Riello Array AR 3000, Installation And Operation Manual

Page: 48 / 72

48
SHUTDOWN
48
APPENDIX
Error no. Error Description Checks Solutions
115 LOW_WATER_PRESSURE_ERROR Low water pressure error
a- Check system water
pressure.
b- Ensure that it is above
min recommended pressure
(7.5PSI).
c- Check the value of the
reading of this sensor in the
info screen. If the value is
not in line with the system
pressure check the sensor.
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 the
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
temperature 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.
122 DHW_OPEN DHW sensor open
a- Check the integrity of the
wire connections;
b- Check the DHW
temperature 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
125 OUTDOOR_OPEN Outdoor sensor open
a- Check the integrity of the
wire connections;
b- Check the Outdoor
temperature 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
temperature 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
temperature 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.