My boiler has been working intermittently even when the hot water tank is full of cold water. My trouble-shooting led me to believe the thermostat in the boiler is what's cutting out the boiler. The trouble is - why does it do that?
I guess two possible reasons, either the thermostat is bad, or water is not circulated to the hot water tank, therefore the overheated boiler.
I listened at the Grundfos UPS 15 50 circulator, and could hear very quiet sound (similar to the electric noise of a huge transformer but much quieter). I am not sure if it is working. Or, it could be working but the Siemens 3PMP V22 valve doesn't open, so no circulation?
The pipe is hot, but the tank is cold. So something is wrong here. How do I know if the circulator or the motorised valve is working?
I guess two possible reasons, either the thermostat is bad, or water is not circulated to the hot water tank, therefore the overheated boiler.
I listened at the Grundfos UPS 15 50 circulator, and could hear very quiet sound (similar to the electric noise of a huge transformer but much quieter). I am not sure if it is working. Or, it could be working but the Siemens 3PMP V22 valve doesn't open, so no circulation?
The pipe is hot, but the tank is cold. So something is wrong here. How do I know if the circulator or the motorised valve is working?