Fujitsu ABYG18KRTA, Service Manual

Page: 178 / 196

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
18/22/24 model 50
30/36/45 model 30
Retry set number 3
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.
200
ms
1,500
ms
200
ms
2,000±100
ms
Compressor
4-way valve
power supply
4-way valve
polarity
4-way valve
switching
Heating mode
Cooling mode
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
Operation details
(If there is no one in the room for a while)
Cooling/Dry
The setting temperature is increased by maximum 2°C.
(Maximum setting temperature: 30°C)
Heating
The setting temperature is decreased by maximum 2°C.
(Minimum setting temperature: 16°C)
Auto
Energy saving function is performed automatically for the selected mode
(cooling/heating/dry).
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)
- (04-36) -
7. Various control
CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS