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Errors


Boiler type PureFire PF-850

Error code E02

Cause:

Return sensor not connected.

- Return sensor circuit is open.

Solution:

- Be sure sensor is plugged in. 
- Check continuity in both harness leads. 
- Temporarily connect the harness to another sensor to determine if the error is cleared. If so, this indicates a defective sensor. 
- Read the sensor temperature values in the “User Menu” under “Status”. 14°F indicates an open circuit. 

Note: The component with the red connector is the high limit switch not a sensor.