A Sensor Is Defective; Operation Of Major Electrical Parts - Sanyo C1852 Service Manual

11. SERVICE PROCEDURES
(2)

A Sensor is Defective

1 1 1 1 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.
2 2 2 2 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

Operation Mode
(Function)
Manual
Night
Cool
setback
-ing
Timaer
(set)
Freeze prevention
Fan
Sweep
Flap
Stop
NOTE * Refer to Cooling Mode.
Operation
Room
Cool
Temp.
Thermo.ON
Thermo.OFF
Thermo.ON
Thermo.OFF
ON Timer
OFF Timer
Cool
Fan
Cool
Fan
Indoor unit and Remote Control unit
Indicator lamps
Night setback
Timer
Energy saver
* *
* *
– 40 –
Oudoor unit
Fan Compressor
Fan
Sweep
*
*
*
*
SM830079