Hitachi RCI-3.0UNE1NH - Outdoor Fault Code Table

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
2.2 Fault codes
The following is the fault code table of outdoor.
Sheet 1 Outdoor Fault code
Fault
code
Fault Description Possible Reason of Abnormality How to Deal With Remarks
1
Outdoor ambient
temperature
sensor fault
1.The outdoor ambient temperature
sensor connect loose;
2.The outdoor ambient temperature
sensor is failure;
3.The sampling circuit is failure
1.Reconnect the outdoor ambient
temperature sensor;
2.Replace the outdoor ambient
temperature sensor omponents;
3.Replace the outdoor control board
components.
2
Outdoor coil
temperature
sensor fault
1.The outdoor coil temperature sensor
connect loose;
2.The outdoor coil temperature sensor is
failure;
3.The sampling circuit is failure
1.Reconnect the outdoor coil
temperature sensor;
2.Replace the outdoor coil temperature
sensor components;
3.Replace the outdoor control board
components.
3
The unit
over-current turn
off fault
1.Control board current sampling circuit
is failure;
2.The current is over high because of the
supply voltage is too low;
3.The compressor is blocked;
4. Overload in cooling mode;
5.Overload in heating mode.
1. Replace the electrical control
board components;
2. Normally protection;
3. Replace the compressor;
4. Please see the Note 3;
5. Please see the Note 4.
4 EEprom Data error
1.EE components is failure; 2.EE
components control circuit failure;
3.EE components insert incorrect
1.Replace the EE components;
2.Replace the outdoor control
board components;
3.Reassembly the EE components.
5
Cooling freezing
protection(the
indoor coil
temperature is too
low) or heating
overload(indoor
coil temperature is
too high)
1.The indoor unit can not blow air
normally;
2.The room temperature is too low in
cooling mode or the room temperature
is too high in heating;
3.The filter is dirty;
4.The duct resistance is too high to
result in low air flow;
5.The setting fan speed is too low;
6. The indoor unit is not standard
installed, air inlet is too near with air
outlet .
1.Check the indoor fan, indoor fan motor
and evaporator whether normally;
2. Normally protection;
3.Clean the filter;
4.Check the volume control
valve,duct length etc;
5.Set the speed with high speed;
6.Reinstall the indoor unit refer to
the user manual to change the
distance between the indoor unit and
the wall or ceiling.
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