Biasi Riva Compact combi boiler

[Jacko]

Is it a single board or twin board ?

Single green board

 

[AMGasServices]

Do you have any lights flashing? Could be a weak pump or PCB

 

[Jacko]

Do you have any lights flashing? Could be a weak pump or PCB

When the pump stops after a demand the lights flash indicating a primary circuit or no flow fault. I assume if it was a weak pump the pin wouldn’t come out fully, this pin comes out fully and that happens even with the power isolated???

 

[AMGasServices]

I’ve had it on an mini where the pin comes out fully it doesn’t have the force to make the micro switch.

If not ring technical department on Monday.

 

[bill577]

I would check for a blockage on one of the connecting pipes, try using a magnet around the pipes to the flow switch.

 

[Jacko]

I would check for a blockage on one of the connecting pipes, try using a magnet around the pipes to the flow switch.

Hello all thanks for your help,I changed the complete flow manifold and it’s all working now. The fault was limescale build up in the manifold stopping the pin retracting. There are no connecting pipes to this boiler, once the pressure of the boiler stops the pin should retract.