Toshiba RAV-SM2246AT8J-E Service Manual page 61

13. Coil heating control
1) This control has the function of heating the compressor by applying a current to the compressor when not
operating instead using a case heater.
This control is for the purpose of preventing stagnation of the refrigerant inside the compressor.
2) Malfunction in the compressor may result if a current is not applied for a specified time before a test run
after installation as was previously the case.
Similarly, starting operation after turning the power OFF and not operating for a long time also requires
application of a current before starting operation, in the same manner as the test run.
3) Application of current is determined by TD and TO sensors.
When the TO sensor is defective, a backup control is automatically performed by the TE sensor.
When TO sensor is defective, make a determination using the LED display of the outdoor interface board.
4) The power is turned off when TD is 30°C or more.
TO [˚C]
Current application
0
conditions
TD < 30˚C
-1
-2
-3
Intermittent current
Continuous current
(70W : Total power consumption of inverter and compressor)
NOTE
While heating and electrifying the winding wire, electrifying sound may generate. It is nor abnormal.
No current
Intermittent current
ON: 10 minutes
OFF: 5 minutes
Continuous
current
Corresponding to 70w
Corresponding to 70w
Current application
conditions
TD < 30˚C
– 61 –
(When TO sensor defective)
TE [˚C]
No current
2
1
Intermittent current
0
ON: 10 minutes
OFF: 5 minutes
-1
Continuous
current