60
(12) 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 P.C. board.
(4) The power is turned off when TD is 30°C or more.
NOTE
While heating and electrifying the winding wire, electrifying sound may generate. It is no abnormality.
GP56, GP80
Intermittent current
Corresponding to 40 W
Continuous current
Corresponding to 40 W
(70 W: Total power consumption of inverter and compressor)
-3
-2
-1
0
-1
0
1
2
TO [˚C]
TE [˚C]
Current application
conditions
TD < 30°C
Current application
conditions
TD < 30°C
(When TO sensor defective)
No current
Intermittent current
ON: 10 minutes
OFF: 5 minutes
Continuous
current
No current
Intermittent current
ON: 10 minutes
OFF: 5 minutes
Continuous
current
