The boiler has no fault lights on and the pump and ch press. diff.valve is just constantly cycling on/off?
I've checked power to pump and this shows 0v to 240v when it coinsides with the cycling on/off.
No power to gas valve, fan, or pcb
Obviously power coming in on terminal to pcb but can hear relays cycling on/offn also.
Various tests all fall back to pcb, have checked relay resistances and they are ok.?
Stats are also correct resistances
Do you know any other tests that i can do to check actual components on pcb? House getting knocked down in 6 month so could really do with a cheap fix.
Yea, i know it's pcb 95% but still just willing it not 2 b
I've checked power to pump and this shows 0v to 240v when it coinsides with the cycling on/off.
No power to gas valve, fan, or pcb
Obviously power coming in on terminal to pcb but can hear relays cycling on/offn also.
Various tests all fall back to pcb, have checked relay resistances and they are ok.?
Stats are also correct resistances
Do you know any other tests that i can do to check actual components on pcb? House getting knocked down in 6 month so could really do with a cheap fix.
Yea, i know it's pcb 95% but still just willing it not 2 b
