Haier AB18SC2VHA Technical Overview

PAGE 8
ENGLISH
INTRODUCTION
OVERVIEW & INTRODUCTION
Auto Mode
When the running mode is turned to auto after starting the
system, the system will rst determine the running mode
according to the current room temperature and then will
run according to the determined mode: Tr means room
temperature; Ts means temperature setting; Tp means
temperature of indoor coil pipe
Tr≥73°F Choose Cooling Mode
Tr<73°F Choose Heating Mode
After turning to the auto mode, the running mode will be
switched between cooling mode, fan mode, and heating mode
according to the change of the indoor ambient temperature.
There is a 15 minute delay between mode changes.
Cooling operation mode
Temperature control range: 60°F---86°F
Temperature dierence: ±2°F
* Control features: When Tr (input airow)>Ts (set
temperature) °F, the indoor fan will operate at the set speed,
the mode signal will be sent to the outdoor system, and
the compressor will start. When Tr (input airow)< Ts (set
temperature)°F, the indoor fan will operate at the set speed,
and the mode signal will be sent to the outdoor system, and
the compressor will stop. The system will keep the original
status if Tr= Ts.
Airow speed control: (temperature dierence ±2°F)
Automatic:
When Tr≤Ts +4°F high speed.
When Ts+2°F≤Tr<Ts+5°F, medium speed
When Tr<Ts+2°F, low speed
When the sensor is o, low speed
When the airow speed has no delay from the high to low
switching, the speed should be delayed for 3 minutes (remain
at high speed for 3 minutes.) before the next switch.
When the system is operating, you can set the high, medium
or low speed manually. (When the sensor is on or o, the
system will change the speed 2 seconds after receiving the
signal.)
*Louver control: the location for the louver can be set
according to your needs.
*Defrosting function: preventing the frosting on the indoor
heat exchanger (when cooling or dehumidifying). When the
compressor works continuously for 1 to 6 minutes (adaptable
in EEPROM) and the temperature of the indoor coils has been
below 32°F for 10 seconds, the compressor will be stopped
and the malfunction will be recorded in the malfunction list.
The indoor system will continue to run. When the temperature
of the indoor coil is raised to 45°F, the compressor will be
restarted again (the requirement of 3 minutes’ delay should
be satised.)
Dry Mode (Dehumidifying mode)
* temperature control range: 60---86°F
* temperature dierence: ±2°F
Control feature: Send the dehumidifying signal to the outdoor
system.
When Tr>Ts+4°F, the compressor will be turned on, the indoor
fan will operate at the set speed. When Tr is between the
Ts and Ts+4°F, the outdoor system will operate at the high
dehumidifying frequency for 10 minutes and then at the low
dehumidifying mode for six minutes. The indoor fan will
operate at low speed.
When Tr< Ts, the outdoor system will be stopped, the indoor
fan will be stopped for 3 minutes and then turned to the low
speed option.
All the frequency conversions have a ±2°F dierence.
* Wind speed control: Automatic:
When Tr≥ Ts+ 9°F, high speed.
When Ts+5°F≤Tr< Ts+9°F, medium speed.
When Ts+4°F≤Tr< Ts+5°F, low speed.
When Tr<Ts+4°F, light speed.
If the outdoor fan is stopped, the indoor fan will be paused for
3 minutes.
If the outdoor fan is stopped for more than 3 minutes and the
outdoor system still operates, the system will be changed into
light speed mode.
When the airow speed has no delay from the high to low
switching, the speed should be delayed for 3 minutes (remain
at high speed for 3 minutes.) before the next switch.
When the sensor is o or Tr< Ts+5°F, the manual operation can
not be made. (obligatory automatic operation.)
*Louver location control: the location for the louver can be set
according to your needs.
*Defrosting function: preventing the frosting on the indoor
heat exchanger (when cooling or dehumidifying). When the
compressor works continuously for 16 minutes (adaptable in
EEPROM) and the temperature of the indoor coils has been
below 32°F for 10 second, the compressor will be stopped and
the malfunction will be recorded in the malfunction list. The
indoor system will continue to run. When the temperature
of the indoor coil is raised to 45°F, the compressor will be
restarted again (the requirement of 3 minutes’ delay should
be satised.)
Functions and Controls

Haier AB18SC2VHA Specifications

General

Refrigerant	R410A
Voltage	220-240V
Phase	1
Cooling Capacity	18000 BTU
Weight (Indoor/Outdoor)	35 kg