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SM830079
11. SERVICE PROCEDURES
(2) A Sensor is Defective
11
11
1 Indoor (heat exchanger) coil temp. Sensor is defective.
(a) Open (=No continuity in sensor)
Compressor and outdoor fan repeat ON for 10 minutes and OFF for 6 minutes
when sensor opens.
(b) Short
“Freeze Prevention” does not operate when dehumidified water is frozen on the
indoor coil.
22
22
2 Room temp. Sensor (in the remote control unit) is defective.
(a) Open (=No continuity in sensor)
Neither outdoor fan nor compressor runs.
(b) Short
Outdoor fan and compressor do not stop. — Excessive cooling.
(3) Operation of Major Electrical Parts
Oudoor unit
Fan Compressor
Manual
Thermo.ON ⅜⅜ ⅜⅜ ⅜
Thermo.OFF ⅜⅜ ⅜
Night
Thermo.ON ⅜⅜ ⅜ ⅜⅜ ⅜
setback
Thermo.OFF ⅜⅜ ⅜
Timaer
ON Timer ⅜
(set)
OFF Timer ⅜⅜⅜ ⅜⅜ ⅜
Freeze prevention ⅜⅜ ⅜
⅜⅜
Sweep
Cool ⅜⅜* ⅜* ⅜⅜* ⅜*
Fan ⅜⅜
Stop
Cool ⅜⅜* ⅜* ⅜⅜* ⅜*
Fan ⅜⅜
NOTE ⅜* Refer to Cooling Mode.
Indicator lamps
Cool
Room
Temp.
(Function)
Operation Mode
Operation
Indoor unit and Remote Control unit
Sweep
Fan
Night setback
Energy saver
Timer
Cool
-ing
Fan
Flap