The inside of the thermostate dial says M215 (orS)P and then 1.5 HP 120/240 17A there are two units----one is twice the KWH as the other I believe. Can you help me? I need to buy 2 new thermostats.
The knob in the center of them is binding up and it is breaking the dial where the knob fits into it. Can I lubricate the center piece or do anything except replace them?