Solar hasn't been working consistently. Solar temp in the ET was erratic going from a very low temp like 9* to a very hot temp like 255*.
Switched the wires for the air and solar on the ET and the odd temperature followed to the solar thermistor, leading me to believe the issue is the thermistor rather than the circuit board.
Bought and installed 2 new sensors. The first one read wrong immediately so I returned it. The second one read correctly for a week and today it's back to being erratic.
The thermistor itself is not touching anything on the roof, I have it suspended in the air.
What is the next step?
Switched the wires for the air and solar on the ET and the odd temperature followed to the solar thermistor, leading me to believe the issue is the thermistor rather than the circuit board.
Bought and installed 2 new sensors. The first one read wrong immediately so I returned it. The second one read correctly for a week and today it's back to being erratic.
The thermistor itself is not touching anything on the roof, I have it suspended in the air.
What is the next step?