– 42 –
4. Coil heating control
Intermittent power-ON
10 minutes: ON /
5 minutes: OFF
Output
[40W or equiv
a
lent]
Continuous power-ON
Output
[40W or equiv
a
lent]
No power
(Normal time)
(TO
s
en
s
or trouble)
TO
15˚C
10˚C
8
˚C
1
8
˚C
• Power-ON
condition
TD<
3
0˚C
Intermittent power-ON
10 minutes: ON /
5 minutes: OFF
Output
[40W or equiv
a
lent]
Continuous power-ON
Output
[40W or equiv
a
lent]
No power
TE
1
8
˚C
12˚C
10˚C
20˚C
• Power-ON
condition
TD <
3
0˚C
I
1–1.0
I
1
Current [A]
Norm
a
l oper
a
tion
Frequency down
Hold
Hold
1) This control function heats the compressor by turning on the stopped compressor instead of a case
heater.
It purposes to prevent stagnation of the refrigerant inside of the compressor.
2) As usual, turn on power of the compressor for the specified time before a test run after installation;
otherwise a trouble of the compressor may be caused.
As same as a test run, it is recommended to turn on power of the compressor beforehand when starting
operation after power of the compressor has been interrupted and left as it is for a long time.
3) A judgment for electricity is performed by TD and TO sensors.
If TO sensor is trouble, a backup control is automatically performed by TE sensor.
For a case of TO sensor trouble, judge it with outdoor LED display.
4) For every model, the power is turned off when TD is 30°C or more.
REQUIREMENT
While heating the winding wire by applying a current to it, an abnormal sound may be generated. It is no
abnormality.
5. Short intermittent operation preventive control
1) For 3 to 10 minutes after operation start, in some cases, the compressor does not stop to protect the
compressor even if receiving the thermostat-OFF signal from indoor.
However it is not abnormal status. (The operation continuance differs according to the operation status.)
2) When the operation stops by the remote controller, the operation does not continue.
6. Current release control
No. of revolutions of the compressor is controlled by AC current value detected by T611 on the outdoor P.C.
board so that the input current of the inverter does not exceed the specified value.
Objective mode l
IIIII
1 v
a
lue [A ]
GP110
GP140
GP160
COOL
HEAT
COOL
HEAT
COOL
HEAT
9
.6
15.2
9
.6
15.2
9
.6
15.2
