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Page 41
2008-08-28
H. SYSTEM MESSAGES AND LIGHTS
(1) Table 3 describes general signal light status meanings.
Table 3. Signal Light Status
(2) Table 4 describes common status messages and the lights displayed for each and their
meaning. For a list of warnings and faults, see Chapter 10-40 Troubleshooting.
I. DOUBLE UNIT OPERATION
(1) The unit will report only one cylinder at a time if the unit was ordered without coupled
circuits. You will notice on the screen the indication of which cylinder you are
monitoring and in the lower right the option to monitor the alternate cylinder.
Yellow Green Red
OFF OFF OFF Unit is on standby or humidifier has just been energized but has not sensed
production of steam yet.
OFF ON OFF Humidifier senses production of steam.
ON OFF OFF An attention state exists that should not prevent the unit from producing steam
when the controls call for it. Check the message on the screen to try to correct it.
ON ON OFF Prepare to replace cylinder or normal startup operation. May also indicate an
attention during operation. Check the message on the screen to try to correct it.
BLINK OFF OFF Manual Drain On with software drain switch.
OFF BLINK OFF Unit sees a demand, but safeties are open.
OFF OFF ON Operation fault (unit will not run).