Prevention To Restart For 3 Minutes (3 Minutes St); 4-Way Valve Control; Human Sensor For Energy Saving - Fujitsu ABYG18KRTA Service Manual

7-10. Prevention to restart for 3 minutes (3 minutes st)

When the compressor fails to start for the number of times below, it does not enter operation status
for 3 minutes.
Retry number
Retry set number
When the compressor fails to start in the retry set number above, the compressor is stopped.

7-11. 4-way valve control

• If heating mode is selected at the compressor start, 4-way valve is energized for heating.
• When the air conditioner is switched between cooling and heating mode, compressor is stopped,
and the 4-way valve is switched when the 3 minutes passes and the compressor is started.
4-way valve
4-way valve
4-way valve
power supply
Compressor

7-12. Human sensor for energy saving

If no one enters the room for the set time, the set temperature is automatically controlled. (When
someone comes back into the room, the human sensor detect this, and automatically revert to the
original settings.)
Operation mode
Cooling/Dry
Heating
Auto
Details about detection with the human sensor:
The human sensor detects whether there are people in the room by looking for movement by people
in the room.
7-10. Prevention to restart for 3 minutes (3 minutes st)
18/22/24 model
30/36/45 model
switching
polarity
200
ms
The setting temperature is increased by maximum 2°C.
The setting temperature is decreased by maximum 2°C.
Energy saving function is performed automatically for the selected mode
Heating mode
Cooling mode
1,500 200
ms ms
Operation details
(If there is no one in the room for a while)
(Maximum setting temperature: 30°C)
(Minimum setting temperature: 16°C)
(cooling/heating/dry).
- (04-36) -
50
30
3
2,000±100
ms
7. Various control