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BLOD

Plumbers Arms member
Plumber
Gas Engineer
Jan 2, 2008
1,308
286
83
Hants
Member Type
Heating Engineer (Has GSR)
Went to one today,

With a call for heat the flowswitch makes but the fan doesnt start, leds then light up indicating fan lockout quickly followed by ignition electrode starts sparking for a few seconds.

I put a spare fan in and got the same, checked the wiring continuity between fan & pcb and it was ok so figured it's the board.
Put a spare board in and then got all 3 leds lit constantly even while pressing the reset button.
Put the original board back in and it went back to the original fan lockout fault followed by ignition electrode sparking.

I guess it's possible I've got 2 duff boards or am I missing something obvious ?

Any advice gratefully received
 
the fuse on both boards was ok - what I can't work out is why would I get a different error code from each board ?
 

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