50
SHUTDOWN
50
APPENDIX
APPENDIX
Error no. Error Description Checks Solutions
113 REFLO2_TOO_LOW Internal software error
Control board replacement
114 FALSE_FLAME
Flame is detected in a state in which no
ame is allowed to be seen
Control board replacement
115 LOW_WATER_PRESSURE_ERROR Low water pressure error
116 LOW_WATER_PRESSURE_SENSOR Low water pressure
117 BLOCKED_DRAIN Blocked drain switch is active
118 WD_COMM_ERROR Watchdog communication error Replace the power control board
119 RETURN_OPEN Return sensor open
a- Check the integrity of the
wire connections;
b- Check the return
temperature sensor.
a- If the wiring is damaged, replace it;
b- Verify that the temperature sensor
has t
he correct resistance values. If
values are incorrect sensor must be
replaced.
120 SUPPLY_OPEN Supply sensor open
a- Check the integrity of the
wire connections;
b- Check the supply
temper
ature sensor.
a- If the wiring is damaged, replace it;
b- Verify that the temperature sensor
has the correct resistance values. If
values are incorrect sensor must be
replaced.
121 SUPPLY2_OPEN Supply2 sensor open
122 DHW_OPEN DHW sensor open
a- Check the integrity of the
wire connections;
b- Check the DHW
temper
ature sensor.
a- If the wiring is damaged, replace it;
b- Verify that the temperature sensor
has the correct resistance values. If
values are incorrect sensor must be
replaced.
123 FLUE_OPEN Flue sensor open
124 FLUE2_OPEN Flue2 sensor open
125 OUTDOOR_OPEN Outdoor sensor open
a- Check the integrity of the
wire connections;
b- Check the Outdoor
temper
ature sensor.
a- If the wiring is damaged, replace it;
b- Verify that the temperature sensor
has the correct resistance values. If
values are incorrect sensor must be
replaced.
126 RETURN_SHORTED Return sensor shorted
a- Check the integrity of the
wire connections;
b- Check the return
temper
ature sensor.
a- If the wiring is damaged, replace it;
b- Verify that the temperature sensor
has the correct resistance values. If
values are incorrect sensor must be
replaced.
127 SUPPLY_SHORTED Supply sensor shorted
a- Check the integrity of the
wire connections;
b- Check the supply
temper
ature sensor.
a- If the wiring is damaged, replace it;
b- Verify that the temperature sensor
has the correct resistance values. If
values are incorrect sensor must be
replaced.
128 SUPPLY2_SHORTED Supply2 sensor shorted
129 DHW_SHORTED DHW sensor shorted
a- Check the integrity of the
wire connections;
b- Check the DHW
temper
ature sensor.
a- If the wiring is damaged, replace it;
b- Verify that the temperature sensor
has the correct resistance values. If
values are incorrect sensor must be
replaced.
130 FLUE_SHORTED Flue sensor shorted
a- Check the integrity of the
wire connections;
b- Check the Outdoor
temper
ature sensor.
a- If the wiring is damaged, replace it;
b- Verify that the temperature sensor
has the correct resistance values. If
values are incorrect sensor must be
replaced.
131 FLUE2_SHORTED Flue2 sensor shorted
132 OUTDOOR_SHORTED Outdoor sensor shorted
a- Check the integrity of the
wire connections;
b- Check the Outdoor
temper
ature sensor.
a- If the wiring is damaged, replace it;
b- Verify that the temperature sensor
has the correct resistance values. If
values are incorrect sensor must be
replaced.
133 RESET_BUTTON_ERROR Too many resets in a short time period
135 T_EXCHANGE_BLOCK_ERROR Exchange temperature exceeded 90°C
136 T_CHIMNEY_OPEN Chimney sensor open
137 T_EXCHANGE1_OPEN Exchange 1 sensor open
138 T_EXCHANGE2_OPEN Exchange 2 sensor open
139 T_SELECTION1_OPEN Selection 1 sensor open
140 T_SELECTION2_OPEN Selection 2 sensor open