Airwell YFAD-100R-01M25, Technical Manual

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 Page 60 
1.5.5 Condenser Temperature Protection
When condenser temperature is more than setting value,
the compressor ceases operations.
1.6 Heating Mode(Heat pump models)
1.6.1 Compressor Control
• Once the compressor starts up, it keeps running 7
minutes, then it will follow the below rules:
• When T1-Ts is higher than setting value, the
compressor and outdoor fan cease operations.
When T1-Ts is lower than setting value, the
compressor and outdoor fan restart up.
1.6.2 Indoor Fan Control:
• When the compressor is on, the fan speed can be set
to high, medium, low, or auto..And the anti-cold wind
function has the priority.
• The auto fan acts according to the value of T1-
TS+
∆
T2.
1.6.3 Outdoor Fan Control:
• For single-fan outdoor units, the outdoor fan will
run following the compressor except when AC is in
evaporator high temperature protection in heating
mode ,condenser high temperature protection in
cooling mode, defrosting mode and the current
protection.
• For double-fan units, the outdoor fans will run
according to T4.
1.6.4 Defrosting mode
• The unit enters defrosting mode according to changes
in the temperature value of T3, the temperature value
of T4 as well as the compressor running time.
• If any one of the following conditions is satisfied,
defrosting ends and the machine switches to normal
heating mode:
• T3 rises above TE18 °C .
• The unit runs for 10 minutes consecutively in
defrosting mode.
• Operation mode is changed to other modes
1.6.5 Evaporator Temperature Protection
When the evaporator temperature exceeds a preset
protection value, the compressor and outdoor fan cease
operations.
1.7 Auto Mode
• This mode can be selected with the remote controller
and the temperature setting can be adjusted between
17
℃
~30
℃
• In auto mode, the machine selects cooling, heating, or
fan-only mode on the basis of △ T ( △ T =T1-Ts).
∆
T Running mode
∆
T>2 ℃ Cooling
-1 ℃
≤∆
T
≤
2 ℃ Fan-only
∆
T<-1 ℃ Heating*
Heating*: In auto mode, cooling only models run the fan.
• Indoor fans run at the auto fan speed of the relevant
mode.
• The louver operates the same as in relevant mode.
• If the machine switches mode between heating and
cooling, the compressor pauses for a certain period of
time intermittently and then selects a mode based on
T1-Ts.
• If the setting temperature is modified, the machine
selects a new running function.
1.8 Drying Mode
• Indoor fan speed is fixed at low and cannot be
changed.
• All protections are activated and operate the same as
they do in cooling mode.
1.9 Timer Function
• The timing range is 24 hours.
• Timer On. The machine turns on automatically at the
preset time.
• Timer Off. The machine turns off automatically at the
preset time.
• Timer On/Off. The machine turns on automatically at
the preset On Time, and then turns off automatically
at the preset Off Time.
• Timer Off/On. The machine turns on automatically at
the preset Off Time and then turns off automatically at
the preset On Time.
• The timer does not change the unit operation mode.
If the unit is off now, it does not start up immediately
after the “timer off” function is set. When the setting
time is reached, the timer LED switches ioff and the
unit running mode remains unchanged.
• The timer uses relative time, not clock time
1.10 Sleep Function
• The sleep function is available in cooling, heating, or
auto mode.
• The operational process for sleep mode is as follows:
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oduct Featur
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