Commercial Air Conditioner Model: AU182AFERA
AD182AMERA, AS182AVERA
Below 28℃
Class-1 Class-3 Class-5
Compressor frequency
in heating
F<25Hz
25Hz≤F<45Hz 45≤F
Over 15℃
Class-2 Class-4 Class-5
Tao
Below 15℃
Class-3 Class-5 Class-7
8.1.2.4 Outdoor fan speed control when selecting AC motor
Selecting AC motor or DC motor depends on EEPROM.
Blowing remaining heat: compressor shuts off, fan motor will run at low speed for 30 seconds
and then stop.
Fan speed chart in 3 minutes after compressor starts up:
Ambient
temp.
~10 10~25 25~
Cool, dry Low speed High speed High speed
heat High speed High speed Low speed
Fan speed chart in 3 minutes after compressor starts up due to the ambient temp. and running
frequency:
Compressor frequency in
cooling
F<25Hz 25Hz<=F<45Hz 45Hz<=F
Over 28℃
Low speed High speed High speed
Tao
Below 28℃
Low speed Low speed High speed
Compressor frequency in
heating
F<25Hz
25Hz≤F<45Hz 45Hz≤f
Over 15℃
Low speed Low speed High speed
Tao
Below 15℃
Low speed High speed High speed
8.1.3 4-way valve control
The 4-way valve control in defrosting: refer to the defrosting procedure.
4-way valve control in other modes:
In heating mode, 4-way valve will open in 10 seconds before compressor starts up. When
compressor not startup or in non-heating mode, 4-way valve will close to ensure the compressor
has stopped for at least 2 minutes.
8.1.4 Outdoor defrosting control
A. Enter condition
In heating mode, compressor is running for 10 minutes contineously, or has run for 45 minutes in all
(when defrosting is over or entering the cooling mode, the counter will be cleared), by measuring the
defrosting sensor TE and outdoor ambient temp. sensor TA, if for 2 minutes the below conditions can
be met contineously, system will enter defrosting mode:
TE≤C×TA－α
Herein: C: TA＜0℃, C=0.8
TA≥0℃, C=0.6
α＝5:
Entering defrost temperature: -15℃≤C×TA－α≤-5℃
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