Going to this prob tomorrow, guy says the heating is working fine but when he uses HW its runs for briefly then cuts out, if he resets it, it fires again for a bit before cutting out. Suspect it could be blocked dhw exchanger, is this common? The jobs far out of town, so was wondering if it would be worth taking any sensors/thermistors? Also noticed in MI's the cb 28x has no dhw sensor, just a flow regulator, Could that be a possible prob?
Appreciate any help
Ally
Appreciate any help
Ally
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