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.
L
Val
Low
Med
Hi
N
Valve
Fan
Alarm
Once the sensor fails, the thermostat will close the fan and valve, displaying “E1” or “E2”.
E1
：
Sensor in short circuit alarm E2
：
Sensor in open circuit alarm
。
It is displaying “HI” when the temperature is higher than 55
℃
, displaying “LO” when the temperature is lower
than 0
℃
.
WIRING DIAGRAMS
HL2023DA/DAE/DB/DBE
AC85
～
260V 50/60Hz
N L
HL2023Y/YE
AC85
～
260V 50/60Hz
N L
L
VC
VO
Damper
N
HL2023DA2/DA2E/DB2/DB2E
L
VC
VO
Low
AC85
～
260V 50/60Hz
N L
Valve
HL2023FCV2/FCV2E
L
Val2
Val1
Low
AC85
～
260V 50/60Hz
N L
Heating
Cooling
Med
Fan
Hi
N
Med
Fan
Hi
N
INSTALLATION
1.Put
3.5mm
width
screwdriver into the slot.
2.Open
the
face
cover.
3.Remove the cables from
the control board
4 . As per wiring diagram,
connect it with terminals,
5. Fix the installation
6. Connect the cables on
7. Firstly hang up the two
8. Press down the both
backboard
with
two
the control board
hooks with 30 degree
down sides to fix the
bolts on the wall.
angle
cover and finish the
installation
Note: Be sure to connect all the wires as per the wiring diagrams and keep it away from water,
mud and other material so as to prevent the unit being spoiled!
