Nordmann DC4 - Page 46

46
Warning Error Cause Remedy
LED Display LED Display
Relay heating voltage jammed
––– ––– red
lights
Error
E26: Req.Off Current
Relay heating voltage jammed in activated
position.
Inspect relay, replace if necessary.
Foam detection Foam detection (4 automatic
drainings within 24 hours)
–––
Warning
W27: Foam
red
lights
Error
E27: Foam
Foaming in steam cylinder. Drain steam cylinder via drain key (sev-
eral times, if necessary). Check quality of
the supply water.
Steam cylinder needs service Service interval for
steam cylinder exceeded
yellow
lights
Warning
W28: Cyl. Maintenance
red and
yellow
ash
Error
E28: Cyl. Maintenance
Mineral deposits and/or electrodes spent. Replace steam cylinder.
Important: After replacement of the steam
cylinder, reset the maintenance counter
(see chapter 5.6).
Steam cylinder needs service Max. operating hours of the steam
cylinder reached
yellow
lights
Warning
W29: Cyl. Maintenance
red and
yellow
ash
Error
E29: Cyl. Maintenance
Maximum operating hours of the steam
cylinder reached.
Replace steam cylinder.
Important: After replacement of the steam
cylinder, reset the maintenance counter
(see chapter 5.6).
Humidity sensor signal (signal Y)
missing
Humidity sensor signal (signal Y)
missing for more than 1 minute
–––
Warning
W32: Ctrl.Sens.Broken
red
lights
Error
E32: Ctrl.Sens.Broken
No sensor signal present at signal input
(Signal Y).
Check humidity sensor (signal Y) , replace
if necessary. Inspect wiring.
Signal of humidity limitation sen-
sor (signal Z) missing
Signal of humidity limitation
sensor (signal Z) missing for more
than 1 minute
–––
Warning
W33: Lim.-Sens.def.
red
lights
Error
E33: Lim.Sens.Broken
No sensor signal present at signal input
(signal Z).
Check humidity sensor (signal Z) , replace
if necessary. Inspect wiring.
Standby draining of
steam cylinder active
–––
Warning
W36: Standby Drain
––– ––– Automatic standby draining of steam
cylinder active.
No measures must be taken.
Forced draining of
steam cylinder active
–––
Warning
E37: Forced Drain
––– ––– Forced draining of steam cylinder active. No measures must be taken.
Safety chain instable
–––
Warning
W38: Safety Loop Inst
––– ––– Safety chain opens and closes in short
intervals.
Check/replace safety humidistat, ventilation
interlock and air ow monitor.
Control signal instable
–––
Warning
W39: Control Instable
––– ––– The signal at the control signal input
uctuates strongly in short intervals.
Check/replace humidity sensor or external
humidity controller.
Limit humidity signal instable
–––
Warning
W40: Limit Instable
––– ––– The signal at the limit signal input uctu-
ates strongly in short intervals.
Check/replace humidity sensor or external
humidity controller.