Mitsubishi Electric CITY MULTI Mr. Slim PAR-SL100A-E Operation Manual page 16

5. Special Operation
panel
4
D
3
D
4 5
Fig. 5-3
<When remote operation by other remote controllers is prohibited>
<When a wireless remote controller is operated during central control>
7. Troubleshooting
<When the indoor unit beeps 4 times and the operations are ineffective>
16