Hello, and hopefully someone can help with this.
I am getting alternating red/yellow lights flashing on my alpha cb24 combi and as a result no hot water or central heating. The manual indicates this is a low pressure fault, but the water pressure is reading ok on the guage and I've drained and refilled the system
I've replaced the DHW flow swich (£49!!), dismantled the flow diverter valve itself and inspected it for damaged seal/diaphragm but it seems ok and the mechanism operates freely by hand. Depressing the DHW flow switch manually has no effect.
The pump turns freely by hand so I am now beginning to suspect the primary pressure switch
Does anyone have any other ideas that may help? I'd rather not fork out for another new (unncessary) switch if possible.
Thanks very much.
jon
I am getting alternating red/yellow lights flashing on my alpha cb24 combi and as a result no hot water or central heating. The manual indicates this is a low pressure fault, but the water pressure is reading ok on the guage and I've drained and refilled the system
I've replaced the DHW flow swich (£49!!), dismantled the flow diverter valve itself and inspected it for damaged seal/diaphragm but it seems ok and the mechanism operates freely by hand. Depressing the DHW flow switch manually has no effect.
The pump turns freely by hand so I am now beginning to suspect the primary pressure switch
Does anyone have any other ideas that may help? I'd rather not fork out for another new (unncessary) switch if possible.
Thanks very much.
jon