Riello Array AR 4000 User Manual

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.

Riello Array AR 4000 Specifications

General

Brand	Riello
Model	Array AR 4000
Category	Boiler
Language	English