FLU-Blocked Vent Switch open, Condensate Cup Full or Missing

This forum contains videos for troubleshooting issues with the HTP MC series of circulating water heaters.

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FLU-Blocked Vent Switch open, Condensate Cup Full or Missing

Postby HTP » Thu May 24, 2012 11:47 pm

Fault Code FLU - Blocked Vent Pressure Switch open, Condensate Cup Full, Condensate Cup not present

This display indicates that there is excessive flue pressure. It can also indicate that the condensate cup is full or not connected. This code will reset automatically after the problem condition is resolved.

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