Fault Messages and Troubleshooting
8
US
Fault Messages
Symptom
dew point not sufficient
– high pressure dropt
– high air flow at si-
lencer
– service message
"change prefilter!"
after electrical connec-
tion no function of the
dryer
after electrical connec-
tion all LEDs lighted
no condensate drain
8.1 Fault Messages
Cause
– life of desiccant cartridges exceeded
– throttle element fouled or blocked or wrong diame-
ter of bore
– defective shuttle valves or regeneration valves
– silencer fouled or blocked or damaged
– condensate line blocked
malfunction of shuttle
valve
pressure build up insuf-
ficient
– board not connected
– transformer wrong or
defective
data stream to the con-
troller is interrupted
– loose condensate hose
at prefilter
– wrong installation
– 24 –
ball damaged
diaphragms damaged
wrong or blocked throttle
element
fouled throttle element
wrong sequence during
commissioning
terminal block not con-
nected
EEPROM not correctly
assembledt
Action
– change cartridges
– check throttle / change if need
– change multifunktion unit
– clean line
– clean line
Change multifunktion unit
Change multifunktion unit
Install the throttle according to
the operating instructions (see
section 7.1 „Preparatory Work"
on page 19).
clean throttle element
1. Step: pressurise
2. Step: power on
– check terminal block
– check contacts
turn EEPROM by 180°
fix condensate hose