New Holland 128 – New Holland Automatic Temperature Control Atc: High Pressure Switch Input Shorted to Ground

The high pressure switch input is experiencing a short to ground, which can cause improper operation of the automatic temperature control system. This fault is detected by the controller and is indicated by the fault code 128.

1. 1

   High pressure switch

2. 2

   Wiring connected to the high pressure switch

3. 3

   Ground connection related to the high pressure switch

1. 1

   Inspect

   Inspect the high pressure switch for physical damage or signs of wear.

2. 2

   Test

   Test the wiring connected to the high pressure switch for continuity and proper insulation.

3. 3

   Check

   Check the ground connection associated with the high pressure switch for corrosion or looseness.