Bosch Rexroth AG, H-4WEH...XE..., RE 24751-XE-B/04.16
14.1 How to proceed for troubleshooting
Always work systematically and purposefully, even when under time pressure.
Random, thoughtless disassembly and changing of settings might in the worst
case result in the inability to restore the original cause of error.
First get a general idea of the function of your valve in conjunction with the
Try to find out whether the valve has functioned properly in conjunction with the
overall system before the error occurred first.
Try to determine any changes to the overall system in which the valve is
– Were there any changes to the application conditions or to the area of
application of the valve?
– Have any changes (e.g. refittings) been made or have repair works been carried
out at the overall system (machine/system, electrical systems, control) or at the
valve? If so: What were they?
– Was the valve or machine used as intended?
– How did the fault become apparent?
Try to get a clear idea of the cause of error. Ask the direct (machine) operator.