Operation Mode - Mitsubishi Electric PURY-M200YNW-A1 Service Handbook

[5-2 Outdoor Unit Control ]
5-2-13

Operation Mode

(1) Indoor unit operation mode
The operation mode can be selected from the following 6 modes using the remote controller.
1 Cooling mode
2 Heating mode
3 Dry mode
4 Automatic cooling/heating
mode
5 Fan mode
6 Stopping mode
(2) Outdoor unit operation mode
1 Cooling only mode
2 Heating only mode
3 Cooling main mode
4 Heating main mode
5 Stopping mode
When units in cooing and heating coexist, the operation mode (cooling main mode or heating main mode) will be determined,
based on the refrigerant pressure in the R2 refrigerant circuit and speed variation data.
(3) Operation pattern for automatic cooling/heating mode
When the automatic cooling/heating mode is selected from remote controller functions, the indoor temperature will be detect-
ed in pattern as shown in the figure below, and the operation mode (cooling or heating) will automatically be selected.
When it detects more than 1.5 degrees difference against set temperature for more
than 3-min continuously, operation mode change to cooling mode.
+1.5ºC
*If it comes under 1.5 degrees difference again, it need to count 3 minutes from at that time.
+1ºC
Cooling
+0.5ºC
Set temp
-0.5ºC
-1ºC
-1.5ºC
(4) Relationship between the operation mode and the load capacity (kW) (within a system)
Cooling load
capacity
Cooling load Heating load
+
capacity capacity
20
- chapter 5
All indoor units in operation are in cooling mode.
All indoor units in operation are in heating mode.
Coexistence of units in cooling and heating modes.
Coexistence of units in cooling and heating modes.
All indoor units are in fan mode or stopping mode.
Cooling
Cooling
Fan Fan
Fan
Heating
Switches to heating mode
3 minutes
100(%)
Cooling load
X100 = Cooling
load (%)
0
Cooling only
mode
Fan
Fan Fan
Heating
Heating
When it detects more than 1.5 degrees difference against set temperature
for more than 3-min continuously, operation mode change to heating mode.
*If its over 1.5 degrees difference again, it need to count 3 minutes from that time.
Heating load
Cooling main Heating main Heating only
mode mode mode
Total heat recovery mode
3 minutes
Switches to cooling mode
Cooling
Cooling
Fan
0
Heating load
capacity
Heating =
Cooling load Heating load
load (%)
+
capacity capacity
100(%)
X 100
BS_05_M