Nordmann ES4 - Page 71

71
Warning Error Cause Remedy
Code Malfunction Code Malfunction
W23 No electrode current
for more than 20
minutes
E23 No electrode cur-
rent for more than
4 hours
Phase failure heating voltage. Inspect/turn on service switch of
the mains supply line. Inspect the
fuses of the mains supply, replace
if necessary.
Water supply obstructed/shutoff valve
closed/water pressure too low.
Inspect water supply (lter, water pip-
ing, etc.), check/open shutoff valve,
check water pressure.
Inlet valve blocked or defective. Inspect strainer insert of the inlet
valve, if applicable clean strainer
insert or replace inlet valve.
Excessive back pressure in the steam
line (duct pressure too high, steam
line too long or kinked), causing water
loss via lling cup.
Check duct pressure, inspect steam in-
stallation. If applicable install pressure
compensation kit (see options).
Leakage in the water system. Inspect water system and seal if
necessary.
W24 Electrode current in
relation to the steam
demand too high
E24 Electrode current in
relation to the steam
demand too high
Humidity demand has decreased too
fast.
Automatic adaptation of the operat-
ing point.
Drain valve defective. Inspect drain valve, replace if nec-
essary.
Drain screen in the drain outlet of the
steam cylinder clogged.
Clean drain screen (see chapter 7.3.2
and 7.4) or replace steam cylinder.
Water conductivity too high for this
type of steam cylinder.
Select correct steam cylinder type.
W25 Max. admissible
electrode
current exceeded
E25 Max. admissible
electrode
current exceeded
Drain valve defective. Inspect drain valve, replace if nec-
essary.
Drain screen in the drain outlet of the
steam cylinder clogged.
Clean drain screen (see chapter 7.3.2
and 7.4) or replace steam cylinder.
Water conductivity too high for this
type of steam cylinder.
Select correct steam cylinder type.
––– ––– E26 Main contactor
jammed
Main contactor jammed in activated
position.
Inspect main contactor, replace if
necessary.
W27 Foam detection E27 Foam detection (4
automatic drainings
within 24 hours)
Foaming in steam cylinder. Drain steam cylinder via drain key
(several times, if necessary). Check
quality of the supply water.
W28 Steam cylinder
needs service
E28 Service interval for
steam cylinder
exceeded
Mineral deposits and/or electrodes
spent.
Replace steam cylinder.
Important: After the replacement of
the steam cylinder, reset the main-
tenance counter (see chapter 7.6).
W29 Steam cylinder
needs service
E29 Max. operating
hours of the steam
cylinder reached
Maximum operating hours of the
steam cylinder reached.
Replace steam cylinder.
Important: After the replacement of
the steam cylinder, reset the main-
tenance counter (see chapter 7.6).
W36 Standby draining of
steam cylinder
active
––– ––– Automatic standby draining of
steam cylinder active.
No measures must be taken.
W37 Forced draining of
steam cylinder
active
––– ––– Forced draining of steam cylinder
active.
No measures must be taken.