Biasi Garda HE M96.28SM/B2

[Aljay]

Above boiler working perfectly yesterday morning packed up in the evening (the coldest day we've had for years!) no C/H or hot water. Managed to get someone to have a quick look this morning, helpful but not completely sure.
All fuses checked OK
No supply to fan or pump, checked Safety Thermostat and said that was OK.
Operation lights showing Faulty primary circuit (obvious with no pump running)
Suggests PCB defective but not sure if it could be anything else and reluctant to advise purchasing "very expensive" PCB.
Any body out there with any other ideas to try before new PCB?

 

[adlplumbing]

get britsih gas engineer out it fixed fee and cheeper than i can buy pcb for but ignore their sale manship

 

[Aljay]

Thanks aldplumbing
Tried BG but they were quoting a wait of ten days and in this weather I couldn't wait. Managed to get a board by yesterday morning so warm by lunch time.