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Air Conditionner Answered

After lightning air conditionner stop working completely dead 
Friedrich minisplit MR12C1E
I did replaced the burned fuse and a varistor 

now the inside unit start open loovers start the fan after 3 minutes  gren led flashe and unit stop 

seam to be comming from the timer 
try to set timer to OFF loke like the unit does'nt accept the command from the remote control 

is it a deffective mpu ? 
how to check if mpu is good ?



Oh my. I didn't understand that at all.

Thanks anyway for reading it