Switch
Setting
1
、
Switch 1
1 2 3 4 5 6 7 8
Cooling fan
Heating fan
Electric memory
Freeze protect
Reserved
Electric heater
Heat pump
Reserved
SW1.1
—
Reserved.
SW1.2
—
Heat
pump
enable
/
disable
.
It must match
specific unit-type configuration
,do not change the
default setting.
SW1.3
—
Electric
heater.
It must match
specific unit-type configuration
,do not change the
default setting.
SW1.4
—
Reserved.
SW1.5
—
Freeze
protect
.
When room temperature is lower than 10
℃
(50
℉
) continuously
for 3 minutes, unit (except the cooling only type) will start heating
automatically. Only when room temperature reaches 13
℃
(55
℉
)
will heating be stopped. If this switch is put to OFF position, it will
be no freeze protection.
SW1.6
—
Electric memory
.
If the unit is cut out of power during the operation, when it is
powered up again, all last settings will be remembered, and the
operation will follow the last mode. Same result if manually
powering on the unit. If this switch is put to OFF position, it will
be no memory.
SW1.7
—
Heating
fan
(No effect for 24VAC Thermostat Operation
).
Default setting is OFF(indoor fan cycles on and off). In heating
mode when compressor is OFF, indoor fan will be OFF too.
If this this switch is put to ON position, even compressor is OFF,
indoor fan will continuously running.
SW1.8
—
Cooling fan
(No effect for 24VAC Thermostat Operation
)
.
Default setting is OFF(indoor fan runs continuously). In cooling
mode when compressor is OFF, indoor fan will continuously run.
If this switch is put to ON position, when compressor is OFF,
indoor fan will be OFF .
-
15
-
2
、
Switch 3
1 2
Powered vent door
Duct select
SW3
.
1
—
Powered vent door
If this switch is put to OFF position , the powered vent
door will be closed, always.
If this switch is put to ON position , the powered vent
door will be normally closed and will open only when
the compressor runs.
SW3.2
—
Duct select(For 9k/12k)
SW3.1 is set to “OFF”
Powered vent door is close
SW3.1 is set to “ON”
Powered vent
door is open
SW3.1
—
Powered vent door
SW3.2
—
Duct select(For 9k/12k)
The duct select function allows the indoor fan to be
operated at two variable fan speeds.
When set in the up position(ON), the unit automatically
selects either high or middle fan speed ( for longer
ductwork applications).
When set in the down position(OFF), the unit
automatically selects either middle or low fan speed
(for shorter ductwork applications).
Most installations will have their established means to
ensure adequate fresh air supply to the building.
However, a powered vent door has been provided to
open up an outdoor/indoor air path within the unit, if
desired. There is a mesh screen present for when the
unit is operated with the vent door open. A vent air flow
rate will not be published as it varies based on too many
operational and situational influences. Also be aware
that outdoor noises will travel more easily into the indoor
space when the vent door is open.
