Specifications

-
31
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RUN light
1 time flash
2 time flash
6 time flash
TIMER light
1 time flash
2 time flash
4 time flash
Outdoor unit LED
OFF
OFF
OFF
Heat exchanger sensor error
Room temperature sensor error
Indoor fan motor error
¡ Broken heat exchanger sensor wire, connector
poor connection
¡ Broken room temperature sensor wire, connector
poor connection
¡ Defective fan motor, connector poor connection
Trouble Cause
OFF
OFF
OFF
Outdoor air temperature sensor
error
Outdoor unit heat exchanger sensor
error
Discharge pipe sensor error
¡ Broken outdoor air temperature sensor wire,
connector poor connection
¡ Broken heat exchanger sensor wire, connector
poor connection
¡ Broken discharge pipe sensor wire, connector
poor contact
2 time flash
5 time flash
6 time flash
2 time flash
5 time flash
6 time flash
Trouble of outdoor unit
Over heat of compressor
Error of signal transmission
¡ Compressor faulty
¡ Overload operation (51C operation)
¡ Gas shortage.
¡ Defective discharge pipe sensor.
¡ Broken signal wire.
¡ Defective indoor/outdoor unit PCB.
(3) Inspection procedures corresponding to detail of trouble
Sensor error
[Broken sensor wire,
connector poor connection]
(Shortcircuit)
(Broken wire)
Is connector connection good?
YES
YES
NO
NO
Replace PCB.
Correct connection.
Replace sensor.
Is sensor resistance value good?
◆ Sensor temperature characteristics
(Room temp., indoor unit heat exchanger
temp., outdoor unit heat exchanger
temp., outdoor air temp.)
Temperature (˚C)
Resistance (kΩ)
30
25
20
15
10
5
30
20
10
40 50 60
70
0
–10
Temperature (˚C) Resistance (kΩ)Temperature (˚C) Resistance (kΩ)
0 164 70 8.7
5 127 75 7.3
10 99 80 6.2
15 78 85 5.3
20 62 90 4.5
25 50 95 3.9
30 40 100 3.3
35 32 105 2.9
40 26 110 2.5
45 21 115 2.2
50 17 120 1.9
55 14 125 1.6
60 12 130 1.4
65 10 135 1.3
◆ Discharge pipe sensor temperature characteristics
(2) Self diagnosis display on indoor unit
TIMER light
ON
RUN light
keeps flashing
RUN light
ON