443 Error Code For McKee Tractor Models
There are 2 kind of error description.
Decelerator or Hand Throttle (STD cab) 5 Volt Supply voltage is too low
Foot Throttle 5 Volt Supply voltage is too low (engine controller pin B29)
Partial frosting and sweating of lines combined with poor cooling, fan belt slipping, loss of refrigerant, restricted or clogged liquid line or expansion valve malfunctioning.