generous Posted June 7, 2016 Report Share Posted June 7, 2016 My heater has been reporting HL1 error codes. I need to replace the High Limit #1 switch. Can anyone confirm that I have the correct switch identified in the picture below? Thanks --curtis Quote Link to comment Share on other sites More sharing options...
Bugman1400 Posted June 9, 2016 Report Share Posted June 9, 2016 It appears that you have located the correct wires. However, before you replace the sensors, remove the wires and reseat them to scrape of any corrosion that may be preventing an accurate signal to the controller. If you still get the error code, then try using a jumper to bypass one sensor at a time. This will allow you figure out which one is the culprit. It will also indicate that the problem is with the sensor and not in the wiring or controller. Good Luck! Quote Link to comment Share on other sites More sharing options...
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