Hi. My master temp 400 is showing an E01 error. I replaced the thermistor but error code is still coming up. Is the next step a bad control board? Is there a way to test the board to make sure it is bad before I purchase a new one? Thanks
Mastertemp 400 control board
- Thread starter hallco
- Start date
- Jul 21, 2013
- 65,852
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Put a 10K resistor connected to the temperature sensor wires. If the heater reads 76F then the sensor is bad.
If you don't get a good temperature then check the wires for critters chewing on it.
If you don't get a good temperature then check the wires for critters chewing on it.