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ROUBLESHOO ING WHEN HE IMER LAMP BLINKS
MODEL RAD-28QH4, RAD-40QH4
Perform troubleshooting according to the number of times the timer lamp on the display of the indoor unit blinks.
Lamp blinking mode
Main defective
2 sec
Reversing valve defective
Once
Forced operation of
2 sec
2 Times
outdoor unit
Indoor / outdoor interface
2 sec
3 Times
defective
Outdoor electric assembly
2 sec
4 Times
defective
Abnormal water level
2 sec
6 Times
detection
During drain pump test
2 sec
7 Times
drive
Indoor thermistor
2 sec
9 Times
abnormal
Over current in DC fan
2 sec
10 Times
moter
2 sec
13 Times
IC401 defective
MODEL RAF-25NH4, RAF-50NH4
Lamp blinking mode
Main defective
2 sec
Once
Reversing valve defective
2 sec
2 Times
Forced operation of outdoor unit
2 sec
3 Times
Indoor/Outdoor interface defective
2 sec
Damper defective
8 Times
2 sec
Indoor sensor defective
9 Times
Abnormal rotating numbers
2 sec
10 Times
of DC fan motor
2 sec
13 Times
IC401 defective
Lights for 0.35 sec at
(
)
interval of 0.35 sec.
<
>
Cautions
(1) If the interface circuit is faulty when power is supplied, self-diagnosis will not be displayed.
(2) If the indoor unit does not operate at all, check to see if the connecting cord is reversely connected or disconnected.
Lamp blinking mode
Main defective
2 sec
Once
Reversing valve defective
Forced operation of
2 sec
2 Times
outdoor unit
Indoor / outdoor interface
2 sec
3 Times
defective
Abnormal water level
2 sec
6 Times
detection
During drain pump test
2 sec
7 Times
drive
Indoor thermistor
2 sec
9 Times
abnormal
Over current in DC fan
2 sec
10 Times
moter
2 sec
13 Times
IC401 defective
Lights for 0.35 sec at
)
(
interval of 0.35 sec.
Lamp blinking mode
Main defective
2 sec
2 Times
Peak current cut
2 sec
3 Times
Abnormal low speed rotation
2 sec
4 Times
Switching failure
2 sec
Overload lower limit cut
5 Times
2 sec
OH thermistor temp. rise
6 Times
2 sec
7 Times
Outdoor thermistor abnormal
2 sec
8 Times
Acceleration defective
2 sec
9 Times
Comunications error
2 sec
12 Times
Fan lock error
2 sec
13 Times
Defective EEPROM of outdoor unit
2 sec
14 Times
Defective active converter
2 sec
15 Times
Discharge error
Fan Motor Set Wind Volocity and DC Voltage (between blue and red) characteristics.
MODEL RAF-32QH1
MODE
FAN SPEED
SUPER LO SS
SLEEP
LO
S
Heating
OVER LOAD
operation
MED
LO
HI
(SET FAN SPEED AUTO HI)
HI
(SET FAN SPEED HI)
SUPER HI
(SET FAN SPEED HI)
SLEEP
LO
S
COOL rhythm S
Cooling
COOL rhythm LO
operation
MED
LO
HI
HIHI
SLEEP LO S
Dehumidifying
MED
LO
operation
HI
LO
S
Heating
MED
LO
operation
HI
LO
S
Cooling
MED
LO
operation
HI
MODEL RAF-40QH1
MODE
FAN SPEED
SUPER LO SS
SLEEP
LO
S
Heating
OVER LOAD
operation
MED
LO
HI
(SET FAN SPEED AUTO HI)
HI
(SET FAN SPEED HI)
SUPER HI
(SET FAN SPEED HI)
SLEEP
LO
S
COOL rhythm S
Cooling
COOL rhythm LO
operation
MED
LO
HI
HIHI
SLEEP LO S
Dehumidifying
MED
LO
operation
HI
LO
S
Heating
MED
LO
operation
HI
LO
S
Cooling
MED
LO
operation
HI
Connector blue - red voltage (V)
Rotation speed (min.
-1
12.1
650
19.7
910
19.7
910
24.3
1100
24.3
1100
27.4
1250
27.4
1250
27.4
1250
18.1
820
20.3
920
20.3
920
24.5
1100
24.5
1100
29.6
1220
29.6
1220
20.3
830
20.3
830
20.3
830
21.6
1080
22.8
1150
25.7
1290
0
0
25.7
1100
Connector blue - red voltage (V)
Rotation speed (min.
-1
12.1
650
21.5
980
21.5
980
25.1
1130
25.1
1130
30.8
1300
30.8
1300
30.8
1300
18.1
820
21.4
940
21.4
940
26.7
1120
26.7
1120
31.5
1250
31.5
1250
21.4
950
21.4
950
21.4
950
21.6
1080
22.8
1150
25.7
1290
0
0
25.7
1100
293
)
LABEL NAME
AFWSS
AWSOY
AFWSSZ
AFWKAF
AFWL
AFWAH
AFWH
AFWHH
AFCSOY
AFCSSZ
AFCRS
AFCRL
AFCL
AFCH
AFCHH
AFDSSZ
AFDL
AFDH
AFWUDS
AFWUDL
AFWUDH
AFCUDS
AFCUDL
AFCUDH
)
LABEL NAME
AFWSS
AWSOY
AFWSSZ
AFWKAF
AFWL
AFWAH
AFWH
AFWHH
AFCSOY
AFCSSZ
AFCRS
AFCRL
AFCL
AFCH
AFCHH
AFDSSZ
AFDL
AFDH
AFWUDS
AFWUDL
AFWUDH
AFCUDS
AFCUDL
AFCUDH
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