HaiLin Controls HL2023 Series User Manual page 2

OPERATION
On/Off: Press " " to turn on, press "
Setting temperature: Press " " to reduce set-point, press " " to raise set-point, and 1
Mode Selection: Press " " to change system working in cooling " ", heating " " or ventilation " " mode, the
related icon will flash ( The ventilation function is invalid for HL2023Y/YE)
Fan Speed Selection not for HL2023Y: Press "
(Low)" or "AUTO (Auto)".
Under auto fan speed "AUTO", the fan-speed will be changed automatically. Auto LOW-speed When the
difference between room-temperature and set-point is 1 ; Auto MED
When difference is 3 .
℃
Control Motorized-Damper (HL2023Y/YE): Under cooling (heating) mode, The damper will be open when the
room temperature is 1℃ higher than set-point in cooling, or room temperature is 1℃ lower than set-point in heating,
Otherwise the damper will be closed.
Control Motorized Valve under 2-pipe configuration (not for HL2023Y/YE): If the differential temperature between
room temperature and set-point exceed 1℃, FCU valve will be open; if room temperature and set-point are equal,
HL2023DA/DAE/DA2/DA2E will close the FCU valve with the fan still running, HL2023DB/DBE/DB2/DB2E will close both
of valve and Fan.
Control FCU Valve under 4-pipe configuration (HL2023FCV2/FCV2E): In cooling, when the room temperature is
higher than set-point, the cooling Valve will be opened. Otherwise it will be closed. Heating valve is always closed. In
heating, When the room temperature is lower than set-point, the heating valve will be opened. Otherwise it will be closed.
Cooling valve is always closed.
Keyboard Lock Function
Keypad Lock: its keypad would be automatically locked in 30 seconds in case that no one uses the thermostat, so
as to prohibit other persons from operating the thermostat.
Keypad Unlock：Press"
automatically locked in 30 seconds）.
Low Temperature Protection Function
Turn off: When the room temperature is lower than 5 , the thermostat would automatically turn on the fan and
valve with " " showing, When the room temperature reaches to 7 , the thermostat w
Low Temperature Protection Setting
Turn off the thermostat, press" " and hold for 3 seconds, it will display "OF" or "ON", press "▲" or " ▼ " key to
adjust. "OF" indicates low temperature protection invalid, "ON" indicates low temperature protection function valid. The
default is "OF".
Temperature Adjustment
Temperature adjustment (±5 )
Turn off the thermostat, press" " and "
model）, press "▲"or "▼" to adjust the temperature value, it will be automatically confirmed after 6 second.
Beijing HaiLin Auto Controls Equipment Co., Ltd.
International Information Industry Basement, HuilongguanNorth, Changping District, Beijing
" again to turn off thermostat and its output.
" to change fan speed among "
℃
"for 5 seconds to unlock（In case that no one uses the thermostat, its keypad would be
℃ can be done by following step:
"hold for 3 seconds, it will display "XX
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-speed When difference is 2℃; Auto Hi-speed
℃
℃
℃ （not displaying the thermostat
HaiLin Controls
changed once.
℃
(Hi)", " (Med)", "
ill automatically close the output.
"
Tel: +86 10 52816666
www.hailin.com