45
VAPOR-LOGIC
®
VERSION 6 INSTALLATION AND OPERATION MANUAL
System alerts
Table 45-1:
Alerts menu (continued)
Alerts label Description
Does alarm
auto-clear?
Flue or tank over-temp cutout
The listed flue temperature switch or tank temperature switch has opened. These switches will close after
the system has cooled.
Yes
Flue sensor out of range Flue temperature sensor signal is out of range. Yes
Drain sensor out of range Drain temperature sensor signal is out of range. Yes
Yellow Alerts
No airflow No duct airflow. Yes
I-lock open Interlock safety switch is open. Yes
Freeze drain Tank has drained to prevent freezing. Yes
End-of-Season (EOS) active The humidifier is draining or has drained and remains inactive until receiving another call for humidity. Yes
Clean probes Water level control probes need cleaning. Check tank for cleaning. No
Duct HL trip Duct relative humidity has risen above the high limit set point, or high limit switch has opened. Yes
Insufficient water The low water probe is not in contact with water when there is a demand for humidity. Yes
Master enable open Indicates demand signal is being ignored due to master enable input being open. Yes
Hot drain water temp The drain temperature has exceeded 145 °F (63 °C) for at least one minute Yes
Excessive foaming
During normal operation top probe indicated "water", which was interpreted as foam. Foam drain will
occur.
Yes
Aux temp sense out of range Auxiliary temp sensor signal is out of range. Yes
White Alerts
Service unit Regularly scheduled unit servicing is due. No
Drain pending Auto drain/flush will occur at next scheduled time. Yes
Temp comp on
Humidifier output has been reduced because temperature compensation sensor reads a temperature on
the inside-pane of an outside-wall window that could cause condensation.
Yes
Duct HL span
Duct high limit transmitter has entered the throttle span range and is approaching duct high limit set
point.
Yes
Replace ignitors soon
Replace ignitors soon. Ignitors have been cycled to 80% of their expected life or there are other
indications the ignitors may be worn out.
No
High flue temp, output
reduced
Flue temperature is close to exceeding rated value. The output will temporarily be reduced by 50% to
allow the flue to cool.
Yes
Hot drain water
The drain temperature has exceeded 145°F (63° C) for one minute. The drain tempering device may
not be working properly.
Yes
Boiling temp calibrated
indicates actual humidifier boiling temperature at time of reading. Ths reading is taken after power-up
by the tank sensor at the time of first steam creation.
Yes
Notes:
• See the “Troubleshooting” section, beginning on Page 80, for alert possible causes and recommended actions.
• The Alerts Log displays alert name, date and time of occurrence, plus ”Active,” ”Cleared” or ”Auto-cleared.”
• Active alerts display first in the Alerts Log, followed by cleared alerts (auto-cleared and/or manually-cleared) listed in order of occurrence.
• The Alerts Log displays maximum 60 alerts. Cleared alerts leave the log first.
• If an alert event occurs and is not manually cleared or auto-cleared during unit operation, the alert will remain until there is demand and the unit is
running.
OPERATION
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