Mitsubishi SCM40ZS-S, Техническое руководство

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Indoor unit operation mode
Stop
(1)
COOL DRY FAN
(2)
HEAT
Compressor ON Control A
Compressor OFF Control B
(14) 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.
Note (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.)
(15) 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.
(b) Outline of control
(i) Indoor unit fan speed and compressor are controlled by the area which is selected by the temperature difference.
(ii) The indoor unit check the current area by every 5 minutes, and operate by the next checking.
(c) Other
When the outdoor air temperature and room temperature is low for cooling operation, indoor unit can not operate in cool-
ing, and dehumidifying. In this case, the units operate in heating to rise the room temperature, and after that start DRY
operation.
Indoor unit fan speed
Area
D C B A
Me speed
Indoor unit
fan speed ULo(Lo) speed
STOP
Limited
䠄
Lower than
normal cooling operation
䠅
Compressor Limited
speed Minimum
䠄
Lower than the speed in ”Area A”
䠅
STOP
Setting temperature
Difference between setting temperature and return temperature
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'16 • SCM-T-199