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SiUS121827E SA Indoor Unit Functions
Part 4 Functions and Control 95
If Float Switch is OFF with Thermostat OFF in Cooling Operation
When the float switch stays OFF for 5 sec., the drain pump turns ON.
If the float switch remains OFF even after the residual operation of the drain pump has ended,
the error code A3 is determined.
The drain pump turns OFF once residual operation has ended, then turns ON again after 5
seconds.
If Float Switch Turns ON and OFF Continuously, or Float Switch Turns OFF While AF Displayed
When the float switch stays OFF for 5 sec., the drain pump turns ON.
OFF
OFF
ON
ON
ON
OFF
ON
OFF
5 min.
5 sec.5 sec.
5 min. 5 min.
5 sec.
(R24611)
Float switch
Error display
Thermostat
(running)
Drain pump
A3
(R24370)
OFF
Float Switch
ON
ON
Thermostat
(running)
OFF
ON
A3AF
Error Display
OFF
ON
Drain Pump
OFF
1st
5 sec. 5 sec. 5 sec. 5 sec.
4th 5th
5 sec.
5 min. 5 min.
5 sec.
5 min. 5 min.
5 sec.
5 min. 5 min.
5 sec.
5 min. 5 min.
5 sec. 5 sec.
5 min. 5 min.
∗1 ∗2 ∗3
5 sec.
∗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 determined.
∗2. The drain pump continues to turn ON/OFF in accordance with the float switch ON/OFF
even after AF is determined.
∗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 determined.
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