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165
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'17 • SCM-T-225
(12) Determining the operating mode
The cooling and heating operating modes are the wireless remote control mode that have been previously determined.
If a mode differing from these is selected after this, the selected mode will appear in the display of the wireless remote control,
but only the fan will operate.
A unit
B unit
COOL
COOL
FAN
HEAT
HEAT
FAN
Cooling
switch
ON
Heating
switch
ON
Heating
switch
ON
Cooling
switch
ON
Heating
switch
ON
Operation Operation
Operation Operation
Operation
Example of operating pattern
Note (1)
〔〕
indicates currect operation.
First operation
Second operation
Notes
Selected mode
Cooling
Heating
Example
1
2
Remote control display
COOL
HEAT
Operation
COOL
HEAT
Selected mode
Heating
Cooling
Remote control display
HEAT
COOL
• Different mode is
only fan operation.
Operation
FAN
(1)
FAN
Note (1) If the display shows heating and the operation is fan, Hot keep will operate.
Indoor unit operation mode
Stop
(1)
COOL
DRY
FAN
(2)
HEAT
Compressor ON
Control A
Compressor OFF
Control B
(13) Drain pump abnormalities detection (SRR series only)
(a)
Drain motor (DM) is operated during the cooling or dehumidifying mode operations and simultaneously wity the compres-
sor ON. The DM continues to operate for 5 minutes after the operation stop, anomalous stop, thermostat stop or when it
was switched from the COOL and DRY operations to the fan or HEAT operation.
Notes (1) Inciuding the stop from the cooling, dehumidity-
ing, fan and heating, and the anomalous stop
(2) Inciuding the “FAN” operation according to the
mismatch of operation modes
(i) Control A
1) If the float switch detects any anomalous draining condition, the unit stops with the anomalous stop and the
drain pump starts. After detecting the anomalous condition, the drain motor comtinues to be ON.
2) It keeps operating while the float switch is detecting the anomalous condition.
(ii) Control B
If the float switch detects any anomalous drain condition, the drain motor is turned ON for 5 minutes, and at 10
seconds after the drain motor OFF it checks the float switch. If it is normal, the unit is stopped under the normal
mode or, if there is any anomalous condition, displayed by the flashing of display lights and the drain motor is
turned ON. (The ON condition is maintained during the drain detection.)
(14) Outline of dehumidifying (DRY) operation
(a) Purpose of DRY mode
The purpose is "Dehumidifying", and not to control the humidity to the target condition.
Indoor/outdoor unit control the operation condition to reduce the humidity, and also prevent over cooling.
