Originally Posted by jtintx
I don't know what spring switch is but here is the pic you asked for. I included one closer up also.
Short answer, nope not a spring switch. Its an electronic t-stat.
Really out of my realm of knowledge.
Sorry. I did a quick Google search of your model and it gave me the voltage readings that should be present at the T-stat. All of which matched what you reported. I do know that the electronic ones can go bad. They have a temp sensor eye the goes bad. So that may be your issue but the the electronic ones are a little harder to diagnose.
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