7
5 Electronic function(For remote
control models)
5.1 Terms and definitions
TA: Temperature of indoor ambient (T1)
TE: Temperature of evaporator (T2).
TC: Temperature of condenser (T3).
TO: Temperature of outdoor ambient (T4)
TS: The set temperature.
DAHT: Sensor of heater(T5)
5.2 Protection function
1. The compressor restart protection functions with a
delay of 3 minutes.
2. Sensor redundancy and automatic shutoff.
5.3 Auto mode
In Auto mode, the unit will choose cooling or
fan-only mode according to ΔT(ΔT =TA-Ts)
5.4 Fan-only mode
1. The temperature can’t be controlled at the mode,
and the room ambient temperature is display on LED.
The temperature only display 32 to 99 ℉(0 to 37℃), lf
out of range will display LO or HI.
2. The Ion/ Timer functions are valid at the fan-only
mode.
3. Auto fan: In fan-only mode, AC operates the same
as auto fan in cooling mode with the temperature set
at 24°C(75°F).
5.5 Cooling mode
1. The temperature can be set from 62 to 86℉(17 to
30℃)
2. Compressor Control
The compressor operates as below:
(TA-Ts)℉
+2
0
Operation conditon
compressor off with a delay of 1 minute
compressor on
When TA≤TS, compressor off
When T1>TS+2℉, compressor on
3. Fan Control
In cooling mode, the indoor fan operates continuously.
The fan speed can be set to high, medium or low.
• The auto fan acts as below rules:
TA-TS( F)
High
Medium
Low
2.5
-1
0
o
4. Auto-defrosting function protection as below:
When TE is lower, it means that the evaporator frosts.
Then the unit starts defrosting, and the indoor fan
keeps working at the moment. When the temperature
is up, the unit stops defrosting.
TE ℉
55
30
compressor off
when TE is lower than 30℉
lasting for 5 seconds
compressor on
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