Mitsubishi Electric MSC-A07WV-E1 Service Manual page 123

Q Q The other cases
1
Indoor unit dose not operate. (different modes)
• When you try to run two indoor unit simultaneously, one for cooling and the other for heating, the unit which
transmits signal to the outdoor units earlier decides the operation mode. The other unit indicates as shown in
the figure below.
• When the above situation occurs, set all the indoor units to the same mode, turn OFF the indoor units, and
then turn them back ON.
• Though the top of the indoor unit sometimes gets warm, this does not mean malfunction. The reason is that
the refrigerant gas continuously flows into the indoor unit even while it is not operating.
OPERATION INDICATOR
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<MXZ-A18WV>
Lighting Flashing
123