Riello Array AR 800 Installation And Operation Manual page 71

APPENDIX
ERROR CHECKING CYCLE
Stand-by
Boiler Min/Max
Gas pressure
Locking error
NO
switches are
closed?
YES
Boiler Blocked
Blocking
NO
Flue pressure
switch is closed
YES
Boiler Water
Blocking
NO
pressure switch is
closed?
YES
Module High limit
NO Locking error
sensor is closed?
YES
Supply/return/
Blocking
NO
Flue sensor are
OK?
YES
Module LWCO
NO Locking error
detects water?
YES
Flue/condensate
NO Locking error
pressure sitch
closed?
YES
YES
State = burn?
71 71
error
error
error
Flue gas Temp
Burner on
above the max_
min output
flue_gas_temp?
SHUTDOWN APPENDIX
Locking error