Viessmann Vitodens 100 Wb1b F4

[SimonG]

Quick question. Already know the answer. Boiler keeps coming up F4. Runs for a while but then fails. It's something in the boiler? Just don't want it to be anything I missed outside the boiler before I tell the customer to get their lpg engineer in.

 

[ShaunCorbs]

Electrodes normally around £30 for the set

 

[SimonG]

Electrodes normally around £30 for the set

Cheers Shaun. I'll get the customer to get her lpg bod in. Need the heating on to help dry out the house before I can sort bathroom out.

 

[townfanjon]

As above , electrodes or blocked coni trap normally, unless it’s actually been serviced

 

[SimonG]

House been empty for 6 or 7 years. Super damp. Had it running, left it overnight and come back to f4. Swapped it to s plan. Reset it and it ran whilst I had my bait. But it went back to f4 and wouldn't reset

cheers.

I've given the owner a heads up.