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4. Service procedures
1
2
3
4
Section
SM830082
IV - 34
7 Solenoid coil of the electronic refrigerant *Measure the coil resistance.
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.
Refer to “1-2-(A) Major component specifications”.
8 Compressor motor (CM) ……… Outdoor unit *Measure the coil resistance.
• In case of single -phase compressor
Remove the cover of compressor terminal and measure the resistance
between terminals.
Refer to “1-2 Major component specifications”.
9 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.
Refer to “1-3 Other component specifications”.
• Check the continuity between contactors.
0 Solenoid coil of 4-way valve (20S) … Outdoor unit
• Measure the resistance between No.1 (BLK lead wire) and No.2 (BLK lead wire) terminals
of 2P (BLK) socket connected to the solenoid coil.
Refer “1-3 Other component specifications”.
MODEL
Push button on
the magnetic
contactor
no press
press
FMCA–1UL
Pair of terminals
R – U S – V T – W 31 – 32
–––– –––– –––– YES
YES YES YES ––––
*Measure the coil resistance.