Hi, this is the problem.
Ariston SX20 Eurocombi, c/h working fine but now no running hot water.
Boiler does not change over modes when hot tap is turned on from c/h to providing hot water.
If heating is off and burner unlit, when tap is turned on, burner does not ignite.
BUT works every now and then and when it is working if you turn the tap off it doesn't kick back in. eg works once every ten times.
The water diaphragm was last replaced in 2002 as it was perished.
Not relating to this problem, I have replaced the pump and the main circuit flow switch within the past 6 months on this unit. Flow switch contacts are working.
I'm thinking of first replacing the water divertor diaphragm and giving it a clean up.
Would appreciate any thoughts.
Thanks in advance
dave
Ariston SX20 Eurocombi, c/h working fine but now no running hot water.
Boiler does not change over modes when hot tap is turned on from c/h to providing hot water.
If heating is off and burner unlit, when tap is turned on, burner does not ignite.
BUT works every now and then and when it is working if you turn the tap off it doesn't kick back in. eg works once every ten times.
The water diaphragm was last replaced in 2002 as it was perished.
Not relating to this problem, I have replaced the pump and the main circuit flow switch within the past 6 months on this unit. Flow switch contacts are working.
I'm thinking of first replacing the water divertor diaphragm and giving it a clean up.
Would appreciate any thoughts.
Thanks in advance
dave