Encore 1102771A Customer Product Manual page 46

4-4
Troubleshooting
Code Message
H31 Boost Valve Fault (J6)
H32 Electrode Air Wash Valve
Fault (J4)
H33 Fluidizing Air Valve Fault (J5)
H34 Purge Air Valve Fault (J10)
H35 Vibratory Motor Valve Fault
(VBF units only)
H36 Communications Fault LIN
Bus
H41 24V Fault
H42 Main Board Fault
(Interface)
H43 A Feedback Fault
Part 1102771A
Refer to the power unit wiring diagrams in Figures 4-6 and
4-7. Check the wiring harness connections to the valve
solenoids. Check the solenoid operation by placing a finger
on the solenoid and triggering the appropriate function. (The
boost air solenoid should open when flow air is set to above
3
3.0 SCFM or 5.10 M /Hr.) You should be able to feel the
solenoid open and close if it is functioning correctly.
Refer to the power unit wiring diagrams in Figures 4-6 and
4-7. Check the wiring harness connections to the valve
solenoids. Check the solenoid operation by placing a finger
on the solenoid and triggering the appropriate function. (The on the solenoid and triggering the appropriate function. (The
boost air solenoid should open when flow air is set to above
3
3.0 SCFM or 5.10 M /Hr.) You should be able to feel the
solenoid open and close if it is functioning correctly.
Refer to the controller wiring diagrams in this section. Check
the wiring harness connections to the valve solenoids. Check
the solenoid operation by placing a finger on the solenoid and
triggering the appropriate function. You should be able to feel
the solenoid open and close if it is functioning correctly.
Check the J9 connection for the relay inside the power unit. If
the harness becomes disconnected or the relay coil is
damaged, this fault will appear.
See Figure 4-4. Check the gun cable connection at the main
controller receptacle. See Figure 5-1. Check the
cable/display module J3 connector inside the gun. Make sure
the connectors and pins are not damaged and connection is
secure. Check the gun cable for opens or shorts. If the gun
display lights up, but shows CF and cable and connections are
OK replace gun display module.
Check the DC power supply located in the power unit. See
Figure 4--6 for pinout. If the voltage is less than 22 Vdc
replace the power supply. Turn on the power unit for this test.
Clear the fault and make sure KV is set to maximum 100 kV,
trigger gun ON and check for the H--code to reappear. Check
for a defective gun power supply or a gun cable. If the cable
and the gun power supply are OK, replace the main board.
Make sure KV is set to maximum 100 kV, trigger gun ON and
check A display. If A display always reads >75 A, even
when the gun is more than 3 ft from a grounded surface,
check the gun cable or the gun power supply. If the A display
reads 0 with the gun triggered on and close to a part, check
the gun cable or the gun power supply. When the gun is
triggered on and kV is set >0, the A display should always
read >0.
Correction
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