Sabre 29he boiler problems

[Harvest Fields]

If it is for a friend or family member I would be more inclined to tell them to fit a new boiler. £450.00 for a Vokera call out(max) could go towards a a new one and to be fair there is nothing to say once it is fixed it will not break again in 4 months. (Just an idea)

 

[mfgs]

I have spoke to vokera repairs and they charge £285 inc vat fixed price repair. Covering up to £450
Looking for advice is it worth me going to take the fan out and cleaning out the Venturi, condense heat exhanger .
Or is it mostly likely to be gas valve pcb related?
It’s for a friend so it will be cheaper to get vokera out if it’s a case of gas valve or pcb.. with parts and labour etc and not being 100 percent don’t want to rip him off .

Venturi fault doesn't always cause it to lock out. It just the fan keeps running or it drops out and struggles to start again. Obviously not getting to sparking stage as the APS wont operate. Normally with a partially blocked venture removing the combustion box door will allow it to light with the increased air flow.
PCB fault just causes completely random solid red lock out with no real pattern from my experience. I always start with primary NTC which you have always changed and then move to pcb as they are expensive!
Ive never had to replace a gas valve on these, and I have worked on a lot of them. Used to look after about 40 of them, each one has had a blocked venturi at some point.

 

[Piperdave22]

If it is for a friend or family member I would be more inclined to tell them to fit a new boiler. £450.00 for a Vokera call out(max) could go towards a a new one and to be fair there is nothing to say once it is fixed it will not break again in 4 months. (Just an idea)

I have already advised this as soon as I saw the boiler but they wanted to try and repair , they said it’s a max of £285 the customer will have to pay unless bill goes over £450 then they may have to pay a bit extra but will always let them know.

 

[Piperdave22]

Venturi fault doesn't always cause it to lock out. It just the fan keeps running or it drops out and struggles to start again. Obviously not getting to sparking stage as the APS wont operate. Normally with a partially blocked venture removing the combustion box door will allow it to light with the increased air flow.
PCB fault just causes completely random solid red lock out with no real pattern from my experience. I always start with primary NTC which you have always changed and then move to pcb as they are expensive!
Ive never had to replace a gas valve on these, and I have worked on a lot of them. Used to look after about 40 of them, each one has had a blocked venturi at some point.

It is randomly dropping out and struggling to start again (see vid above ) but is also sparking . Would it be worth taking out fan and cleaning Venturi?

 

[mfgs]

If its sparking, then it wont be a venturi fault as its getting past the APS stage of the ignition. Check the gas valve is opening, if not check for voltage from the board.

 

[Harvest Fields]

If its sparking, then it wont be a venturi fault as its getting past the APS stage of the ignition. Check the gas valve is opening, if not check for voltage from the board.

Said that above mate

 

[mfgs]

Said that above mate

I said it above too

 

[Harvest Fields]

I said it above too

I know.

 

[king of pipes]

Late to the party but as above gas valve first check , pcb ouch. Kop

 

[Harvest Fields]

Late to the party but as above gas valve first check , pcb ouch. Kop

That’s why I said new boiler as I remember pricey.