my boiler no longer produces hot water although the heating side is working fine.
I replaced the water valve and the reversing valve but nothing helps, when the water is drawn the boiler does not trigger, if I manually use the microswitch it works.
Do you have an idea ?
I don't know how exactly the DHW flow rate is detected on gas boilers, but there is necessarily a sensor.
Maybe a differential pressure sensor?
Is that what you call water valve? If yes look at the multimeter if it works and if so look where it is connected (a relay maybe?)
For the water valve, you can see it on the following link
https://www.esc-grossiste.fr/boutique/s ... -23-e.html
danpel wrote:I did not find any detector as explained, here is the file and thank you for your help
Ah yes I do believe that it is the water valve which fulfills this role: a membrane detects the pressure difference and regulates the gas flow.
Are you sure the valve that was changed is working?
If not yes also checks the DHW thermostat?
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