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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 (
DC FM
CN-MTR1
CN-MTR2 (Measure winding resistance / voltage)
CN-TH1 (Measure resistance)
1-2
3-4
60
80
100
120
140
CN-TANK (Measure resistance)
o
C)
1-3
CN-HOT
Measure resistance of v-coil CN-HOT
1-3
Measure voltage on PCB
during 4-way valve ON
OFF
CN-PWR
Measure voltage
1-2
CN-DEMAND
Measure voltage
1-3
IPM (Input / Output)
Measure voltage
P & N, N-U,
N-V, N-W
44
1
Feedback output (0 - 5Vdc pulse)
2
5Vdc
3
GND
1
W
~80 ohm / 15Vdc
3
U
~80 ohm / 15Vdc
5
V
~80 ohm / 15Vdc
Outdoor air intake sensor (15KΩ ±5% at 25°C)
Pipe temp sensor (4.96KΩ ±5% at 25°C)
Comp temp sensor (50KΩ ±5% at 25°C)
18Ω at 20°C
1.8Vdc - 15Vdc
-
24Vdc
24Vdc
280Vdc - 340Vdc
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