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•
SW1
The dialing code mainly controls and selects the
type of unit. It is suggested to adjust under the
guidance of the engineering staff.
SW1-1: Switch communicaon mode funcon,
(ON: 24V wire controller; OFF: non-24V wire
controller, default)
SW1-2: This dial code can be used to set whether
to stop the fan when the cold air is released, OFF
stops the fan, ON does not stop the fan, default
OFF
SW1-3: Select single cold and heat pump funcons.
ON: single cooling; OFF: heang and cooling,
default
SW1-4: The dialing funcon is to select indoor and
outdoor unit or indoor unit. The default OFF means
the indoor and outdoor unit, at this me you need
to connect the outdoor unit equipped with the
AHU set. When the user uses the temperature
control to control the indoor and outdoor unit,
they need to switch the dialing code to ON, which
means the independent indoor unit; at this me,
the indoor unit module does not communicate
with the outdoor unit, and does not process the
informaon of the outdoor unit. The wire controller
cannot be used, it needs to be connected to a
24V thermostat.
•
SW2
This dial code mainly controls the opening
form of the electric auxiliary heat.
SW2-1: This dial code can control the temperature
difference when the electric heang is turned on.
OFF: 36°F/2°C, default; ON: 34°F /1°C, 3-level
temperature seng, consistent with user
thermostat seng.
Note: When E/AUX controls electric heang,
there is no temperature difference, and it starts
directly.
SW2-2, SW2-3: This two-digit dialing code can
control the delayed start of electrically-assisted
heat.
When the temperature difference is too large,
the delayed start and the delayed start me can
be selected.
Function DIP switch:
1-bit dialing, ON 36°F/2.5°C,
OFF without delay
1 bit dialing, OFF 15 minutes,
ON 30 minutes, 15 minutes by
default, delayed opening me
SW2-2
SW2-3
SW2-4: This dial code controls the allowable
opening temperature of electric heang or
compressor, OFF allows the opening temperature
of electric heang (using the set temperature of
S3 as the upper limit temperature of electric
heang), and ON the allowable opening
temperature of the compressor (using S3 as the
upper limit temperature of electric heang). The
lower limit temperature at which the compressor
can allow operaon.)
•
S3
Ambient temperature controlled by electric
heang or compressor, 0 means no temperature
protecon is turned on, 1-F is -20-8°C, and each
scale represents 2°.
SW3-1
This dialing code can set the connuous operaon
me of increasing the set temperature by 32°F~37°F
0.5°C~3°C before reaching the temperature.
The default is OFF 1.5h, ON 30min.
SW3-2
This dialing code can set Y/Y2 signal seng
temperature adjustment deviaon, ON:
34°F /1°C; OFF: 36°F/2 ° C.
SW3-3
This dialing code can set W2 signal seng
temperature adjustment deviaon, ON: 36°F/2°C;
OFF: 37°F/3 ° C.
Wiring
Page 44
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