ENGLISH
4 BEFORE OPERATION
!
C A U T I O N
•
Supply electrical power to the system for approximately 12 hours be
-
fore start-up or a long shutdown. Do not start the system immediately
after power supply, it may cause a compressor failure because the
compressor is not heated well.
•
When the system is started after a shutdown longer that approximate
-
ly 3 months, it is recommended to check the system by your service
contractor.
•
Turn OFF the main switch when the system is to be stopped for a long
period of time: If the main switch is not turned OFF, electricity will be
used, because the oil heater is always energised during compressor
stopping.
•
Make sure that the outdoor unit is not covered with snow or ice. If cov
-
ered, remove it by using hot water (approximately 50°C). If the water
temperature is higher that 50 °C, it will cause damage to plastic parts.
5 REMOTE CONTROLLER OPERATION
It is advisable to use PC-ART or PC-ARF remote controller (both optional). For more information about it installation and operation,
please refer to its corresponding Installation and Operation Manuals.
6 AUTOMATIC CONTROLS
The system is equipped with the following functions.
Three minute guard
The compressor remains off for at least 3 minutes once it has
stopped. If the system is started within approximately 3 minutes
after it has stopped, the RUN indicator is activated. However, the
cooling operation or the heating operation remains off and does
not start until after 3 minutes has elapsed.
Operation may stop for 6 minutes maximum to protect
compressor.
Frost prevention during cooling operation
When the system is operated in a low temperature room, the
cooling operation may be changed to fan operation for a while to
avoid frost formation on the indoor heat exchanger.
Automatic restart after power failure
If the power supply is interrupted for short periods of time (up
to 2 seconds) the Remote Control switch will retain the settings
and the unit will restart when the power is restored. If Automatic
Restart is required after periods of lost power supply in excess
of 2 seconds please contact your distributor (optional function).
Slow air control during heating operation
When the compressor is stopped while the thermostat is OFF, or
the system is performing the automatic defrosting operation, the
fan speed is set at the slow position.
Automatic defrosting cycle
When the heating operation is stopped by pressing RUN/STOP
switch, frosting on the outdoor unit is checked and the defrosting
operation may be performed for the maximum of 10 minutes.
Prevention of overload operation
When the outdoor temperature is too high during heating
operation, heating operation is stopped due to activation of the
outdoor thermistor until the temperature becomes low.
Hot start during heating operation
To prevent cold air discharge, the fan speed is controlled from
the slow position to the set position according to the discharge
air temperature. At this time the louver is fixed horizontally.
Compressor hot start
FS(V)N(Y)3E Series does not operate within 4 hours after power
supply (stoppage code d1-22).
In case of operating within 4 hours, see
Test Run
chapter
.
BEFORE OPERATION
PMML0354A rev.1 - 03/2015
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