Data Aire dap4 User Manual page 104

Alarm Screen Description &
Classification
Hi Humidity The return air
humidity is
higher than the
high humidity
alarm limit.
*Warning
Low Humidity The return air
humidity is
lower than the
low humidity
alarm limit
*Warning
Humidifier Humidifier
failure malfunction
*Warning
Possible Causes
•
No electric reheat
•
Lack of vapor barrier
•
Unusual high rate of
building heat gain
•
Humidity is too High
•
Humidity alarm set
point needs to be
adjusted
•
Unusual rate of
building humidity gain
•
Loose Connection
•
Out of calibration
•
Faulty Sensor
•
Humidity is to low
•
Humidity alarm set
point needs to be
adjusted
•
Humidifier not working
properly
•
Out of calibration
•
Faulty Humidity
sensor
•
Low water pressure
•
Overcurrent detected
or no current
•
Fill system failure
•
End of cylinder life
104
Corrective Actions
•
Check reheat elements for
proper operation
•
Seal room with the proper vapor
barrier
•
Check room infiltration
•
Check humidity in the room
•
Check High humidity alarm set
point (range 35%-90%)
•
Check water vapor infiltration
•
Check Connection
•
Calibrate sensor
•
Check Humidity sensor and
replace if needed
•
Check humidity in the room
•
Check Low humidity alarm set
point (range 10%-65%)
•
Check Humidifier
•
Calibrate sensor
•
Check Sensor replace if needed
•
Check water pressure
•
Check current, and add minerals
to the water if necessary
•
Check for water supply and fill
valve