Carrier 42QFD048D8S Service Manual page 22

No. Name
1 CN301
2 CN23
CN705
3
CN706
CN709
4 CN22
CN715
5 CN714
CN714
6 CN501
7 CN24
CN704
8 CN703
CN702
CN708A
9
CN707A
U
10 V
W
11 CN174
12 CN505
Note: This section is for reference only. Please take practicality as standard.
CN#
CN301 Connect to DC fan motor
CN23 Connect to Comp Top
CN705 Connect to AC fan motor
CN706 Connect to AC fan motor
CN709 Connect to AC fan motor
CN22 Connect to high/low pressure protect
CN715
CN714 Connect to AC fan motor
CN714
CN501 Connect to electronic expansive valve
Connect to condenser temperature, outdoor ambient and discharge
CN24
sensor
CN704 Power Supply (L1)
CN703 Power Supply (L2)
CN702 Power Supply (L3)
CN708A
Connect to reactor
CN707A
U
V Connect to compressor
W
CN174 Test port
CN505 EEprom port
Meaning