Can anyone please help advise me with a problem I’m having with the c/h on my Baxi 105e combi?
With my limited experience and by following the fault diagnosis from the Baxi manual, the symptoms I’m seeing are pointing towards either a faulty clock or maybe PCB.
There appears to be no demand for the c/h. i.e There is no warning Led (triangle within circle) pump o.k. I have tried shorting out my thermostat on terminals 1 & 2. I’m not sure how to simulate the clock fitted to terminal block A4.
Over the last couple of nights I have managed to get the c/h to work for limited periods over night.
The way in which I’ve gone about this is by turning off the power on the dial plus the incoming spur followed by disconnecting the connector to A4. After reversing this process the c/h has struck up in the correct way but not every time. (This led me to believe maybe a clock problem or dry joint on the PCB)!!
Tonight however I have only gone as far as isolating the power on the spur, after turning off the dial. This appears to have temporarily cured the problem.
Can anybody please shed any light on the fault, or tell me how to simulate the clock on A4 after disconnection as I assume disconnecting the connector by its self leaves an o/c.
Note: After reading one of the forums I am now wandering about if the dhw tap symbol is showing and incorrectly making out I am using the dhw. As the c/h is working temporarily at the moment, I can not confirm this until it next goes wrong maybe tomorrow. Although I have recently (3 weeks ago) changed the dhw diaphragm which had torn causing hot water flow problems
Any help would be greatly appreciated.
With my limited experience and by following the fault diagnosis from the Baxi manual, the symptoms I’m seeing are pointing towards either a faulty clock or maybe PCB.
There appears to be no demand for the c/h. i.e There is no warning Led (triangle within circle) pump o.k. I have tried shorting out my thermostat on terminals 1 & 2. I’m not sure how to simulate the clock fitted to terminal block A4.
Over the last couple of nights I have managed to get the c/h to work for limited periods over night.
The way in which I’ve gone about this is by turning off the power on the dial plus the incoming spur followed by disconnecting the connector to A4. After reversing this process the c/h has struck up in the correct way but not every time. (This led me to believe maybe a clock problem or dry joint on the PCB)!!
Tonight however I have only gone as far as isolating the power on the spur, after turning off the dial. This appears to have temporarily cured the problem.
Can anybody please shed any light on the fault, or tell me how to simulate the clock on A4 after disconnection as I assume disconnecting the connector by its self leaves an o/c.
Note: After reading one of the forums I am now wandering about if the dhw tap symbol is showing and incorrectly making out I am using the dhw. As the c/h is working temporarily at the moment, I can not confirm this until it next goes wrong maybe tomorrow. Although I have recently (3 weeks ago) changed the dhw diaphragm which had torn causing hot water flow problems
Any help would be greatly appreciated.