Thermistor Temperature Characteristics; How To Operate The Outdoor Unit Independently - IVT GS-XP12HR-N Service Manual

[2] THERMISTOR TEMPERATURE CHARACTERISTICS

0.1. Temperature properties of indoor thermistors
K
80
60
40
20
0
0.2. Temperature properties of outdoor thermistors
Resistance

[3] 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 C9
TH1 Room temperature thermistor
Connector
CN14
1
Room temperature
thermistor TH1 (yellow)
25ºC resistance 10 K
-10 0 10 20 30
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)
TH2 Heat exchange thermistor
TH3 Valve temperature thermistor
40K
2
0ºC resistance
14.5 K
30K
25ºC resistance
4.431 K
20K
Tester
10K
0
-20 0
40
Temperature (ºC)
Connector
CN8
10 1
40K
Resistance at 0
Resistance
(In case of TH2 heat exchanger thermistor)
30K 14.57 k
(K )
Resistance at 25
4.431 k
20K
TH2
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
Connector
CN13
1 4
TH2
Tester
20 40 60
10
+
-
Tester
TH5
60
)
Short-circuit negative terminal of
capacitor (C33) and jumper wire
(JP16) using IC clip, etc.
GSXP12HRN