Malfunction Lists; System Faults - Nordmann AT4 Operating Instructions Manual

7.2

Malfunction lists

7.2.1

System faults

Warning
LED Display
CF card missing
(Test run possible)
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Warning
W1: CF-Card Missing
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On/Off timer active
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Warning
W12: Timer Disable
Test Mode active
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Warning
W16: Test Mode Active
Humidifier missing
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Warning
W17: Unit Missing
60
Important! Most operational malfunctions are not caused by faulty equipment
but rather by improper installation or disregarding of planning guidelines.
Therefore, a complete fault diagnosis always involves a thorough examina­
tion of the entire system. Often, the steam hose connection has not been
properly executed, or the fault lies with the humidity control system.
Error
LED Display
CF card missing
red
Error
lights
E1: CF-Card Missing
CF card is empty
red
Error
lights
E2: CF-Card Empty
CF card is defective
red
Error
lights
E3: CF-Card Invalid
CF card is incompatible
red
Error
lights
E4: CF-Card Incompat
Module B missing
red
Error
lights
E5: Module B missing
Wrong hardware settings
red
Error
lights
E9: Illegal Settings
Hardware fault
red
Error
lights
E10: Flash R/W Fault
Error
E11: Clock R/W Fault
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Cause
No CF card installed on the control board. Install CF card or start test run.
No data stored on the CF card.
Invalid data stored on the CF card.
The installed CF card is not compatible with
the hardware of the unit or with the basic
settings of the control electronics.
Module B not correctly connected or
defective.
False test run parameters.
Control board defective.
Backup battery on control board
discharged.
The system is deactivated via the On/
Off-Timer.
Diagnostic mode active (Remote Test,
Module Test etc.)
The optional remote terminal does not
have connection to one or more units.
Remedy
Install new CF card.
Install new CF card.
Install correct CF card. Let your Nord-
mann service technician adjust the basic
settings.
Check module B and connecting cables
between module A and module B.
Let your Nordmann service technician adjust
the test run parameters (heating voltage,
Cylinder-No.).
Replace control board.
Let have the backup battery be replaced
(see chapter 7.5).
None. If necessary adjust On/Off timer
settings.
Quit diagnostic mode.
Check connecting cable. Check/correctly set
Modbus settings (modbus address, interface
parameters).