Function Of Ffq Series; Drain Pump Control - Daikin 2MXS-N Series Service Manual

Function of FFQ Series

2. Function of FFQ Series

2.1

Drain Pump Control

2.1.1 Normal Operation
2.1.2 If the Float Switch is ON with the Thermostat ON in Cooling Operation
Error display
∗1: If the float switch turns OFF again during the residual operation of the drain pump, cooling
∗2: If the float switch remains ON even after the residual operation of the drain pump has ended,
∗3: The drain pump turns OFF once residual operation has ended, then turns ON again after 5
∗4: After A3 is displayed and the unit comes to an abnormal stop, the thermostat will remain OFF
54
ON
Float switch
OFF
ON
Thermostat
(running)
OFF
ON
Error display
OFF
ON
Drain pump
OFF
The float switch is OFF in normal operation.
When cooling operation starts (thermostat ON), the drain pump turns ON simultaneously.
After the thermostat turns OFF, the drain pump continues to operate for another 5 minutes.
The aim of residual operation after thermostat OFF is to eliminate the dew that condenses on
the indoor heat exchanger during cooling operation.
ON
Float switch
OFF
ON
Thermostat
(running)
OFF
ON
OFF
ON
Drain pump
OFF
When the float switch turns ON, the thermostat turns OFF simultaneously.
After the thermostat turns OFF, the drain pump continues to operate for another 5 minutes.
operation also turns on again (thermostat ON).
the error code A3 is displayed on the remote controller.
seconds.
even if the float switch turns OFF again.
5 min.
∗1
5 min. 5 sec. 5 min.
(R21088)
∗2
∗4
∗3
A3
5 sec.
(R22380)
Function and Control
SiUS121502E