Replacing High Limit Switch (limit thermostat)

Replacing High Limit Switch (limit thermostat)

Tools Needed: #2 screwdriver

Time Needed: Less than 10 minutes

Remove top front panel




Remove wires from high limit switch


Remove the high limit switch. The high limit switch is a brass fitting that screws into stainless steel. It is very fragile and can break easily. Attempt removing with your fingers, if that does not work, use a wrench. 



Replace the new high limit. DO NOT USE A TOOL TO TIGHTEN. the high limit works by making contact with the boiler. It only needs to be finger tip tight. Using a wrench will damage the part and potentially break it. 

Replace all the parts and test. 

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