Armstrong World Industries 6100 - Manual (Page 27)

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2 WATER LEVEL DROPPED BELOW LOW LEVEL DURING NORMAL RUN - - The low level switch
has not closed after 5 minutes of fill valve on time. This is only after initial start-up fill and boil-down
sequence.
Check: debris in water switch canister, defective fill valve, no water flow or low water pressure, drain
valve stuck open, defective low water level switch (electrodes need to be cleaned).
3 WATER LEVEL ABOVE HIGH LEVEL TIME OUT - - The high water switch is still closed 5 minutes
after the fill valve has turned off upon hitting the high water level and a 30 second drain does not drop
the water below the high water level. Check: defective high water level switch, debris in level canister,
fill valve stuck open, drain valve is defective or scale buildup in drain line.
4 ILLEGAL LEVEL SWITCH STATE - - The high level switch is closed and the low level switch is
open. Check: defective level switch(es), debris in electrode level canister, scale on electrodes or
canister, improper wiring of electrodes or float switches.
5 OVER TEMPERATURE - - Internal temperature exceeds safe level. Check: low water in tank,
scale buildup on Thermocouple heating element surface, defective Thermocouple. See Clearing
“Error” Codes section.
6 WATER LEVEL HAS NOT DROPPED BELOW LOW LEVEL - - The low water level switch has
not opened after a complete drain. Unit drains frequency and duration can be set in menu. Check:
defective low water level switch or electrodes, defective drain valve, debris on low water level float
switch or electrodes, tank drain screen, or in drain valve.
7 FILL TIME OUT FROM LOW TO HIGH LEVEL - - The high water level switch has not closed 10
minutes after lo level switch closed. Check: debris in fill valve inlet screen, water leaking from tank or
inlet tubing, low water pressure, defective high water level switch (electrodes need to be cleaned).
Clearing “ERROR” codes
After correcting the problem, the error state must be cleared by confirming Failure Reset in operation
setup menu. The unit should resume normal operation (If the water level is above the low water, the
unit will drain below the low water level and refill before energizing the contactor). Turning the power
on and off will not clear the error condition.
Safety Switches
When the high limit or air proving (pressure) switch opens the state light will flash green and the
message “High Humidity/Sail Switch Circuit is Open” will be shown on the front display. This is a soft
error, it does not have to be reset. When the circuit closes the unit will go back to normal operation.