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User manual
Split wall air conditioner - VERSU W
PART 4. TROUBLESHOOTING
1. SYMPTOMS THAT DO NOT INDICATE DEVICE FAILURE
Symptoms that do not indicate device failure
The following phenomena may occur during the correct operation of the device.
1. Air conditioner protection system.
Compressor protection
• The compressor cannot start running for 3-4 minutes after it is finished.
Cold air flow prevention (cooling and heating units only)
• The unit is designed not to blow out cold air during heating operation when the heat exchanger is
in one of the following situations and the set temperature is not reached.
A) The heating process has only just started.
B) Defrosting process is running.
C) The outside temperature is outside the operating range of the device.
• The fan of the indoor and outdoor units stops during the defrosting process (Cooling & Heating
units only).
Defrosting (cooling and heating units only)
• Frost that appears on the outdoor unit during heating operation in low outdoor temperature and
high air humidity can significantly reduce the performance of the unit.
• In this case, the unit will stop heating and go into defrosting mode.
• Defrosting time can vary from 4 to 10 minutes depending on the outside temperature and the
amount of frost formed.
2. White fog escaping from the indoor unit
• Due to the large temperature difference between the air inlet and outlet, and the high relative humidity,
fog may come out of the indoor unit in cooling mode.
• Fog may also occur during heating operation, due to the heating of defrost water.
3. Suspicious sounds
• During operation, or immediately after stopping the compressor, you may hear a slight hissing sound.
This sound is produced by the flowing refrigerant.
• You may also hear a faint „shooting” noise during operation or right after the compressor stops. This
is due to the thermal expansion of the plastic parts of the device, which are affected by changing
temperatures.
• After connecting the indoor unit to the power supply, the noise of the louvers returning to the position
before the power was disconnected may be heard.
4. Dust blown out of the air conditioner
This is a natural phenomenon that occurs after a long time of not using it, or when you first turn on the air
conditioner.
5. Specific smells emanating from the indoor unit
The air conditioner emits smells that have penetrated it from building materials, furniture or cigarettes.
6. The air conditioner automatically changes the operation mode from cooling or heating (only for
cooling and heating units) to ventilation
When the set temperature is reached, the compressor turns off and the air-conditioner enters the
ventilation mode. The compressor will restart when the temperature increases during cooling or drops
Summary of Contents for VG26W
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