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SiUS28-902_B
Other Control
Function
27
5. Other Control
5.1
Heating Operation Prohibition
Heating operation is prohibited above 82°FDB outdoor air temperature.
6. Outline of Control (Indoor Unit)
6.1
Drain Pump Control
The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure
below).
6.1.1 When the Float Switch is Tripped while the Cooling Thermostat is
ON:
Note:
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. (Error 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 thermostat is ON.
6.1.2 When the Float Switch is Tripped while the Cooling Thermostat is
OFF:
Note:
3. (Error 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 thermostat is OFF.
ON
ON
ON
OFF
OFF
OFF
Thermostat
(running)
Float switch
Drain pump
Remote controller "
A3
" flashing error stop
∗
1) Normal operation
∗
2) Error residual
5 min.
5 min. 5 sec.
ON
ON
ON
OFF
OFF
OFF
∗
3
Thermostat
(running)
Float switch
Drain pump
5 min.
5 min.
5 sec.
5 sec.
Remote controller "
A3
" flashing error stop
Enters error treatment if the float switch is not reset within 5 minutes.