Midea MSMBB-12HRFN1-MU0W

Troubleshooting
 Page 81 
Heavy load condition
Loosen hold down bolts and / or screws
Bad airproof
The air inlet or outlet of either unit is blocked
Interference from cell phone towers and remote
boosters
Shipping plates remain attached
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Check heat load
Tighten bolts or screws
Close all the windows and doors
Remove the obstacles
Reconnect the power or press ON/OFF button on remote control to restart
Remove them
Others