Mitsubishi Electric CITY MULTI PUHY-P108 Service Handbook page 171

[ VII Control ]
-19- Operation Mode <PUHY>
(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) Outdoor unit operation mode
1 Cooling mode
2 Heating mode
3 Stopping mode
Note: When the outdoor 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 outdoor unit is per-
forming 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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