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14. 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.
(100W : Total power consumption of inverter and compressor)
NOTE
While heating and electrifying the winding wire, electrifying sound may generate. It is nor abnormal.
8
10
No current
Intermittent current
ON: 10 minutes
OFF: 5 minutes
Continuous
current
15
18
10
12
18
20
(When TO sensor defective)
TO [˚C] TE [˚C]
No current
Intermittent current
ON: 10 minutes
OFF: 5 minutes
Continuous
current
Current application
conditions
TD < 30˚C
Current application
conditions
TD < 30˚C
Intermittent current
Continuous current
Corresponding to 100w
Corresponding to 100w