924VHE4.02 -
VEH
series humidifiers
02/2022
| 33 |
10. DIAGNOSTICS
The table below lists alarms with corresponding solutions. Inhibiting alarms trigger the alarm relay.
10.1 Table of Alarms and Solutions
Description
Cause
Effects
Solution
No Water
alarm
No water in the boiler
Humidity production
inhibited
•
Makesuretheinletshut-offvalveisopen;
•
Checkthesolenoidvalveconnections;
•
Makesurethesolenoidvalvefilterisnotblockedwith
deposits;
•
Makesurethesolenoidvalveisworkingproperlyand
replace it if necessary;
•
Makesurethesupplementaryfilterinstalledupstream
ofthehumidifierisnotblocked,replacethefilter
cartridge if necessary.
No Production
alarm (#)
No production or
insufficient production
• # appears on the
display
• Indication only
• Alarm relay ON
•
Checkthewaterinletsolenoidvalve(filtercloggedor
solenoid valve damaged);
•
Checkforanybreakagesorleaksinthehumidifiertank;
• Contact Elsteam customer service to replace the AT;
•
Makesuretheelectricalpowercablesareconnected
correctly.
Drain alarm
Insufficient or no water
drainage
• Indication only (if
partial drain)
• Humidity production
inhibited (if drain
completelyblocked)
•
Checktheamountoflimescaleintheboilertankand
in the drain ducts for the machine and for the system
downstreamofthehumidifier;
• Manually clean the limescale from inside the hydraulic
unit,fillanddrainmanifoldandinthedrainducts;
•
Makesurethedrainpumpelectricalconnectionsare
correct;
•
Makesurethedrainpumpisworkingproperly;
•
Makesuretherearenoleaksfromtheinletsolenoid
valve.
High Current
alarm
The measured
current exceeded
the nominal current
safety threshold for an
extended period
Production inhibited
• See Drain alarm
Solution
;
•
Checkhowthelimescaleisdepositedintheboilerand
makesuretherearejumpersbetweentheelectrodes;
• Clean it;
•
Checkthesupplywatertypeandmakesureit
correspondswiththespecificationsdescribedinthis
manual.
No Enabling
The activation contact
is not connected
The humidifier does not
come on
•
Makesurethereisaclosedcontactatterminals7and8;
•
Makesuretheelectroniccontrolisworking.
Maximum level
alarm (*)
Foamispresentor
electrodes are coated
in limescale and
therefore worn out
oruninsulated,inlet
solenoidvalveleaking.
• * appears on the
display
• Indication only
• Perform manual drain procedure to wash the hydraulic
unit and remove the foam;
• Perform maintenance and cleaning on the electrodes
andthetank,replacetheelectrodesifnecessary;
•
Checkforleaksfromtheoutletsolenoidvalveand
replace it if necessary.
