How to know if thermocouple is bad - signs and fixes
If you're staring at a cold water heater or a furnace that won't fire up, learning how to know if thermocouple is bad is basically step one in your troubleshooting journey. It's one of those tiny, inexpensive parts that carries a massive amount of responsibility. When it works, you don't even think about it. When it fails, you're suddenly taking a freezing cold shower or wearing three sweaters in your own living room. ...