prima 40f Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[allanspittal]

hi have been having problems with potterton prima 40f,have maintanance contract but engineers cant seem to fix problem,have had no heating or hot water for 3 weeks on and off.this morning when switched on sparks and smoke seem to come from pcb board,phoned engineer told them,they phoned back saying have orderd new wires,i am 99.9% sure its the part marked 407677 that is at fault,why cant they see this or are they pulling a fast one,any advice would be welcome...

[htg engineer]

407677 is the manufacturers part number for the PCB.

If there was sparks coming from the PCB then it's probably the PCB that needs replacing - But - there are other parts that can blow the PCB for example fan, gas valve etc.

So sticking in a new PCB without knowing what to check and look for - you could end up blowing another PCB.

You'd be best getting a Heating Engineer to take a look - it's up to you if you use the same one's as before.