Thermistor Temperature Characteristics; How To Operate The Outdoor Unit Independently - Sharp AE-Z40KR Service Manual

AYZP40KR

[3] THERMISTOR TEMPERATURE CHARACTERISTICS

1. Indoor unit thermistor temperature characteristics
K
100
80
Resistance
(K )
60
40
20
0
-10
0
TH1 Room temperature thermistor
TH2 Heat exchanger thermistor
2. Outdoor unit thermistor temperature characteristics
Resistance

[4] HOW TO OPERATE THE OUTDOOR UNIT INDEPENDENTLY

1. Cooling in 40 Hz fixed mode
To operate the outdoor unit independently, short-circuit the sections indicated by arrows in the diagram below with an adapter, and apply 230 VAC
between (1) and (N) on the terminal board of the outdoor unit. This allows the outdoor unit to be operated in cooling mode independently.
(Do not operate the outdoor unit in this condition for an extended period of time.)
C10
TH1 TH2
CN2
4 3 2 1
- + - +
Tester Tester
Heat exchanger thermistor TH2 (orange)
Resistance at 25 : 15 k
Room temperature thermistor TH1 (yellow)
Resistance at 25 : 10 k
10 20 30 40
Temperature( )
Connector
CN8
1
+ -
500K
Tester
400K
(K )
300K
Resistance at 25
52.76 k
200K
5.8K 3.06K
4.17K 2.28K
100K
0
-20 0 20 60 80 100
Temperature( )
TH1 Compressor thermistor
Thermistor No.
Compressor thermistor TH1
Heat exchanger thermistor TH2
Outdoor air temperature thermistor TH3
Suction thermistor TH4
2-way valve thermistor TH5
(L2)
C9
CN2
Thermistor Symbol
Room temperature
Heat exchanger
Connector
CN8
10 1
40K
Tester
Resistance at 0
Resistance
(In case of TH2 heat exchanger thermistor)
30K 14.57 k
(K )
Resistance at 25
4.431 k
20K
TH2 TH5
10K
1.72K
0
120 -20 0 20 40
Temperature(
TH2 Heat exchanger thermistor
TH3 Outdoor air temperature thermistor
TH4 Suction thermistor
TH5 2-way valve thermistor
Connector Color
Before measuring resistance,
No. (1) - No. (2) Red
disconnect connectors from PWB.
No. (3) - No. (4) Orange
No. (5) - No. (6) Green
No. (7) - No. (8) Black
No. (9) - No. (10) Yellow
Connect with IC clip Connect with IC clip
Test mode cooling at 40 Hz Test mode cooling at 40 Hz
3 – 5
Color Before measuring resistance,
disconnect connectors as
TH1
shown above.
Yellow
(CN2)
TH2
Orange
(CN2)
10
+ -
60
)
Short-circuit negative terminal of
capacitor (C33) and jumper wire
(JP16) using IC clip, etc.