Function Of Sa Indoor Unit; Drain Pump Control - Daikin 2MXS40H2V1B Service Manual

Function of SA Indoor Unit

2. Function of SA Indoor Unit

2.1

Drain Pump Control

2.1.1 When the Float Switch is Tripped While the Cooling Thermostat is
ON:
Thermostat
Float switch
Drain pump
∗1. (Normal operation):
The purpose of residual operation is to completely drain any moisture adhering to the fin of the
indoor heat exchanger when the thermostat goes off during cooling operation.
∗2. (Malfunction residual):
The remote controller displays " A3 " and the air conditioner comes to an abnormal stop in 5
minutes if the float switch is turned OFF while the cooling thermostat is ON.
2.1.2 When the Float Switch is Tripped While the Cooling Thermostat is
OFF:
Thermostat
(running)
Float switch
Drain pump
∗3. (Malfunction residual):
The remote controller displays " A3 " and the air conditioner comes to an abnormal stop if the float
switch is turned OFF and not turned ON again within 5 minutes while the cooling thermostat is
OFF.
83
ON
OFF
(running)
OFF
ON
ON
OFF
∗1) Normal operation
ON
OFF
OFF
ON
ON
OFF
5 min.
∗2) Malfunction residual
The indoor unit enters malfunction treatment if the float switch is not
reset within 5 minutes.
The remote controller displays A3 and the indoor unit stops.
5 min. 5 sec. 5 min. 5 sec.
∗3
SiBE121123_A
The remote controller displays A3
and the indoor unit stops.
5 min. 5 sec.
Function and Control
(R16092)
(R16093)