A SERVICE OF

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4-12
PCB and Functions
1
2
3
4
5
6
7
8
OPTION
(CN014)
6P (white): Outputs external signals as shown in the fi gure below.
OPTION
(white)
Indoor unit control PCB (CR1)
DC 12V
Relay (DC 12V, field supply) (Note)
Fan signal
Heat start signal
Cool start signal
Thermostat signal
Defrost signal
Note: The relay must be installed at a distance of 6-9/16 ft. or less from the PCB.
2. Indoor Unit Control PCB