Mitsubishi Heavy Industries SRK60ZJX-S, Technical Manual

Page: 144 / 272

- 143 -
'10 • SR-T-091
(9) Outline of cooling operation
(a) Operation of major functional components in Cooling mode
(b) Detail of control in each mode (Pattern)
1) Fuzzy operation
During the fuzzy operation, the air flow and the compressor speed are controlled by calculating the difference between
the indoor temperature setting correction temperature and the retum air temperature.
ON OFF OFF
OFF OFF OFF
ON
OFF
(few minutes ON)
OFF
(few minutes ON)
ON ON OFF
Thermostat ON Thermostat OFF Failure
Cooling
Compressor
Indoor fan motor
Outdoor fan motor
4-way valve
12~86rps
12~86rps
12~58rps
12~38rps
SRF50ZJX-S
20~104rps
20~104rps
20~70rps
20~46rps
SRF35ZJX-S
20~72rps
20~72rps
20~48rps
20~34rps
SRF25ZJX-S
Model
Fan speed
Auto
MED
HI
LO
27.5
25.5
19.5
18
30
(10) Outline of automatic operation
(a) Determination of operation mode
The unit checks the indoor air temperature and the outdoor air temperature, determines the operation mode, and then begins in
the automatic operation.
Heating
Dehumidifying
Cooling
Indoor air temperature (˚C)
Outdoor air temperature (˚C)
(b)
The unit checks the temperature every hour after the start of operation and, if the result of check is not same as the previous
operation mode, changes the operation mode.
(c)
When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is selected
during heating, cooling or dehumidifying operation, the unit is operated in the previous operation mode.
(d)
Setting temperature can be adjusted within the following range. There is the relationship as shown below between the signals
of the wireless remote controller and the setting temperature.
Signals of wireless remote controller (Display)
–6 –5 –4 –3 –2 –1 ± 0 +1 +2 +3 +4 +5 +6
Setting
temperature
Cooling 18 19 20 21 22 23 24 25 26 27 28 29 30
Dehumidifying 19 20 21 22 23 24 25 26 27 28 29 30 31
Heating 20 21 22 23 24 25 26 27 28 29 30 31 32
Unit : ºC