This is our 4th summer with our pool – we have a max-e-therm 200 heater and the Service Light has come on. The heater does reach the desired temperature, but once it does, the heater keeps cycling on and off. We think it may be a faulty thermostat as there was a bit of corrosion on it. We would like to change the thermostat to see if this fixes the problem. Does this sound like a reasonable solution? Is there anything else we can try? Or is the only option a service call?
Much appreciated, Karen