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

(9) Outline of cooling operation

(a) Operation of major functional components in Cooling mode
Functional
components
Indoor fan
Flap and louver
Display
Outdoor fan motor
4-way valve
Electronic expansion valve
(b) Air flow selection
(i) Speed of inverter changes within the range of selected air flow.
Air flow selection
Inverter command speed
Auto
Air flow
Inverter command speed
HI
Air flow
Inverter command speed
MED
Air flow
Inverter command speed
LO
Air flow
Inverter command speed
ULO
Air flow
(ii) When any protective function actuates, the operation is performed in the mode corresponding to the function.
(iii) Outdoor blower is operated in accordance with the inverter command speed.
(c) Detail of control in each mode (Pattern)
(i) Fuzzy operation
During the fuzzy operation, the air flow and the inverter command speed are controlled by calculating the difference between
the room temperature setting correction temperature and the suction air temperature.
(ii) Cooling thermostat operation
1) Operating conditions
During the cooling fuzzy operation or when the inverter command speed obtained by the fuzzy calculation is less than
-24 rps.
2) Detail of operation
Item
Inverter command speed
Indoor fan motor
Outdoor fan motor
(iii) Cooling "HIGH POWER" operation (HI POWER button on remote control: ON)
The unit is operated continuously for 15 minutes regardless of the setting temperature.
1) Detail of operation
Item
Inverter command speed
Indoor fan motor
Outdoor fan motor
Notes (1) Protective functions will actuate with priority even during the "HIGH POWER" operation.
(2) Room temperature is not adjusted during the "HIGH POWER" operation
Item
When the inverter
speed is 0rps
ON
ON or OFF
Lights up
Depending on the stop mode
Model
Model
Model
SRK63ZE-S1
When the inverter speed
is other than 0rps
ON
ON or OFF
Lights up
ON
OFF
Depending on the EEV control
SRK63ZE-S1
12~64rps
Depends on inverter command speed.
12~64rps
8th speed fixed
12~54rps
6th speed fixed
12~40rps
4th speed fixed
12~30rps
2nd speed fixed
SRK63, 71ZE-S1
0 rps [Comp. stopped]
Corresponds to fan speed switch.
Stop
64 rps
8th speed
6th speed
86
- -
When the inverter speed is 0rps
due to an anomalous stop
OFF
Stop position control
Lights up or flashes
Depending on the stop mode
SRK71ZE-S1
12~74rps
12~74rps
12~62rps
12~44rps
SRK71ZE-S1
74 rps