Sharp AE-X4M30PU, Service Manual

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AE-X4M30PU
21
500k
400k
300k
200k
100k
0
-4 32 68 140 176 212 248
3.3kΩ 6.2kΩ
2.5kΩ
1.9kΩ
40k
30k
20k
10k
0
-4 32 68 140 104
(-20) (0) (20) (60) (80)(100) (120)
(-20) (0) (20) (60) (40)
TH1 : Compressor thermistor (CN8A 1 - 2 )
TH2 - TH4
TH6 - TH9
Temperature ºF (ºC) Temperature ºF (ºC)
25ºC resistance
50.0 kΩ
TH-1
Resistance (
)
Resistance (
)
32ºF(0ºC) resistance
14.5 kΩ
77ºF(25ºC) resistance
4.431 kΩ
4.5kΩ
Figure 2 Temperature properties of outdoor thermistors
Connector
CN8A
Connector
CN8M
1
TH2 : Heat exchanger pipe thermistor (CN8A 3 - 4 )
TH3 : Outdoor temp. thermistor (CN8A 5 - 6 )
TH4 : Suction thermistor (CN8A 7 - 8 )
TH6 : Thermistor unit A (CN8M 1 - 2 )
TH7 : Thermistor unit B (CN8M 3 - 4 )
TH8 : Thermistor unit C (CN8M 5 - 6 )
TH9 : Thermistor unit D (CN8M 7 - 8 )
1
9
10
Thermistor No. Connector Color Connector pin
Compressor thermistor TH1 CN8A Red No. 1 to 2
Heat exchanger pipe thermistor TH2 CN8A Orange No. 3 to 4
Outdoor temp. thermistor TH3 CN8A Green No. 5 to 6
Suction thermistor TH4 CN8A Black No. 7 to 8
Thermistor unit A (suction) TH6 CN8M Blue No. 1 to 2
Thermistor unit B (suction) TH7 CN8M White No. 3 to 4
Thermistor unit C (suction) TH8 CN8M Brown No. 5 to 6
Thermistor unit D (suction) TH9 CN8M Yellow No. 7 to 8
1. How to distinguish the defective parts
1) When all rooms are not cooled
Yes
Yes
Yes
No
No
No
Are the timer lamps of the in-
door units in all rooms flashing ?
Is the compressor of the outdoor
unit operating ?
Are the timer lamps of the indoor
units in all rooms flashing ? Check the failure symptom with
the failure diagnosis mode.
The cooling cycle is abnormal.
Check the pressure.
Check that the power between
the terminal board "L1" and "L2"
of the indoor unit is AC 230V,
60Hz.
Repair the wiring between the
units.
Press the OPERATION button to start
operating the air-conditioner.
(One-room operation ON)
(Set the cooling mode to 61ºF(16ºC))
(Check the failure with
the outdoor unit.)
TO
A