Cleaning circuit broken
INDOOR
-
-
-
-
-
-
-
-
000
00
1 time
001
00
2 times - -
Outdoor unit is under
forced operation
3 times
9 times
(sigle only)
9 times
(sigle only)
003
00
9 times -
009
00
Indoor thermistor defective
10 times
12 times
-
010
00
Abnormal rotating numbers
of DC fan motor
13 times -
013
00
IC531 data reading error
18 times -
018
00
Cleaning defective
20 times -
020
00
Human sensor unit defective
OUTDOOR
4 times 2 times
002
01
4 times 3 times
003
01
Compressor abnormal low
speed rotation
4 times 4 times
004
01
Compressor switching
failure
4 times 5 times
005
01
Overload lower limit cut
6 times
006
01
OH thermistor temperature
rise
4 times 7 times
007
01
Abnormal outdoor thermistor
016
01
9 times
009
01
Communication error
10 times
010
01
Abnormal power source
11 times
011
01
Fan stop for strong wind
4 times 12 times
012
01
Fan motor fault
4 times 13 times
013
01
EEPROM reading error
4 times 14 times
014
01
Active converter defective
4 times 15 times
16 times
<Cautions>
This function is effective only once immediately after the power is turned on. It will not work if you have performed another remote control operation beforehand.
Note also that it may not function in response to a procedure other than the above. (If it does not work,turn off the power,turn it back on and repeat the
procedure.)
If the memory stores nothing,performing a redisplay operation will not blink the lamp.
For a normal operation,turn off the power and turn it back an. After the above operation, the product will not receive a remote control signal normally.
After clearing the troubleshooting data,turn off the power. (If you do not turn off the power, the product will become unresponsive to remote control signals.)
015
01
Abnormal PWB circuit
012
00
Normal
Refrigerant cycle fault
Communication error
between indoor and
outdoor units
Peak current cut
Communication error
between indoor and
outdoor units
TIMER
LAMP
BLINKING
LD301
BLINKING
CODE MEANING
Software peak current cut
1.Electrical parts in the outdoor unit
Room thermistor or heat exchanger
thermistor is opened circuit or short
circuit.
OH thermistor is operating.
Thermistor is opened or shorted.
When indoor unit is not connected,
it blinks similarly, not malfunction.
1.Fan motor
2.Outdoor condition (wind)
1.P.W.B.s
1. Indoor interface circuit
Overcurrent is detected at the DC fan
motor of the indoor unit.
Outdoor interface circuit broken
When data read from IC531 or IC532 is
incorrect.
Short-circuit
Over current detected
Fail to switch from initial low frequency
sync to position detection sync.
Power supply voltage is incorrect.
Outdoor fan rpm is not rotate as
intended rpm.
Microcomputer cannot read the data
in EEPROM.
Over voltage is detected,compressor
abnormal load.
Active circuit abnormal.
Fan motor load is too heavy or
rotation disturbed by wind blow.
Overload condition still persisting even
when rotation speed is below the lower
rpm limit.
1.Outdoor unit is exposed to directsunlight or
its air flow blocked.
2.Fan motor
3.Fan motor circuit
4.The voltage is extremely low.
Position detection signal is not input
during operation.
MEANING
1.P.W.B.s
MEANING
1.Reversing valve defective
2.Heat exchanger thermistor disconnected.
(only in heating mode)
It is not failure. Outdoor unit is in forced
operation or balancing operation after
forced operation.
Indoor interface circuit broken
When the indoor heat exchanger
temperature is too low in the heating
mode or it is too high in the cooling mode.
Cleaning circuit
1.Room thermistor
2.Heat exchanger thermistor
1.Leak of refrigerant
2.Compressor
3.OH thermistor circuit
4.Fan motor
5.Fan motor circuit
1.Thermistor
2.Connection of thermistor is faulty
3.Thermistor circuit
1.Cable is wrong connected
2.Cable is open
3.Interface circuit between indoor and outdoor unit.
1.Indoor interface circuit
2. Outdoor interface circuit
3.Indoor control P.W.B
1. Outdoor interface circuit
1.IC531 or IC532 abnormal
Human sensor circuit
1.Compressor
2.P.W.B.s
1.P.W.B.s
2.Compressor
1.Power supply voltage
2.Receptcle of wire for P.W.B IPM is not
properly inserted
1.P.W.B.s
2.Compressor
1.P.W.B main
1.Fan motor
2.Fan motor circuit
2.Compressor
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