Hitachi RPIH-3.0HNAUB1Q, Руководство по эксплуатации, установке и обслуживанию, Страница: 9 / 24

Refer to the instruction manual for the wired control
used with the machine.
The units that have been left unused for a long period of
time shall be electrified for more than 12 hours before
startup. Do not start the machine immediately after
power-on since this may cause damage to compressor
due to inadequate warm-up of lubricating oil.
Please check if the outdoor unit is covered with ice or
snow. If yes, please remove the ice or snow with warm
water. However, the water temperature shall not exceed
50°C since this may cause damage to plastic parts.
Turn off the main power supply if the machine is
expected to be left unused for more than 3 months,
because the oil heater band consumes power even if
the compressor is not in service. You are
recommended to entrust maintenance personnel to
check the unit before startup.
5 . Operation Mode
6 . Auto Control
This system is designed with the following features.
NOTE
Please keep the main power supply ON unless the
system is left unused for long. By doing so, the drainage
pump (if any) starts to function when the level of
accumulated water in machine exceeds the predefined
level.
To protect the compressor, it is prevented for at least
3 minutes from functioning after its stop. The
compressor automatically gets started in 3 minutes.
Three-Minute Stop Protection
Three-Minute Operation Protection
Ensure the compressor runs at least for 3 minutes (if
the compressor runs for less than 3 minutes, it can't
stop unless 3 minutes elapse even if all indoor
temperatures reach the set values). However, the
compressor that runs for less than 3 minutes can be
brought out of service with the remote control.
Oil Return Operation
When an indoor unit is out of service for more than 2
hours during refrigeration, it will run for a few minutes
automatically to prevent the detention of refrigeration
oil in the indoor unit in stopped state.
3
Freeze Protection during Refrigeration
When the outlet air temperature of indoor unit is
excessively low, refrigeration may be automatically
switched to air supply mode, in which the unit runs for
a period of time to avoid frosting on indoor heat
exchanger.
Cold Air Prevention
To prevent the output of cold air from indoor unit in
heating mode, the fan runs at low speed. The fan
speed is set based on outlet air temperature of indoor
unit.
Control of Indoor Fan during Defrosting
The indoor fan is out of service during automatic
defrosting of outdoor unit.
Surplus Heat Output from Indoor Unit
Upon completion of heating, the indoor fan will keep
on running at low speed for approx. 2 minutes to
reduce the temperature of machine body.
Automatic Defrosting
Press "Run/Stop" key to stop heating. The outdoor
unit can automatically detect frost and automatically
perform defrosting for up to 10 minutes.
Overload Protection
Heating stops when outdoor temperature is
excessively high during heating. The heating
resumes when the outdoor temperature drops to a
certain level.
NOTE
If the unit stops due to power breakdown, the
system will not automatically get into service even
if power supply is restored.
Please restart the unit from Step 1. The settings
will not get lost in the case of extremely short
power-off time (within 2 seconds). The system will
come into operation automatically in approx. 3
minutes.
4. Before Operation