slyswife Posted January 7 Report Posted January 7 We love our mastertemp 400 and have become very proficient at being happy parts replacers to keep it running. This time rather than buy switches one by one, I bought an inexpensive aftermarket kit from Amazon that had all the switches. I immediately started with the pesky HLS. Once the old one was removed, I noticed that the kit contained two identical switches--neither marked with temperatures like the ones currently in the heater. When I questioned the seller, they told me to "rest assured, the switches are interchangeable". Is it safe to use unmarked switches in place of two different ones that are supposed to be 135 and 140 degrees? Pretty sure that I should send the kit back? Quote
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