Carrier AQUASMART 30EX Series Installation Operation & Maintenance page 61

ERROR
TYPE OF ERROR
CODE
Error in the DC
bus voltage.
E-48
Error in the
compressor board
(Communication
between
processors)
High temperature
in the compressor
board heatsink.
E-49
Error in
communication
between the
compressor board
and main board.
High fan
E-50
current
High current on
E-51
fan board module
E-52
Motor locked out
No phase on
E-53
fan motor.
Low fan motor
E-54
speed
CONSEQUENCE
of ERROR only on
Chiller 1 (Master)
Models 380/440V:
Shuts off the Inverter
compressor
Models 220V: It only
turns off the inverter
compressor.
Models 380/440V:
Inverter compressor
won't start
If the compressor is
running, it will shut
down, returning
after the heatsink
temperature has
been reduced.
Models 220V:
Inverter compressor
won't start
If the compressor is
working, it will shut off .
Shuts off only the faulty unit, resetting
it automatically after 1 min.
Shuts off only the faulty unit, resetting
it automatically after 1 min.
Shuts off only the faulty unit, resetting
it automatically after 1 min.
Shuts off only the faulty unit, resetting
it automatically after 1 min.
Shuts off only the faulty unit, resetting
it automatically after 1 min.
CONSEQUENCE
of ERROR only
on Chiller 2
to 8 (Slaves)
Check/correct:
Board supply voltage. Connection
between board and compressor.
NA
Voltage on components - reactor and capacitor.
Reference range: 350VDC to 650VDC.
Replace the board if required.
Check/correct:
Board supply voltage. Connection on the board.
NA
Ground conditions.
Replace the board if required.
Check/correct:
Heatsink temperature (maximum 80°C).
Obstruction of airfl ow in the sink (dirt).
NA
Fan speed
If the problem is in the sensor,
replace the board.
Check/correct:
Communication between boards.
NA
Reference value: 0VDC to 5VDC.
Replace the board if required.
Check/correct:
Fan supply voltage. Damage to the propeller.
Replace the board if required.
Check/correct:
Fan supply voltage. Replace
the board if required.
Check/correct: Damaged motor.
Replace the component(s) if required.
Check/correct:
Connection between board and fan.
Voltage on components - reactor and capacitor.
Replace the board if required.
Check/correct:
Hall sensor hall connection on
motor board. Supply voltage
Check whether the condenser middle
sensor is correctly connected.
Disconnect and measure the sensor
ohmic resistance (250C - 10kΩ).
Replace the component(s) if required.
RECOMMENDED ACTIONS
61