Outline Of Cooling Operation - Mitsubishi Heavy Industries SRK20ZD-S1 Technical Manual

(h) Forced defrost
(i) Forced defrost operation can be performed only once time within 20 second, after the power source is turned on, in accor-
dance with the following operation.
1) Remote control operation
Operation
Operation mode
Set temperature
Fan speed select
Air flow setting
On timer
Current time
On timer time
(ii) If remote control operation is performed, for 1 minute after 3-minute timer operation, the operation is canceled if one of the
following conditions is satisfied.
1 Outdoor heat exchanger temperature sensor: 14ºC or higher
2 10 minutes has passed (including the 1 minute of forced operation).
(i) ECONOMY operation ( "ECONO" button on the remote control : ON)
The set temperature changes as shown at right and the
indoor unit fan runs at speed 5.

(9) Outline of cooling operation

(a) Operation of major functional components
Functional
components
Indoor fan motor
Flap and louver
Display
Outdoor fan motor
4-way valve
Electric expansion valve
(b) Fan speed switching
Fan speed switching
Flow control
Air scroll
Swing flap or louver
Swing stop
(i) Auto fan control
The indoor fan is automatically controlled in accordance with the difference between the room temperature (detected by the
room temperature sensor) and the termostat setting as shown below.
Run
Heating
19˚C
Low
Up/down swing
ON
On after 180 min.condition
Item
When the compressor
command is OFF
ON
ON or OFF
Lights up
Depending on the stop mode
AUTO
Auto fan control
Speed 4
+1
Thermostat setting point
2) Functional components operation
Compressor
4-way valve
Indoor unit fan
Flap and louver
Outdoor unit fan
Display
Running time
Running start ~ 1 hour
1~2 hours
2 hours ~
When the compressor
command is ON
ON
ON or OFF
Lights up
ON
OFF
Depending on the EEV control
HIGH
Speed 8
Speed 8
Speed 8
Speed 8
Speed 6
+2 +3 +4
228
- -
ON
OFF
OFF
Fully closed
OFF
Same as defrost
Set temperature compensation
Set temperature -1.0
Set temperature -2.0
Set temperature -2.5
When the compressor goes
OFF due to an anomalous stop.
OFF
Stop position control
Lights up or flashes
Depending on the stop mode
MED LOW
Speed 6 Speed 4
Speed 6 Speed 4
Speed 6 Speed 4