Mitsubishi Electric City Multi PQHY-P72 Service Handbook page 149

[ VII Control ]
-14- Operation Mode <PQHY>
(1) Indoor unit operation mode
The operation mode can be selected from the following 5 modes using the remote controller.
1 Cooling mode
2 Heating mode
3 Dry mode
4 Fan mode
5 Stopping mode
(2) Heat source unit operation mode
1 Cooling mode
2 Heating mode
3 Stopping mode
Note: When the heat source unit is performing a cooling operation, the operation mode of the connected indoor units that
are not in the cooling mode (Stopped, Fan, Thermo-OFF) cannot be changed to heating from the remote controller.
If this attempt is mode, "Heating" will flash on the remote controller. The opposite is true when the heat source unit
is performing a heating operation. (The first selection has the priority.)
All indoor units in operation are in cooling mode.
All indoor units in operation are in heating mode.
All indoor units are in fan mode or stopping mode.
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