Camus Hydronics DFH/W500 Installation, Operation And Service Manual page 63

Hold 63: LCI OFF (Load Control Input)
Hold 67: ILK OFF (High Limit, Gas Pressure Switch, Air Switch)
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
Alert 460: LCI lost in run
This error occurs when one of more of the boiler safety switches are in an open condition when it is to be in a closed condition
before the ignition sequence is allowed to proceed.
Flow Switch
Green
High Limit
Green
Gas Pressure Switch
Green
Air Switch
Green
Check J5-2
connector
SOLA for
24Vac signal
Gray
Check flow switch
Closed
Check blocked
flue switch
Gray
Check high limit
Gray
Low gas switch
Closed
High gas switch
Gray
Check air proving
switch
Proceed to
ignition sequence
Open
Check flow switch paddle
Open
Check vent & inlet for
obstruction
Open
Reset high limit
Open
Check inlet gas pressure
> 3" w.c.
Open
Check inlet gas pressure
< 14" w.c.
Open
Turn set screw CCW 1/2
to 1-1/2 turns
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