Fault Finding; Operational Problems; Fault Finding The System - Hardi ISOBUS VT Operator's Manual

Operational problems

Fault finding the system

When a problem occurs with the system, it is good practice to go through the general fault finding schematic, before
contacting your HARDI® dealer.
Problem
Flow
Speed
Active boom width
DynamicFluid4 pressure regulation
valve
Possible cause Try/Test
Is there flow readout? Select l/min in the system menu.
Use test menu. (menu 4.5.1 + 4.5.4.1)
Are flow PPU correct?
Does pressure equalization valves leak?
(Not COMMANDER/EFC).
Is there speed readout? Use test menu. (menu 4.5.1 4.5.4.1)
Check LED diode on sensor.
Is speed stable? Max. deviation ±0,15 km/h
Signal received? Select boom width menu.
Does manual control work? Turn valve to maximum.

11 - Fault finding

Check/Behavior
Does this correspond to actual flow?
Are there signal from flowmeter?
Max. 10% change from given values.
Any signal from sensor?
Sensor at metal = ON, Sensor at hole = OFF.
Distance to wheel speed ring 4-5 mm?
Is speed ring buckled?
Does sensor sense middle of holes?
Does speed ring vibrate when running?
Correspond to actual boom width?
Can the valve turn reverse, both at min. and
max.?
11.1