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Sensor (Thermistor)
Characteristics
70
1
Outdoor Air Sensor
2
Outdoor Heat Exchanger
60
Sensor
50
40
1
30
2
20
10
0
-10
0
10
20
30
40
o
Temperature (
C)
Compressor Temp. Sensor
(Thermistor) Characteristics
70
60
50
40
30
20
10
0
50
20
40
Temperature (
60
80
100
120
140
o
C)
46
DC FM
CN-MTR1
1
Feedback output (0 - 5Vdc pulse)
2
5Vdc
3
GND
CN-MTR2 (Measure winding resistance / voltage)
1
W
~80 ohm / 15Vdc
3
U
~80 ohm / 15Vdc
5
V
~80 ohm / 15Vdc
CN-TH1 (Measure resistance)
1-2
Outdoor air intake sensor (15KΩ ±5% at 25°C)
3-4
Pipe temp sensor (4.96KΩ ±5% at 25°C)
CN-TANK (Measure resistance)
1-3
Comp temp sensor (50KΩ ±5% at 25°C)
CN-HOT
Measure resistance of v-coil CN-HOT
1-3
23Ω at 20°C
Measure voltage on PCB
during 4-way valve ON
1.8Vdc - 15Vdc
OFF
-
CN-STM (Measure resistance / voltage)
1-6
46Ω / 13Vdc
CN-PWR
Measure voltage
1-2
24Vdc
CN-DEMAND
Measure voltage
1-3
24Vdc
IPM (Input / Output)
Measure voltage
P & N, N-U,
280Vdc - 340Vdc
N-V, N-W
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