prima 40f


Postby allanspittal » Wed Feb 06, 2008 3:33 pm

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...
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Postby htg engineer » Wed Feb 06, 2008 9:37 pm

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.
htg engineer
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Joined: Tue May 22, 2007 5:22 pm


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