
14
.
TROUBLESHOOTING
Table 4 Drive Fault Code
(AMW3-24U4RAA/27K/36K)
66
Fault
code
Fault description
Possible reasons for abnormality
How to deal with
1
Q axis current
detection,
failure in
drive control
1. C
ompressor wire
is not
connect
ed
properly
;
2.
Bad driver board components;
3.
Compressor start load is too large;
4.
Compressor demagnetization;
5.
Compress or oil
shortage serious
wear of crankshaft;
6.
The compressor insulation
fails.
1.
Check the compressor wire;
2.
Change the driver board ;
3.
Turn
on
the unit after
the
pressure
is
balance
d
again;
4.
Change the Compressor;
5.
Change the Compressor;
6.
Change the Compressor.
2
Phase current detection,
failure in drive control
1.
Compressor voltage default phase;
2.
Bad driver board components;
3.
The compressor insulation fault
.
1.Check the compressor wire connection;
2.Change the driver board;
3. Change the Compressor.
3
Initialization, phase
current imbalance
Bad driver board components.
Change the driver board .
4
Speed estimation,
failure in drive control
1.
Bad driver board components;
2.
Compressor shaft clamping;
3.
The compressor insulation fa
ils
.
1.Change the driver board ;
2.Change the Compressor ;
3.Change the Compressor .
5
IPM FO output fault
1.
System overloads or current
overloads.
2.
Driver board fa
ils
;
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 the compressor wire connection.
2. Change the driver board;
3. Change the control board ;
7
AC voltage,overload
voltage
1.
Supply voltage input
is
too high or
too
low;
2.
Driver board fa
ils
;
1.Check power supply;
2.Change the driver board;
8
DC voltage,overload
voltage
1.
Supply voltage input
is
too high ;
2.
Driver board fault;
1. Check power supply;
2. Change the driver board;
9
AC voltage imbalance
Driver board fa
ils
;
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 is abnormal, and power
frequency is out of range;
2.
Driver board
fa
ils
;
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
is
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
is
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
is
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
is
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 is wrong;
4. Driver board fault.
1, Check the power supply;
2. Check the power supply;
3.
Check the power supply wiring connection;
4.Change the driver board.
15
The instantaneous
power
off
detection
1.The power supply is not stable ;
2.The instantaneous power failure ;
3.Driver board fault;
1. Check the power supply;
2. Not a fault;
3. Change the driver board.
Содержание 2AMW-42U4RRA
Страница 10: ...1 GENERAL Type Capacity Btu h View 1 to 5 indoor units 42K 6 ...
Страница 15: ...3 OUTLINES AND DIMENSIONS 21K AMW3 24U4RFA Unit mm 11 ...
Страница 16: ...3 OUTLINES AND DIMENSIONS AMW3 24U4RAA Unit mm 414 380 12 ...
Страница 17: ...3 OUTLINES AND DIMENSIONS 27K Unit mm 414 380 13 ...
Страница 18: ...3 3 O OU UT TL LI IN NE ES S A AN ND D D DI IM ME EN NS SI IO ON NS S Unit mm 42K 14 ...
Страница 29: ...7 REFRIGERANT CYCLE 7 Refrigerant cycle 12K 14K 18K 21K 24K 25 ...
Страница 32: ...8 WIRING DIAGRAM Electric wiring diagram 1982504 D 21K AMW3 24U4RFA 28 ...
Страница 33: ...8 WIRING DIAGRAM AMW3 24U4RAA Electric wiring diagram 1957327 B 29 ...
Страница 34: ...8 WIRING DIAGRAM 27K 36K 30 ...
Страница 39: ...8 WIRING DIAGRAM Maintenance board Select switch signal to mainboard Communication signal to main board 35 ...
Страница 80: ...Product improvement specifications and appearance in this manual are subject to change without prior notice ...