Hitachi RCI-3.0UNE1NH - Drive Fault Codes (4.0-6.5 HP)

2
2
.
.
T
T
R
R
O
O
U
U
B
B
L
L
E
E
S
S
H
H
O
O
O
O
T
T
I
I
N
N
G
G
Fault
code
Fault Description Possible Reason of Abnormality How to Deal With Remarks
83
Evaporator
Middle
Temperature
Sensor Fault
1.The cable of the coil temperature
sensor of the evaporator is failure;
2. The coil temperature sensor of the
evaporator is failure;
3. The sampling circuit is abnormally
1. Reconnect the cable of the coil
temperature sensor of the
evaporator;
2. Replace the coil temperature
sensor of the evaporator;
3. Replace the indoor control board.
FE
(254)
Communication
between main
control board
&Wiring remote
controller Fault
（display on
wiring remote
controller）
1. The wiring between the wiring
controller to the indoor control board
connect loose;
2. The sequence of the wiring between
the wiring controller to the indoor
control board is wrong;
3. The wiring between the wiring
controller to the indoor control board
is failure;
4.The wiring controller is failure;
5. The indoor control board is
abnormally
1.Reconnect the wiring between the
wiring controller to the indoor control
board;
2.Replace the wiring between the
wiring controller to the indoor control
board;
3.Replace the wiring between the
wiring controller to the indoor control
board;
4. Replace the wiring controller;
5. Replace the indoor control board
ER
Communication
between main
control board
&display board
Fault（displays on
display board）
1.The wiring between the display board
to the indoor control board connect
loose;
2.The sequence of the wiring between
the display board to the indoor
control board is wrong;
3.The wiring between the display board
to the indoor control board is failure;
4. The display board is failure;
5. The indoor control board is failure.
1. Reconnect the between the display
board to the indoor control board;
2. Replace the wiring between the
display board to the indoor control
board;
3. Replace the wiring between the
display board to the indoor control
board;
4. Replace the display board;
5. Replace the indoor control board.
NOTE 1:
If the indoor unit can not turn on or the indoor unit turn off itself after 30s, at the same time the unit do
not display the fault code, please check the fire and the socket of the control board.
Note 2:
If the indoor unit display the 75,76,77,78 fault code after you turn on the unit, please check the TEST
seat of the indoor control board or the TEST detection circuit whether exists short circuit.
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