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4. SERVICE PROCEDURES
6
Solenoid coil of the electronic refrigerant
control valve (ERCV) ............ Indoor unit
•
Measure the resistance between No. 5 (GRY lead wire) and other terminals
(another color of lead wires) of 5P (WHT) plug connected to the solenoid coil.
7
Compressor motor (CM) ......... Outdoor unit
•
In case of triple -phase compressor
Measure the resistance between "R" (RED lead wire) and "S" (WHT lead
wire) terminals, "R" and "T" (BLU lead wire) terminals and "S" and "T"
terminals on the compressor motor magnetic contactor.
•
In case of single -phase compressor
Remove the cover of compressor terminal and measure the resistance
between terminals.
8
Compressor motor magnetic contactor (52C) ............ Outdoor unit
•
Measure the resistance between A (ORG lead wire) and B (GRY lead wire)
terminals on the compressor motor magnetic contactor.
•
Check the continuity between contactors.
MODEL
Push button on
the magnetic
contactor
4
no press
press
9
Solenoid coil of 4-way valve (20S) ... Outdoor unit
•
Measure the resistance between No.1 (BLU lead wire) and No.2 (BLU lead
wire) terminals of 2P (YEL) socket connected to the solenoid coil.
Refer to "1-2-(A) Major component specifications".
Refer to "1-2 Major component specifications".
Refer to "1-3 Other component specifications".
R – U
––––
YES
Refer "1-3 Other component specifications".
FMCA–1S
Pair of terminals
S – V
T – W 31 – 32
––––
––––
YES
YES
YES
––––
101
–
–
*Measure the coil resistance.
*Measure the coil resistance.
*Measure the coil resistance.
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