Mitsubishi Heavy Industries SRK20HD-S Technical Manual page 21

(c) Operation of functinal components during defrosting operation
Compressor command
Indoor unit fan
Operating lamp
Outdoor unit fan
4-way valve
Defrost start operation
(8) Forced Defrost
(a) During trial operation, if defrost operation is performed, defrost operation can be performed only once time, in accordance
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
(b) 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 liquid pipe thermistor temperature: 14ºC or higher
2 10 minutes has passed (including the 1 minute of forced operation).
(9) ECONO operation ( "ECONO" button on the remote controller : ON)
The set temperature changes as shown at right and the
indoor unit fan runs at speed 3.
ON
OFF
Hot keep
ON
OFF
Lit
Flashes
ON
OFF
ON
OFF
Defrost operation
120 sec.
Run
Heating
19˚C
Low
Swing
ON
On after 180 min.condition
Hot keep
120 sec.
Recovery
temperature
(9ºC)
2) Functional components operation
Compressor
4-way valve
Indoor unit fan
Flap
Outdoor unit fan
Display
Running time
Running start ~ 1 hour
1~2 hours
2 hours ~
19
- -
Controlled by the indoor heat
exchanger temperature
The chart at left is for reference.
Hot keep control governs operation
during heating.
Operation after defrost is ended.
Normal heating operation
(defrost recovery)
ON
OFF
OFF
Fully closed
OFF
Same as defrost
Set temperature compensation
Set temperature -1.0
Set temperature -2.0
Set temperature -2.5