Daikin 3MKS50E3V1B Service Manual page 112

Indoor Unit Control (SA Models)
2.1.3 When the Float Switch is Tripped During Heating Operation:
Thermostat
(running)
Humidifier
Float switch
Drain pump
During heating operation, if the float switch is not reset even after the 5 minutes operation, 5
seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset.
2.1.4 When the Float Switch is Tripped and AF is Displayed on the Remote
Controller:
Remote
controller display
Float switch
Drain pump
∗1: 5min
∗4. (Malfunction residual):
If the float switch is tripped 5 times in succession, a drain malfunction is determined to have
occurred. AF is then displayed as operation continues.
∗5. (Malfunction residual):
The remote controller displays A3 and the air conditioner comes to an abnormal stop if the float
switch is OFF for more than 5 minutes in the case of ∗4.
100
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
ON
1st time 2nd time
ON
OFF
∗1 ∗1
The remote controller displays A3 and the indoor unit stops.
5 min. 5 sec. 5 min.
AF display (running)
3rd time 4th time 5th time
∗1 ∗1 ∗1 ∗1
∗4
SiBE121135
Reset
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 sec.
∗1
∗5
(R15615)
Function and Control
(R16094)