Nordmann es4 4, Installation And Operation Instructions Manual

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7.2 Malfunction lists
7.2.1 System faults
Warning Error Cause Remedy
Code Malfunction Code Malfunction
E1 CF Card missing No CF Card installed on the control
board.
Install CF Card or start test run.
––– ––– E2 CF Card is empty no data stored on the cF card. Install new CF Card.
––– ––– E3 CF Card is defective Invalid data stored on the CF Card. Install new CF Card.
––– ––– E4 CF Card is
incompatible
The installed CF Card is not compat-
ible with the hardware of the unit or
with the basic settings of the control
electronics.
Install correct CF Card. Let your
Nordmann service technician adjust
the basic settings.
––– ––– E10 Hardware fault Control board defective. Replace control board.
7.2.2 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 flow monitor triggered. Check ventilator/filter of the ventila-
tion system.
safety humidistat triggered. Wait. If applicable, check safety
humidistat
W21 Max. filling level of
steam cylinder
reached
E21 Max. filling 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 filling
time exceeded
(20 minutes)
E22 Permissible filling
time exceeded
(more than 4 hours)
Water supply obstructed/shut­off
valve closed/water pressure too low.
Inspect water supply (filter, water pip-
ing, etc.), check/open shut­off 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 filling cup.
Check duct pressure, inspect steam
installation. If applicable install pres-
sure compensation kit (see options).
Leakage in the water system. Inspect water system and seal if
necessary.