Camus Hydronics DynaMax DMH081 - Blocked Flue Error Troubleshooting Flowchart

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Blocked Flue Error displayed on screen
This error can indicate a blocked flue or blocked intake condition, low gas pressure switch tripped (optional) or high gas pressure
switch tripped (optional). To identify the safety that is open use the continuity setting on your multimeter and go across the contacts
of the switches. The safety string is powered by DC voltage and varies between 10 to 35Vdc. The blocked flue safety string begins
at J16-4 and ends at J16-2.
Is vent and/or air intake
blocked?
YES
Clear vent and/or
air intake
termination
NO
High Gas Pressure Tripped?
YES
High gas pressure
switch (C6097B,
N/C) set to 14” w.c.
NO
YES
Check incoming
gas pressure and
reset high gas
pressure switch
Low Gas Pressure Tripped?
YES
Low gas pressure
switch (C6097A,
N/O) set to 3” w.c.
YES
Check incoming
gas pressure and
reset low gas
pressure switch
NO
Turn blocked flue switch set
screw ½ turn clockwise, until
burner stays on at high fire
Is Blocked flue switch (N/C)
closed when fan is not turning?
NO
Replace blocked flue switch
(P/N: 8021205256)
YES