Nordmann ES4 - Malfunction Lists; System Faults

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8.2 Malfunction lists
8.2.1 System faults
Warning Error Cause Remedy
Code Malfunction Code Malfunction
E1 ES4 Card missing No ES4 Card installed on the con-
trol board.
Install ES4 Card or start test run.
––– ––– E2 ES4 Card is empty No data stored on the ES4 Card. Install new ES4 Card.
––– ––– E3 ES4 Card is
defective
Invalid data stored on the ES4
Card.
Install new ES4 Card.
––– ––– E4 ES4 Card is
incompatible
The installed ES4 Card is not compat-
ible with the hardware of the unit or
with the basic settings of the control
electronics.
Install correct ES4 Card. Let your
Nordmann service technician adjust
the basic settings.
––– ––– E10 Hardware fault Control board defective. Replace control board.
8.2.2 Unit faults
Warning Error Cause Remedy
Code Malfunction Code Malfunction
W20 External safety
chain is open
––– ––– Ventilation interlock open. If applicable, check/turn on ventila-
tion system.
Air ow monitor triggered. Check ventilator/lter of the ventila-
tion system.
Safety humidistat triggered. Wait. If applicable, check safety
humidistat
W21 Max. lling level of
steam cylinder
reached
E21 Max. lling level of
steam cylinder
reached but
no heating current
Water conductivity too low (after initial
operation).
Wait until the mineral content of the
cylinder has increased
Water conductivity too low for type of
steam cylinder.
Select correct steam cylinder type.
Phase failure heating voltage. Check service switch in the mains
supply line and switch on if applicable.
Check mains fuse(s) and replace if
applicable.
W22 Permissible lling
time exceeded (20
minutes)
E22 Permissible lling
time exceeded (more
than 4 hours)
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 in 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.