Daikin REYQ-AATJA, Service Manual, Page: 176 / 495

Outline of Control (Indoor Unit) SiUS372201EA
169 Part 4 Functions and Control
9.5.3 If the Float Switch is OFF with the Thermostat OFF in Cooling
Operation
 When the float switch turns OFF, the drain pump turns ON simultaneously.
 If the float switch remains OFF even after residual operation of the drain pump has ended, the
error code
A3 is displayed on the remote controller.
 The drain pump turns OFF once residual operation has ended, then turns ON again after 5
seconds.
9.5.4 If the Float Switch Turns OFF and ON Continuously, or the Float Switch
Turns OFF While AF Displayed
 When the float switch turns OFF, the drain pump turns ON simultaneously.

1: If the float switch continues to turn OFF and ON 5 times consecutively, it is judged as a drain
system error and the error code AF is displayed on the remote controller.

2: The drain pump continues to turn ON/OFF in accordance with the float switch ON/OFF even
after AF is displayed on the remote controller.

3: While the error code AF is displayed, if the float switch remains OFF even after the residual
operation of the drain pump has ended, the error code A3 will be displayed on the remote
controller.
O N
OFF
O N
O N
OFF
O N
OFF
5 min. 5 sec.
Float s w itch
Error display
Thermostat
(r u nning)
Drain p u mp
OFF
A3
OFF
OFF
O N
O N
O N
OFF
O N
OFF
5 min. 5 min. 5 min. 5 min. 5 min. 5 min. 5 sec. 5 min.
1st 2nd 3rd 4th 5th
AF A3
Float s w itch
Error display
Thermostat
(r u nning)
Drain p u mp
}
∗
1
∗
3
}
∗
2