Camus Hydronics DynaMax DMH201 Installation And Service Manual page 51

Hold 63: LCI OFF (Flow Switch, LWCO, Blocked Flue Switch)
Hold 67: ILK OFF (Gas Pressure Switch, High Limit)
Alert 303: Abnormal Recycle: ILK off during drive to Purge
Alert 304: Abnormal Recycle: ILK off during Measured purge time
Alert 305: Abnormal Recycle: ILK off during Drive to Pre-igntion
Alert 306, 307: Abnormal Recycle: ILK off during Pre-ignition
Alert 308: Abnormal Recycle: ILK off during Main Flame
Alert 309: Abnormal Recycle: ILK off during Ignition Period
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 set the multimeter to Vac and measure the voltage from one contact to
ground. The contacts produce a 24Vac when the circuit is closed.
Is Blocked flue switch (N/C)
closed when fan is not turning?
YES
Is vent and/or air intake
blocked?
NO
High Gas Pressure Tripped?
NO
Low Gas Pressure Tripped?
NO
Turn blocked flue switch set
screw 1-2 turns clockwise,
until burner stays on at high
fire
NO
Replace blocked flue switch
(P/N: 8021205256)
YES
Clear vent and/or
air intake
termination
High gas pressure
YES
switch (C6097B,
N/C) set to 14" w.c.
Low gas pressure
YES
switch (C6097A,
N/O) set to 3" w.c.
Check incoming
YES
gas pressure and
reset high gas
pressure switch
Check incoming
YES
gas pressure and
reset low gas
pressure switch
43