44
Sensor (Thermistor)
Characteristics
70
60
50
40
30
20
10
0
-10
0
10
Temperature (
o
C)
R
e
si
st
a
n
ce
(k
Ω
)
20
30
40
50
1
2
1
2
Outdoor Air Sensor
Outdoor Heat Exchanger
Sensor
Compressor Temp. Sensor
(Thermistor) Characteristics
70
60
50
40
30
20
10
0
20
40
60
Temperature (
o
C)
R
e
si
st
a
n
ce
(k
Ω
)
80
100
120
140
DC FM
CN-MTR1
1
Feedback output (0 - 5Vdc pulse)
2
5Vdc
3
GND
CN-MTR2 (Measure winding resistance / voltage)
1
W
3
U
5
V
~80 ohm / 15Vdc
~80 ohm / 15Vdc
~80 ohm / 15Vdc
CN-TH1 (Measure resistance)
1-2
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)
24Vdc
CN-HOT
Measure resistance of v-coil CN-HOT
1-3
18Ω at 20°C
Measure voltage on PCB
during 4-way valve ON
1.8Vdc - 15Vdc
OFF
-
CN-PWR
Measure voltage
1-3
24Vdc
CN-DEMAND
Measure voltage
P & N, N-U,
N-V, N-W
280Vdc - 340Vdc
IPM (Input / Output)
Measure voltage
