Distribution Rack Alarm Table - Elsteam EHPN Series Operating And Maintenance Manual

13.2 Distribution rack alarm table

Code Description Cause
No communication with the pump
AL07 Alarm: master
unit
Alarm:
AL11 machine Hours of unit operation > M10
service life
Warning:
Hours of branch 1 solenoid valve
branch 1
AL12 operation > M11 or number of
solenoid valve
solenoid valve activations > M18
maintenance
Warning:
Hours of branch 2 solenoid valve
branch 2
AL13 operation > M12 or number of
solenoid valve
solenoid valve activations > M18
maintenance
Warning:
Hours of branch 3 solenoid valve
branch 3
AL14 operation > M13 or number of
solenoid valve
solenoid valve activations > M18
maintenance
Warning: inlet Hours of inlet solenoid valve
AL15 solenoid valve operation > M14 or number of
maintenance solenoid valve activations > M18
Warning:
Hours of outlet solenoid valve
outlet
AL16 operation > M15 or number of
solenoid valve
solenoid valve activations > M18
maintenance
Warning: low Humidity production < M5 for a
W17
humidity time > M7
Warning: high Humidity production > M6 for a
W18
humidity time > M7
Alarm:
AL20 humidity
sensor
Alarm: • Sensornotworking
AL21 humidity limit • Sensor not connected correctly
sensor •  C ontrolboardnotworking
Alarm:
AL22 request from
sensor
Nocommunicationbetweenrack
Alarm: HPN
AL23 and expansion board that manages
offline
rackbranchEV4-EV5-EV6-EV7
924EHPNE4.01 - EHPN series humidifiers
Effects
• Fixedalarmicon
• AL07 displayed
• Alarm relay ON
• AL07 recorded in the log
• Fixedalarmicon
• AL11 displayed
• Alarm relay ON
• AL11 recorded in the log
• Fixedalarmicon
• AL12 displayed
• Alarm relay ON
• Noeffectonregulation
• AL12 recorded in the log
• Fixedalarmicon
• AL13 displayed
• Alarm relay ON
• Noeffectonregulation
• AL13 recorded in the log
• Fixedalarmicon
• AL14 displayed
• Alarm relay ON
• Noeffectonregulation
• AL14 recorded in the log
• Fixedalarmicon
• AL15 displayed
• Alarm relay ON
• Noeffectonregulation
• AL15 recorded in the log
• Fixedalarmicon
• AL16 displayed
• Alarm relay ON
• Noeffectonregulation
• AL16 recorded in the log
• Fixedalarmicon
• W17 displayed
• Alarm relay ON
• W17 recorded in the log
• Fixedalarmicon
• W18 displayed
• Alarm relay ON
• W18 recorded in the log
• Fixedalarmicon
• AL20 displayed
• Alarm relay ON
• HumidifierOFF
• AL20 recorded in the log
• Fixedalarmicon
• AL21 displayed
• Alarm relay ON
• HumidifierOFF
• AL21 recorded in the log
• Fixedalarmicon
• AL22 displayed
• Alarm relay ON
• HumidifierOFF
• AL22 recorded in the log
• Fixedalarmicon
• AL23 displayed
• Alarm relay ON
•
• AL23 recorded in the log
| 109 | Diagnostics |
Solution
• Restore communication
betweenslavehumidifierand
masterhumidifier
• Automatic reset
Carry out full maintenance
•  C heckthewatermainsflow
rate
•  C heckthatthesolenoidvalve
isworking
• Carry out maintenance on the
solenoid valve
• Replace the solenoid valve
•  C heckandcleantheinternal
pipes and inlet/outlet
manifold
• If it occurs together with other
alarms,checkaccordingly
•  I fthehumidifieris
underdimensioned,contactthe
system designer
• Checkr6andsetit>70%
• If it occurs together with other
alarms,checkaccordingly
•  I fthehumidifieris
underdimensioned,contactthe
system designer
• Checkr6andsetit<70%
•  C heckthesensortype
•  C heckthesensorwiring
• Change the sensor type
•  C heckforelectricalnoise
• Restore communication
between distributionrackand
pump unit
• Automatic reset
02/2024