Identification And Causes Of Failure / Corrective Action - ZF ERM Operating Instructions Manual

Failure identification
4

Identification and causes of failure / corrective action

Failure identification
LED Ø contr. flashes
(operating mode "controlled
with Ø sensing")
LED Ø contr. flashes
(operating mode "controlled
with Ø calculation")
"Power" LED does not
light up
All 3 LED lights will flash
(sequentially)
6057 758 101 - 2005-02
Causes
No operating voltage or too low
ERM fuse is defective
Program does not run correctly
Operating voltage too low or too high
Reference voltage too low
Short-circuit or interruption at current
output, or coil is bridged
Missing size
38
Electronic control unit ERM
Corrective action
➢ Repeat setting procedure
(see page 28)
➢ Repeat setting procedure
(see page 33)
➢ Check operating voltage
➢ Replace defective fuse
➢ Consult ZF
➢ Check operating voltage
➢ Check load resistance
➢ Correct short-circuit /
interruption
➢ see operating mode, setting of
DIL switches (see page 18)