YDT-35 Operating and Servicing Manual
HL066(EN) ISSUE 1, 05/2015
45
5.2 Troubleshooting Guide
Symptom
Possible cause/Action
Display ‘dead’
Refer to Figure 5.1
Mains supply fuse blown
Check the mains inlet fuse, ‘pinch’ the top and bottom
tags of the fuse holder and pull to withdraw the fuse.
There is one spare fuse supplied inside the holder.
Remove the mains electrical supply connector
before attempting to change the fuse
Irregular ‘clunking’ sound
Pressure regulator set too high
Unwind the regulator until the indicated pressure is lower
than 1000 bar.
Irregular Injector firing
Poor electrical connection/faulty injector
Check Injector cable is connected correctly and is secure
Try a known ‘good’ injector
Inconsistent/no injector firing
Wrong injector type selected/faulty injector
Check the correct injector Brand/Type/Code is selected
Incorrect injector selection may damage both the
injector and the machine.
Piezo injector fails to inject
Incorrect electrical connection/faulty injector
Check the injector connection is correct as described in
section 4.2.5
Try a known ‘good’ injector
Incorrect Piezo injector connection may damage
both the injector and the machine.
ISF test fails to run (no spray pattern)
Inadequate air supply/ inadequate high pressure
Check the air supply is connected to the back on the
machine and is within the specification described in
section 0
Adjust the pressure regulator for adequate high pressure.
Check there is adequate fluid in the tank
OC on-screen (Ohm/Ind/Cap test)
Injector open circuit/faulty
Check Injector cable is connected correctly
Try a known ‘good’ injector
SC on-screen (Ohm/Ind/Cap test)
Injector short circuit/faulty
Try a known ‘good’ injector
Error(s) Found
– on-screen indication
Refer to Figure 5.2
Guard opened during a test
Close the guard and restart the test
THIS IS AN UNCONTROLLED DOCUMENT downloaded by Lukas Matuska on 16 Feb 2016
Any technical intervention requires certified Hartridge training. Contact Hartridge Ltd for details.
