I have replaced the stack flue sensor and the pool ran for 1 1/2 hrs and heated the spa to 100 degrees and then showed the E05 error code.
Pentair Master Temp 400 Heater
- Thread starter jhib
- Start date
Exhaust Gas Temperature
While running, press and hold the On button to display the exhaust temperature (Older Models).
The new models use the Menu to get the SFS.
Here is what the normal exhaust temperature should be:
Below 250 degrees...very low
250 to 290 ..................low
290 to 350.................acceptable
350 to 480 ..................high
Above 480...................error/shutdown.
Note: HD models can be up to 75 degrees higher.
HD models use a cupro nickel exchanger and the efficiency is slightly lower resulting in less heat transfer and more waste heat.
If the exhaust gas temperature is higher then normal then water may be bypassing the heat exchanger through a broken bypass valve.
If you hold down the "pool on" button, it stays on 80, then flashes to 40, then back to 80, then the 80/40 reading and E05 indicate that the board is not getting a reading from the sensor.
It's usually a bad sensor or damaged wires.
www.troublefreepool.com
While running, press and hold the On button to display the exhaust temperature (Older Models).
The new models use the Menu to get the SFS.
Here is what the normal exhaust temperature should be:
Below 250 degrees...very low
250 to 290 ..................low
290 to 350.................acceptable
350 to 480 ..................high
Above 480...................error/shutdown.
Note: HD models can be up to 75 degrees higher.
HD models use a cupro nickel exchanger and the efficiency is slightly lower resulting in less heat transfer and more waste heat.
If the exhaust gas temperature is higher then normal then water may be bypassing the heat exchanger through a broken bypass valve.
If you hold down the "pool on" button, it stays on 80, then flashes to 40, then back to 80, then the 80/40 reading and E05 indicate that the board is not getting a reading from the sensor.
It's usually a bad sensor or damaged wires.
Pentair MasterTemp Heaters - Further Reading
www.troublefreepool.com
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