Stulz CyberOne EC DX - Troubleshooting: Heater and Humidifier Inoperability

CyberOne EC DX IOM Manual
Symptom Probable Cause Recommendation
Heater Inoperative a. Fuses blown. Check for short circuit, replace fuses.
b. Temperature set too low. Increase temperature set point.
c. Overheat switch open. Insufficient airflow across heater elements.
Check for dirty filters or obstructions that may
reduce airflow. Correct or replace as needed.
d. Manual-reset overheat safety switch
tripped.
Reset manual overheat safety switch (See
item immediately above).
e. Heater element burned out. Check continuity with an ohmmeter. Replace
heater element.
Humidifier Inoperative a. Water supply has been turned off or not
connected.
Connect and/or turn on water supply.
Note: See humidifier
manual for additional
help.
b. Humidifier switch is in “Off” position. Turn switch to “Auto/On” position.
c. Electrical connections are loose. Tighten electrical connections.
d. Humidifier circuit breaker tripped. Check for over current by the humidifier elec-
trodes. Drain water from tank and refill. Reset
circuit breaker.
e. Relative humidity is above set point. Adjust humidistat set point.
f. Humidistat yellow status LED is flashing. Consult humidifier manual.
g. Water conductivity is too low. Add 1/4 teaspoon (1.23 ml) of table salt to
the water through the top of the cylinder.
Typically only required on initial start-up.
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