Troubleshooting
16 Tips for operators and service technicians
Any repairs exceeding routine maintenance may only be carried out by qualified personnel or our
service.
Prior to working on the unit or in case of danger, disconnect it from the mains.
Error
Possible cause
Remedy
Compressor starts up, no dis-
play on the operating panel
Operating panel defective
❯
Disconnect the mains plug
and inform a service techni-
cian.
Compressor will not start
No display on the operating
panel
No mains voltage
❯
Check the main power switch,
mains fuse and mains voltage,
inform an electrician if neces-
sary.
Fault button flashes (if compres-
sor is equipped with 2 units)
Emergency mode possible
❯
Activate emergency mode:
Press the fault button, (see
"13.8 Emergency mode").
Compressor runs with 1 unit.
❯
Inform a service technician
Fault button lit up
Compressor defective
❯
Disconnect the mains plug
and inform a service techni-
cian.
LED on the filter replacement
button lights up
Filter replacement required
❯
Change all filters
The fault button flashes
Compressor unit defective
❯
Activate emergency mode:
press the fault button. Com-
pressor runs with 1 unit
❯
Inform a Service Technician.
Vent valve defective
❯
Activate emergency mode
and inform a service techni-
cian.
Fault button lit up
Unit is defective
❯
Unplug the mains plug.
❯
Inform a service technician.
Troubleshooting
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4252100034L02 2105V002
EN