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Wiring
Function DIP Switch Settings:
The 24V thermostat mode needs to refer to the following settings.
Indoor unit dial code
NOTICE
The SW4 DIP switch is only for Certified service technicians to debug and use,
please do not touch it.
1234 12
ON ON
SW1
1234
ON
SW2
1234
ON
SW3
1234
ON
SW4
S4
000 is the default
000/001/010/011/100/101/110/111, internal machines with dierent abilities, electric
heating and PSC classication for use
SW4-1
SW4-2
SW4-3
Short circuit W1 and W2.
W1, W2 separate.
DH on.
DH is off by default.
Dial code
Features ON OFF
NO.
S4-1
S4-2
Default ON.
DH function selection.
NO YESSW1-2 Anti-cold blow protection option.
2
Cooling. Cooling & Heating.SW1-3
Single cooling/heating and cooling options.
3
Indoor unit only. Full system.SW1-4
Stand alone indoor unit or full system.
4
1°C (1.8°F) 2°C (3.6°F)SW2-1
First stage auxiliary heating.
5
30 minutes. 15 minutes.SW2-2 Electric heat on delay.
6
The heater will not
operate if the outdoor
temperature is greater
than the temperature
set by S3.
The compressor will
not operate if the
outdoor temperature
is lower than the
temperature set by S3.
SW2-4
Compressor / Auxiliary heat outdoor
ambient lockout.
8
1°C (1.8°F) 2°C (3.6°F)SW3-2
Cooling and heating Y2 temperature
differential adjustment.
10
30 minutes. 90 minutes.SW3-1
Maximum continuous runtime allowed
before system automatically stages up
capacity to satisfy set point.
This adds 0.5 to 3.0°C to the user set
point in the calculated control point to
increase capacity and satisfy user set point.
9
2°C (3.6°F) 3°C (5.4°F)
SW3-3
Temperature differential to activate
second stage auxiliary heating.
11
13
14
NOSW2-3
Electric auxiliary heating delay to start time.
7
YES
SW1-1
NO
Whether 24V thermostat is used or not.
1
YES
0 means that the temperature protection is not
turned on, 1-F is -20-8°C (-4-46°F) respectively,
and each scale represents 2°C (3.6°F).
Rotary
Switch S3
Set outdoor temperature limitation
(for auxiliary heat or compressor).
12
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