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1089 Error Code For Unimog Tractor Models

There are 3 kind of error description.

Description:

12VH1 voltage supply to the hitch raise and lower coils is low. (possible blown fuse*)
Programmable UP/DOWN switch is failed.
Programmable UP/DOWN switch is failed.

Hissing noise at expansion valve, Loss of refrigerant.Restriction in refrigerant system.Check receiver-dryer for uniformity of temperature.

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