

[Poxi]

My question is... cuz i not seen any broken ones before... how do i know it's knackered.. ... anyone?

You measure the resistance of the electrodes, Is there a coating of Carbon on them ??..If ignition L/O then always change the electrodes

 

[Ted808]

The lights are on - off - on. MI say ignition fault. Following fault chart. Got to the bit with the electrode.. but ran out of time, have to go back.

 

[Ted808]

Thanks diamongas.. will add that to my list to check next time.. and I look forward to solving the problem...

 

[Ted808]

You measure the resistance of the electrodes, Is there a coating of Carbon on them ??..If ignition L/O then always change the electrodes

Thanks poxi, think I will get a set of electrodes before my next visit, gotto start doing something.

 

[Poxi]

Thanks diamongas.. will add that to my list to check next time.. and I look forward to solving the problem...

If ignition L/O then always change the electrodes

Trust me on this one :25:

 

[mfgs]

The electrodes are a common fault on these, definitely start with them.