10 Troubleshooting
Electronic expansion valve check procedure
SMGB0099 rev.0 - 12/2016
344
10.1 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
10.2 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-1.0FSN4
RCI-1.5FSN4
RCI-2.0FSN4
RCI-2.5FSN4
RCI-3.0FSN4
57 W
DC motor
—
—
RCI-4.0FSN4
RCI-5.0FSN4
RCI-6.0FSN4
127 W
DC motor
—
—
RCIM-0.6FSN4(E)
RCIM-0.8FSN4(E)
RCIM-1.0FSN4(E)
RCIM-1.5FSN4(E)
RCIM-2.0FSN4(E)
RCIM-2.5FSN4(E)
57 W
DC motor
—
—
RCD-0.8FSN2
RCD-1.0FSN2
RCD-1.5FSN2
RCD-2.0FSN2
57 W
DC Motor
—
—
RCD-2.5FSN2
RCD-3.0FSN2
55 W
RCD-4.0FSN2
35 W x 2
RCD-5.0FSN2
55 W x 2
RPC-3.0FSN3E
RPC-4.0FSN3E
RPC-5.0FSN3E
RPC-6.0FSN3E
145 W
BLK1-2RED
RED2-3YEL
YEL3-4GRY
RED2-6WHT
32.10
24.50
24.50
44.70
to 25 ºC
RPC-1.5FSN3
RPC-2.0FSN3
50 W
DC motor
—
—
