Drain Pump Control - Daikin RTSQ20PY1 Service Manual

Outline of Control (Indoor Unit)
9.3

Drain Pump Control

1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure
9.3.1 When the Float Switch is Tripped while the Cooling Thermostat is
ON:
Thermostat
Float switch
Drain pump
∗
1. (Normal operation):
The objective of residual operation is to completely drain any moisture adhering to the fin of the
indoor unit heat exchanger when the thermostat goes off during cooling operation.
∗
2. (Malfunction residual):
The remote controller will display "A3" and the air conditioner will come to an abnormal stop in 5
minutes if the float switch is turned OFF while the cooling thermo. is ON.
9.3.2 When the Float Switch is Tripped while the Cooling Thermostat is
OFF :
Thermostat
(running)
Float switch
Drain pump
*3. (Malfunction residual):
The remote controller will display "A3" and the air conditioner will come to an abnormal stop if
the float switch is turned OFF and not turned ON again within 5 minutes while the cooling
thermo. is OFF.
121
below).
ON
(running) OFF
OFF
ON
ON
OFF
*1) Normal operation
ON
OFF
OFF
ON
ON
OFF
5 min.
*2) Malfunction residual
Enters malfunction treatment if the float switch is not reset within 5 minutes.
Remote controller "A3" flashing malfunction stop
5 min. 5 sec. 5 min.
5 sec.
*3
SiBE31-801_C
Remote controller "A3" flashing
malfunction stop
5 min. 5 sec.
Function