Nilfisk-Advance 56507009, Troubleshooting Manual

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20 - FORM NO. 56043129 - SR 1900
SR 1900 CONTROL PANEL DIAGNOSTICS
Function of the main controller’s service indicator fault blink code display light
The A2 main controller will out put a flashing fault code to the operator display panel when or if there is a problem (current overloads) associated with
specific electrical low current circuit controller output functions. Examples of circuits; hydraulic solenoid coils used to turn on & off hydraulic loads
and numerous relays used for activating machine function such as the headlights, horn, shaker motor, back-up alarm etc.
See Figure 1. When an A2 controller fault occurs the service indicator light (LED) (UU) will blink (flash) a special fault (error) code sequence until
the fault is corrected. See “Table A” for a description of the fault indications.
Service Note: Instructions on how to read the fault code service indicator light. The service indicator LED blink code should operate as follows:
•
First part of code (250mS period per flash – 125mS ON, 125mS OFF the 700mS LED OFF period.
•
Second part of the code (250mS period per flash – 125mS ON, 125mS OFF the 700mS LED OFF period.
•
2 second LED off period
•
Repeat sequence
If multiple faults are present, the codes should appear in order until all are displayed and then the entire sequence will repeat.
Example: Code1, 2
0 00 0 00 one light blink, a short pause two blinks, long pause and the code will be repeated.
LED on for 125mS
LED off for 700mS
LED on for 125mS
LED off for 125mS
LED on for 125mS
LED off for 2000mS
Repeat
FIGURE 1