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Errors


Boiler type UFT-100W

Error code Er94

Cause:

Exhaust Sensor detects Vent Temperature is Greater than 190ºF (88ºC)

Solution:

This Error Code will go away when the condition is remedied.
If Error happens again:

- Check if dip switch High Fire setting is ON. Switches 6 and 7 should be OFF for normal operation.
- Check exhaust temperature sensor. Ensure connections are secure.
- Check sensor resistance. If resistance is zero, replace the sensor.
- Check exhaust vent for blockage.
- If the problem persists, replace the control.
- If the problem persists, replace the heat exchanger.