I agree, your thermal cut out is working (this is the black thing on top of the boiler with the red button that pops out if there's an overheat situation). If it's working the button doesn't pop out. Don't worry about Ohms - just need continuity when the button is down. If you pull it up you will sever the circuit and get O/L on your DMM.
Sounds like a bad controller. If you're interested in having a look you can remove the PCB and take a look inside. Sometimes there's carbon around a bad relay or a burned out transistor/TRIAC. Possibly the transformer. Some people here on CS refurbish them. You can put out a request - heck, if it's a heating element relay you could solder a new one in yourself if that's in your repertoire.
Otherwise site sponsors Talk Coffee and ECA have controllers. I replaced a Giotto controller with a Pro El Ind. earlier this year.
Sounds like a bad controller. If you're interested in having a look you can remove the PCB and take a look inside. Sometimes there's carbon around a bad relay or a burned out transistor/TRIAC. Possibly the transformer. Some people here on CS refurbish them. You can put out a request - heck, if it's a heating element relay you could solder a new one in yourself if that's in your repertoire.
Otherwise site sponsors Talk Coffee and ECA have controllers. I replaced a Giotto controller with a Pro El Ind. earlier this year.

Comment