Daikin REYQ72-456XATJU, Service Manual

Page: 159 / 441

SiUS371901E Outline of Control (Indoor Unit)
Functions and Control 146
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 the 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.
OFF
OFF
ON
ON
ON
OFF
ON
OFF
5 min. 5 sec.
Float switch
Error display
Thermostat
(running)
Drain pump
A3
OFF
OFF
ON
ON
ON
OFF
ON
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 switch
Error display
Thermostat
(running)
Drain pump
}
∗
1
∗
3
}
∗
2