Mitsubishi Electric Owners Manual - Enlarge page 1 of 5
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From inside (document excerpt):
PAC-SF48MA-E This manual is written only for the models PU(H)-P1.6 3VGA , PU(H)-P1.6 6YGA, PU(H)-P1 4VGAA, PU(H)- P1.6 6YGAA, and PUH-P8,10YE, MODELS PU H -P1.6 3VGA, PU H -P1 4VGAA PU H -P1.6 6YGA, PU H -P1.6 6YGAA PUH-P8, 10YE The installation must be done by dealer or qualified person. The wiring must be securely done by using proper cable. The wires should be connected to the terminals not to have external force of the cable.
The installation must be done in accordance with this manual. The termial cover (panel) of the unit must be installed securely. Never try any modification. The electric installation must be done by qualified person in accordance with this installation manual. Use the separate circuit only for this machine and use rated voltage and circuit breaker. Never move or reinstall the machine by the customers. Install a circuit breaker depending upon the location. Put ground wire. Use standard wires which meet current capacity. Use proper fuses Wires must not have tension. Turn the power on 12 hours or more before operation. Never operate the switches with your hand wet. Never touch refrigerant pipes while the machine running. Never operate the machine without panel or guard off. Never operate the machine without air filter off. Never turn the power off as soon as the machine stops. SW1 settings M-NET communication LED3,4 display contents Inter-board communication Blinks every 1.5 second SW1 settings M-NET communication LED3,4 display contents Inter-board communication Blinks every 1.5 second