Pentair Heater, E01. Replaced thermister...no change

[Tom Minahan]

Can't seem to diagnosis this one. Changed the thermister for Error 01 (found on prior thread, THANK YOU), but next start up: tripped a breaker....reset and now the error is back...
Below are pictures of the back of the control panel (LED 7 and LED 11 on)
and a screen shots of a start up video
Where do I go?

 

[ajw22]

Where did you get the replacement thermistor from? Is it a genuine Pentair part?

Did you test the thermistor using a multimeter?

Temperature Sensors - Further Reading

www.troublefreepool.com

Did you check the continuity of the wiring from the thermistor to the main board?

Connect a 10K resistor to the board where the thermistor wires connect. If you still get the E01 then the board is defective.

Pentair MasterTemp Heaters - Further Reading

www.troublefreepool.com

 

[JamesW]

The following are the LEDs:

1.....PS (Pressure Switch)
2.....HLS (High Limit Switch)
3.....SFS (Stack Flue Sensor)
4.....AFS (Air Flow Switch)
5.....AGS (Automatic Gas Shutoff).
6.....Service System
7.....Thermistor
8.....Heating
9.....Pool On
10...Spa On
11...Service Heater.

Pentair MasterTemp Heaters - Further Reading

www.troublefreepool.com

It might be a bad thermistor, bad wiring or maybe a bad circuit board.