Mitsubishi SRK52HE Technical Manual page 27

(2) Dew condensation prevention control [Cooling (including automatic), cooling oriented dehumidifying operation]
(a) Operating condition: When the following conditions are met after 5 minutes or more of continuous operation after
operation starts.
• The humidity sensor value is 68% or higher
(b) Operation contents
1) Command of the electronic expansion valve.
2) When such a command is continued for 30 minutes or more, air direction
controls will be as listed below:
UP/DOWN air scroll
LEFT/RIGHT air scroll
(c) Reset condition: When the following condition is satisfied.
• The humidity sensor value is less than 63%.
(3) Indoor fan motor protection
When the air-conditioner is operating and the indoor fan motor is turned ON, if the indoor fan motor has operated at 300 rpm or
under for more than 30 seconds, the unit enters first in the stop mode and then stops the entire system.
Timer light illuminates simultaneously and the run light flashing 6 times at each 8-second.
(4) Three-minute forced operation
When the compressor begins operating the thermal operation is not effective for 3 minutes, so operation continues as is in the
operation mode. (After 3 minutes has passed the thermal operation is effective.)
However, stopping the compressor via a stop signal or protection control has priority.
(5) High-pressure control (During heating)
The indoor heat exchanger temperature sensor detection temperature controls the compressor.
¡ When the indoor heat exchanger
temperature is = > 58˚C
Compressor
Indoor heat exchanger temp. (˚C)
(6) Abnormality of outdoor unit
(a) Cooling operation
When the indoor heat exchanger temperature does not fall to 25°C or below for 40 minutes after 5 minutes have elapsed since
the compressor operation start, the abnormality stop occurs. (The timer light flashes 2 times.)
(b) Heating operation
1 The indoor heat exchanger temperature < 5°C for 5 minutes and more
The unit is stopped due to the outdoor unit abnormality excepting the defrost operation time. (The timer light flashes 2
times.)
2 5°C < = the indoor heat exchanger temperature < 30°C for 40 minutes and more
When the indoor heat exchanger temperature does not rise to 30°C or over for more than 40 minutes after 5 minutes have
elapsed since the compressor operation start, the abnormality stop occurs. However, when the indoor fan began operation
once, this function is not activated until the unit is stopped or the mode is changed. (The timer light flashes 2 times when
20 minutes have elapsed.)
Flap swing, UP/DOWN air scroll
Situations besides the ones described above Controls the level of the UP/DOWN flap.
Louver swing, LEFT/RIGHT air scroll,
Multi-directional Air Flow
Situations besides the ones described above Controls the front of the LEFT/RIGHT louver .
ON
OFF
58
48
Executes the command to the left.
Executes the command to the left.
25
- -
Prevention control
Reset
63 68
Humidity (%)