45MBDAQ: Owner’s Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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A NOTE ABOUT SAFETY
Any time you see this symbol in manuals, instructions and on the unit, be
aware of the potential for personal injury. There are 3 levels of precaution:
1. DANGER identifies the most serious hazards which will result in
severe personal injury or death.
2. WARNING signifies hazards that could result in personal injury or
death.
3. CAUTION is used to identify unsafe practices which could result in
minor personal injury or product and property damage.
NOTE is used to highlight suggestions which will result in enhanced
installation, reliability, or operation.
NOTE: Risk of Fire. Flammable refrigerant used. To be repaired
only by trained service personnel. Do not puncture
refrigerant tubing.
GENERAL
The indoor unit provides quiet, maximum comfort. In addition to cooling
and/or heating, the indoor unit matched with an outdoor condensing unit
filters and dehumidifies the air in the room to provide maximum comfort.
IMPORTANT: The indoor unit should be installed by authorized
personnel only; using approved tubing and accessories. If technical
assistance, service or repair is needed, contact the installer. The
indoor unit can be set up and operated from the remote control
(provided). If the remote is misplaced, the system can be operated
from the “Auto” setting on the unit.
Operating Modes:
The indoor unit has five operating modes:
• FAN Only
• AUTO
• HEATING (heat pumps only)
•COOLING
• DEHUMIDIFICATION
FAN Only
In the FAN Only mode, the system filters and circulates the room air
without changing room air temperature.
AUTO
In the AUTO mode, the system automatically cools or heats the room
according to the user-selected set point.
NOTE: AUTO mode is recommended for use on single zone
applications ONLY. Using AUTO CHANGEOVER on multi-
zone applications could set an indoor unit to STANDBY
mode, indicated with two dashes (--) on the display, which
turns off the indoor unit until all the indoor units are in the
same mode (COOLING or HEATING). HEATING is the
system's priority mode. Simultaneous HEATING and
COOLING is not allowed.
HEATING (Heat Pump models only)
In the HEATING mode, the system heats and filters the room air.
COOLING
In the COOLING mode, the system cools, dries and filters the room air.
DEHUMIDIFICATION (DRY)
In the DEHUMIDIFICATION mode, the system dries, filters and
slightly cools the room air temperature. This mode prioritizes air
dehumidification but it does not take the place of a dehumidifier.
AUTO LEAK DETECTION
LEAK DETECTION SYSTEM installed. Unit must be powered except
for service. For the unit with refrigerant sensor, when the refrigerant
sensor detects refrigerant leakage, the indoor unit will display a error code
and emit a buzzing sound, the compressor of outdoor unit will
immediately stop, and the indoor fan will start running. The service life of
the refrigerant sensor is 15 years. When the refrigerant sensor
malfunctions, the indoor unit will display the error code FHCC. Refer to
the error code table in the unit’s service manual for details. The
refrigerant sensor can not be repaired and can only be replaced by the
manufacture. It shall only be replaced with the sensor specified by the
manufacture.
PERSONAL INJURY AND PROPERTY DAMAGE HAZARD
For continued performance, reliability, and safety, the only
approved accessories and replacement parts are those specified by
the equipment manufacturer. The use of non-manufacturer
approved parts and accessories could invalidate the equipment
limited warranty and result in a fire risk, equipment malfunction,
and failure.
Please review the manufacturer’s instructions and replacement
parts catalogs available from your equipment supplier.
WAR NI N G
PERSONAL INJURY, DEATH AND / OR PROPERTY
DAMAGE HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical shock, or
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or service agency must use factory-authorized kits or
accessories when modifying this product.
Read and follow all instructions and warnings, including labels
shipped with or attached to the unit before operating your new air
conditioner.
WAR NI N G
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