Trane EHUMD800ASM00BA Installation & Maintenance Instructions Manual page 20

SHUT DOWN PROCEDURE
To turn humidifier off, push "On/Off" button once . Humidifier will begin its four-minute drain cycle . Fill valve will open to temper drain water . The
"Drain" light will flash green for 15 seconds then turn solid green for four minutes while the canister drains . Once the "Drain" light turns off, the
drain cycle is complete and the humidifier is off .
DISPLAY PANEL
Green lights indicate normal operation .
Yellow "Steam" light indicates humidifier is operating at less than rated capacity .
Flashing red "Service" light indicates canister is near the end of its life and should be replaced if the humidity in the space cannot be maintained .
Solid red lights indicate humidifier has shut down and requires service .
Disconnecting power to humidifier resets internal timers .
TABLE 5 – Display Panel
Indicator Light
Off
Solid green
Flashing Green
Off
Solid Green
Flashing Green
Solid Red
Off
Solid Green
Solid Yellow
Off
Solid Green
Flashing Green
Flashing Red
Solid Red
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Function
Humidifier is turned off or power is disconnected .
Humidifier is turned on .
Humidifier is preparing to turn on . Occurs if power to humidifier was turned off when humidifier
was on . Humidifier turns on after light flashes for one minute .
Fill valve not energized .
Fill valve is energized, filling or replenishing canister with water . (During drain cycle when fill valve
is open allowing cold water into canister to temper drain water, the "Fill" light does not illuminate .)
Fill and Drain Valves are pulsing to dislodge mineral deposits from drain . Flashes 10 times in 4
seconds . Occurs if high water probe detects water during drain cycle .
Humidifier cannot fill canister . Humidifier stops operating . Occurs after fill valve has been energized
for 40 minutes and high water probe does not detect water .
Humidifier is not producing steam .
Humidifier is turned on and receiving a call for humidity from the control .
Humidifier is producing steam but at less than the rated capacity . Occurs if humidifier has operated
for 168 hours and has not reached nominal current .
Drain valve is not energized .
Drain valve is energized, allowing water to drain from canister .
Humidifier is preparing to drain . Flashes for 15 seconds indicating fill valve is open allowing cold
water into canister .
Canister has reached end of life . Humidifier continues to operate but at reduced capacity . Occurs
after humidifier has operated for 168 hours plus another 24 hours at less than 75% of the maximum
operating current level between electrodes .
Humidifier is not operating and requires service .