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7-4-3. Address Setup Procedure
Before setting the address, it is necessary to set the DIP-SW on the header outdoor unit interface P.C. board.
1. Follow the steps below to open the electrical control box cover
(1) Loosen the screws on the left and right side of the electrical control box cover.
(2) Remove the screw A for MMY-MUP1921.
(There is no screw A for MMY-MUP0721, MUP0961, MUP1201, MUP1441, MUP1681, MUP072H1 MUP096H1
and 120H1)
(3) Hold the lower side of the electrical control box cover to draw it toward you while lifting it up, and remove the
electrical control box cover.
2. Follow the steps below to set the DIP switch on the header outdoor unit interface P.C. board.
2-1. Header outdoor unit setting
Turn on DIP switch 1 of SW101 on the header outdoor unit interface P.C. boards*.
And, turn on DIP switch 2 of SW100. (Termination resistance of Uv line)
* Header outdoor unit setting is required also of an outdoor independent system.
Interface P.C. board on the header outdoor unit
Screw A
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Troubleshooting
