Common Warnings - Nortec NHTC Installation And Operation Manual

LED Status Lights
The keypad and display panel includes 3 LED's which provide information about the humidifier's
current status.
Indicates the controller has detected a
fault condition and stopped humidifier.
Check display for fault information.
Service LED On
Indicates that service may be required
or that the water level is high. Check
display for warning information.
Service LED Blinking
Indicates drain button has been pushed
and unit is draining.
Indicates steam is being produced.
ON LED Blinking
Indicates demand with safety loop open.

Common Warnings

The following two warnings are common during normal operation and do not normally indicate
that service is required. For a new cylinder the Sensor On warning indicates that full capacity
cannot be reached because cylinder water is not concentrated. For an old cylinder the Sensor
On warning may be an indication that the cylinder will soon have to be replaced.
W12: Sensor On
The above warning is normal during the start and end of a cylinder's life. It indicates that
the high water sensor has interrupted filling of the cylinder. It is displayed for information
only and unless it persists for an extended period of time it does not require any action.
W11: Safety Loop Open
The above warning is normal during operation. It indicates that an On/Off humidistat or
one of the security loop devices connected between control terminal 1 and 2 is open. It
is displayed for information only and does not require any action.
Fault LED On
ON LED On
Figure 35: LED Status Lights
Operation | 42