51
Fault messages, diagnostics.
Operation
Operation:
Fault messages, diagnostics
Alarms screen
The Alarms screen on the keypad/display logs the last
ten alarms that have occurred on the humidifier. To
scroll through the alarms, use the up and down arrow
keys. You can acknowledge or clear any one of the
alarms using the appropriate soft keys. If an alarm has
occurred that you would like to get more information
about, highlight that alarm using the arrow keys and
then press the Enter key. A screen will appear that
gives you the time and date the alarm occurred as
well as a more detailed explanation of what the alarm
means.
Sensor faults
The following is a list of sensor faults that can occur.
Please note that this is a complete list of faults. Your
system may not have all of these options. The text in
parentheses is what will actually appear in the alarm
log.
Humidity transmitter fault (RH Trans Fault)
The humidity sensor is incorrectly wired or bad.
Dew point transmitter fault (DP Trans Fault)
The dew point sensor is incorrectly wired or
bad.
VAV humidity transmitter fault
(VAV Tran Fault)
The duct humidity sensor is incorrectly wired or
bad.
Temp comp transmitter fault
(Temp Trans Flt)
The temperature compensation sensor is
incorrectly wired or bad.
Fill and drain faults
The following is a list of fill and drain faults that can
occur. Please note that this is a complete list of faults.
Your system may not have all of these options. The
text in parentheses is what will actually appear in the
alarm log.
Fill fault (Fill Fault)
The fill valve has been energized for more than
40 minutes without the water reaching the top
probe.
Drain fault (Drain Fault)
The drain valve has been energized for more
than 20 minutes without the water falling off the
bottom probe.
Low water timer fault (Fill Time Flt)
The unit has run too long without the fill valve
opening.
Low-level probe fault (LL Probe Fault)
The water in the tank has reached the middle or
upper probe without reaching the lower probe.
Mid-level probe fault (ML Probe Fault)
The water in the tank has reached the upper
probe without reaching the middle probe.
Probe assembly fault (Probe Assy Flt)
The system has detected the deterioration of the
probe assembly to a point that replacement is
necessary.
VL3-IOM-0301-METRIC.pdf 55
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