8 Troubleshooting
Electronic expansion valve check procedure
SMGB0137 rev.0 - 05/2021
280
8.1 Electronic expansion valve check procedure
Valve position Electronic expansion valve
Locked fully closed Check the temperature of the piping in the heating process. Failure of the temperature to rise indicates a fault.
Locked slightly open The following conditions indicate a fault:
Where the freeze protection thermistor temperature is lower than the intake air temperature.
Where the unit being inspected stops and other units continue operating in cooling mode.
Locked fully open
8.2 Procedure for checking fan motors in indoor units
Name and abbreviation of the cable colours used:
Black Brown Red Yellow Green Blue Grey Orange White
BLK BRN RED YEL GRN BLU GRY ORN WHT
Indoor units Power output Wiring diagram Cable number Resistance (Ω)
RCI-1.0FSR
RCI-1.5FSR
RCI-2.0FSR
RCI-2.5FSR
RCI-3.0FSR
57 W DC motor — —
RCI-4.0FSR
RCI-5.0FSR
RCI-6.0FSR
127 W DC motor — —
RCIM-0.4FSRE
RCIM-0.6FSRE
RCIM-0.8FSRE
RCIM-1.0FSRE
RCIM-1.5FSRE
RCIM-2.0FSRE
RCIM-2.5FSRE
57 W DC motor — —
RCD-0.8FSR
RCD-1.0FSR
RCD-1.5FSR
RCD-2.0FSR
57 W
DC Motor — —
RCD-2.5FSR
RCD-3.0FSR
55 W
RCD-4.0FSR 35 W x 2
RCD-5.0FSR
RCD-6.0FSR
55 W x 2
RPC-3.0FSRE
RPC-4.0FSRE
RPC-5.0FSRE
RPC-6.0FSRE
145 W
BLK1-2RED
RED2-3YEL
YEL3-4GRY
RED2-6WHT
32.10
24.50
24.50
44.70
to 25
To Next Page
Loading...