45
SHUTDOWN
45
APPENDIX
APPENDIX
Error no. Error Description Checks Solutions
36 AIR_DAMPER_LOCKING Air Damper feedback is not
received when the relative
output is closed for the
fourth time.
37 FLUE_PRESSURE_LOCKING Flue pressure switch is
closed for the fourth time.
BLOCKING ERRORS
Error no. Error Description Checks Solutions
100 WD_ERROR_RAM Internal software error
Replace the power control
board
101 WD_ERROR_ROM Internal software error
Replace the power control
board
102 WD_ERROR_STACK Internal software error
Replace the power control
board
103 WD_ERROR_REGISTER Internal software error
Replace the power control
board
104 WD_ERROR_XRL Internal software error
Replace the power control
board
105 HIGH_TEMP_ERROR
Supply temperature exceeds
110°C (230°F) with gas valve
closed
a- Check the pump to verify
the ow circulation;
b- Check if the valves on
hydraulic circuit are open;
c- Check the supply tem-
perature sensor.
a- Change the pump or
restart it;
b- Open the valves on hy-
draulic circuit;
c- Verify that the tempera-
ture sensor has the correct
resistance values. If values
are incorrect sensor must be
replaced.
106 REFHI_TOO_HIGH Internal software error
Replace the power control
board
107 REFHI_TOO_LOW Internal software error
Replace the power control
board
108 REFLO_TOO_HIGH Internal software error
Replace the power control
board
109 REFLO_TOO_LOW Internal software error
Replace the power control
board
110 REFHI2_TOO_HIGH Internal software error
Replace the power control
board
111 REFHI2_TOO_LOW Internal software error
Replace the power control
board
112 REFLO2_TOO_HIGH Internal software error
Replace the power control
board
113 REFLO2_TOO_LOW Internal software error
Replace the power control
board
114 FALSE_FLAME
Flame is detected in a state
in which no ame is allowed
to be seen
Replace the power control
board
115 LOW_WATER_PRESSURE_ERROR Low water pressure error
116
LOW_WATER_PRESSURE_SEN-
SOR
Low water pressure
117 BLOCKED_DRAIN Blocked drain switch is active
118 WD_COMM_ERROR
Watchdog communication
error
Replace the power control
board
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