Hitachi RCI-3.0UNE1NH - Refrigerant System Test Flow

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
Sheet 6 Drive Fault code (4.0/5.0/6.0/6.5HP)
Fault
code
Fault Description
Possible Reason of Abnormality
How to Deal With
1
Q axis current
detection, step out of
failure
1. compressor wire connect not well;
2. Bad driver board components;
3. Compressor start load is too large;
4.Compressor demagnetization;
5.Compressor oil shortage, serious
wear of crankshaft.;
6.The compressor insulation fault
1. Check compressor wire;
2. Change driver board ;
3.Turn on the machine after pressure
balance again;
4. Change Compressor;
5. Change the Compressor;
6. Change the Compressor.
2
Phase current
detection, out of step
1.Compressor voltage default phase;
2.Bad driver board components;
3.The compressor insulation fault
1.Check compressor wire connection;
2.Change the driver board;
3.Change the Compressor.
3
Initialization, phase
current imbalance
Bad driver board components. Change driver board .
4
Speed estimation, step
out of failure
1.Bad driver board components;
2.Compressor shaft clamping;
3.The compressor insulation fault.
1.Change driver board ;
2.Change the Compressor ;
3.Change the Compressor .
5 IPM FO output fault
1.System overload or current
overload.
2.Driver board fault;
3. Compressor oil shortage,serious
wear of crankshaft;
4.The compressor insulation fault.
1.Check the air-conditioner system;
2.Change the driver board;
3.Change the Compressor;
4. Change the Compressor.
6
Communication
between driver board
and control board fault
1.Communication wire connect not
well;
2.Driver board fault;
3.Control board fault;
1.Check compressor wire connect.
2.Change the driver board;
3.Change the control board ;
7
AC voltage,overload
voltage
1.Supply voltage input too high or too
low;
2.Driver board fault;
1.Check power supply;
2.Change the driver board;
8
DC voltage,overload
voltage
1.Supply voltage input too high ;
2.Driver board fault;
1.Check power supply;
2.Change the driver board;
9 AC voltage imbalance Driver board fault; Change the driver board;
10
The PFC current
detection circuit fault
before compressor is
ON
Bad driver board components; Change the driver board
11
AC voltage supply in
outrange
1.Power supply abnormal, power
frequency out of range;
2.Driver board fault;
1.Check the system;
2.Change the driver board;
12
Products of
single-phase PFC
over-current, FO
output low level
1.System overload, current too large;
2.Driver board fault;
3.PFC fault.
1.Check the system;
2.Change the driver board;
3.Change PFC.
Inverter over current
(3-phase power supply
air conditioners)
1.System overload, current too large;
2.Driver board fault;
3.Compressor oil shortage, serious
wear of crankshaft;
4.The compressor insulation fault.
1.Check the system;
2.Change the driver board;
3.Change the Compressor;
4.Change the Compressor.
13 Inverter over current
1.System overload, current too large;
2.Driver board fault;
3.Compressor oil shortage,serious
wear of crankshaft;
4.The compressor insulation fault.
1.Check the system;
2.Change the driver board;
3.Change the Compressor;
4.Change the Compressor.
14
PFC over
current(single-phase
air-conditioner)
1.System overload, current too large;
2.Driver board fault;
3.PFC fault.
1.Check the system;
2.Change the driver board;
3.Change PFC.
Phase imbalance or
phase lacks or the
instantaneous power
failure (only for
3-phase power supply
air conditioners)
1.3-Phase voltage imbalance;
2.The 3-phase power supply phase
lost;
3.Power supply wiring wrong;
4.Driver board fault.
1,Check the power supply;
2.Check the power supply;
3.Check the power
supply
wiring
connect;
4.Change the driver board.
15
The instantaneous
power failure detection
1.The power supply is not stable ;
2.The instantaneous power failure ;
3.Driver board fault;
1.Check the power supply.
2.Not fault.
3.Change the driver board;
29