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387 Error Code For Wallis Tractor Models

There are 2 kind of error description.

Description:

Decelerator or Hand Throttle (STD cab) 5 Volt Supply voltage is too high
Foot Throttle 5 Volt Supply voltage is too high (engine controller pin B29)

If Failure to cool in electrical system, Compressor clutch not engaging.Expansion valve not functioning. Restriction in refrigerant system. See your John Deere dealer.Faulty wiring or loose connections.Defective temperature control switch.Outside temperature too low, below 21gets warmer.Condenser is overheating. Clean condenser screens, cores and fins of condenser and radiator.

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