User Manual

8
Maintaining your air conditioner
Internal protections via the unit control system

This internal protection operates if an internal fault occurs in the air conditioner.
Type Description
Against cold air
The internal fan will be o to against cold air when the heat pump is heating.
De-ice cycle
(Defrost cycle)
The internal fan will be o to against cold air when the heat pump is heating.
Anti-Freezing of Indoor
Heat Exchanger
The compressor will be o if the heat exchanger temp of indoor unit decrease to 0˚C or
more to protect from ice build up on the heat exchanger.
Protect compressor
The air conditioner does not start operating immediately to protect the compressor of
the outdoor unit after it has been started.
Checking before use
• IftheheatpumpisoperatinginHeatmode,De-icecycleisactuatedtoremovefrostfromanoutdoorunitthatmay
have deposited at low temperatures.
The internal fan is switched o automatically and restarted only after the de-ice cycle is completed.
NOTE
Operation ranges
The table below indicates the temperature and humidity ranges the air conditioner can be operated within.
Refer to the table for ecient use.
MODE OPERATIONAL TEMPERATURE
INDOOR HUMIDITY
IF OUT OF CONDITIONS
INDOOR OUTDOOR
COOLING
18˚C to 32˚C -5˚C to 48˚C 80% or less
Condensation may occur on
the indoor unit with risk to have
either water blow o or drops
on the oor.
HEATING
27˚C or less -20˚C to 24˚C __
Internal protection triggers and
the air conditioner will stop.
DRYING
18˚C to 32˚C -5˚C to 48˚C __
Condensation may occur on
the indoor unit with risk to have
either water blow o or drops
on the oor.
• Thestandardizedtemperatureforheatingis7˚C.Iftheoutdoortemperaturedropsto0˚C/32˚Forbelow,the
heating capacity can be reduced depending on the temperature condition.
If the cooling operation is used at over 32˚C (indoor temperature), it does not cool at its full capacity.
• Theuseoftheairconditioneratarelativehumidityabovetheexpectedone(80%)maycausetheformationof
condensate and the leakage of water drops on the oor.
NOTE