Vaillant V 12-025 HWI, Training Manual, Page: 38 / 48

Split Type Installation Manual
38
9 PCB Explanation
9.2.2 Functions:
Automatic mode:
1. The range of setting temperature: 16ºC - 32ºC (As for
the Jingling common remote controller, the setting
temperature is just 25ºC and not adjustable);
2. The air conditioner will enter automatic mode(the
default temperature is 25ºC) if you press “Emergency
running” key in standby state or set that the
conditioner will be started by the controller in
automatic mode.
3. Entering the automatic mode, the indoor fan runs for
20 seconds with low speed, and then runs in the
mode which is depended on the room temperature.
Indoor
temperature
Tr-Ts<-4ºC
-4ºC�Tr-
Ts�1ºC
1ºC<Tr-Ts
Running
mode
Heating Ventilating Cooling
Note!
Cooling only unit: The heating mode is replaced by
ventilation mode.
Double-temperature unit: The ventilation function
is available.
The wind speed is adjustable in automatic mode.
4. Once the running mode is fixed on, it won’t be altered
with the indoor changing temperature. At the
moment, you can switch the mode by manual and the
compressor will be idle for 3 minutes for protection.
5. Compressor working condition: it is depended by the
running mode.
6. Four-way valve working condition: it is depended by
the running mode.
7. Outdoor fan working condition: it is depended by the
running mode.
Cooling mode:
1. The range of setting temperature: 16ºC - 32º
2. Compressor working condition: In the cooling
operation mode, the temperature curve of the
compressor is as below:
3. Outdoor fan working condition: In the cooling mode,
the outdoor fan keeps running!
4. Indoor fan working condition: The state of indoor fan
working and setting wind speed can be referred to
the following table:
Remote contro-
ller type
The working
air-flow rate
(set by the remo-
te
Controller)
The working
air-flow rate of
indoor fan
Any model
HI High wind
MED Mid wind
LO Low wind
AUTO See the following curve
When the AUTO mode is selected, the indoor fan
working condition is as the following curve:
Note!
When the sensor of indoor temperature goes
wrong, Tr is 25ºC
in the automatic mode.
5. Four-way valve working condition: The four-way valve
is always closed in the cooling mode.
6. The working condition of outdoor air door. As for the
position of air door, there are the following
definitions:
The position of the air door in full opening is 0°; The
angle between full opening and full closing position is
190°.
• When the air conditioner is powered up, the air
door turns to the full opening position firstly, and
then turns back 92° and closed.