Troubleshooting
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8
Troubleshooting
All work exceeding the activities described in the chapter Operation may only be carried out by
skilled personnel (see 3.2).
• Follow (and if necessary carry out) the instructions as described in 7.1
Fault messages on the control unit
LED
Acoustic
signal
Meaning / fault elimination (see chapter)
Red, flashing
yes
Battery voltage too low / replace battery (7.4.1)
Red, flashing 2x *
yes
Humidity in the control unit housing / remove control unit,
if this eliminates the fault, install again and carry out a
functional check (5.3). If the fault persists: inform KESSEL
Factory Customer Service or replace the lockable cover with
control unit
* every 20 seconds