User Manual

Page 31
CONTRACTOR
Number of fl ashes
of the red light
Error Description Humidifi er Status
Actions to be Taken
by the Technician
Reset
OFF
No error The humidifi er is working fi ne None
Countinuous
ON
The fl ood sensor under the tank senses water in the pan.
Humidifi er immediately suspends the
ongoing operation. Heating elements and supply valve are switched off. The power green light is blinking.
Turn power off. Check for leaks around the tank clamp, SW valve and drain tube. Make sure tank arrows align and gasket is sealing properly.
Automatic Reset when Overfl ow pan dries up.
1
The two water level sensors are miswired or do not read the water level properly.
Humidifi er attempts to operate, then stops
because of wrong information from water level sensors. The power green light is blinking.
Turn power off. Clean or replace HLS or LLS water sensors. Check for proper wiring of HLS and LLS sensors.
Automatic Reset when switching main power ON
3
Inadequate water supply. The supply valve was open for more than 6 minutes.
Humidifi er immediately suspends the ongo-
ing operation. Heating elements and supply valve are switched off. The power green light is blinking.
Turn power off. Check SW valve circuit for 24V DC at the valve. Refer to manual (p. 20) and check for proper drain installation. Make sure SW shut-off valve is open, SW valve is responding and SW tube is clear of debris.
Automatic Reset after 5 min or when switching main power off and on
4
Inadequate drainage. The tank did not drain or the draining cycle is too long.
Humidifi er immediately suspends the
ongoing operation. Heating elements and supply valve are switched off. The power green light is blinking.
Turn power off. Check for proper drain setup by referring to manual (p. 20). Check and clean tank, SS siphon tube and silicon drain tube if necessary.
Automatic Reset when switching main power ON
5
The air pressure switch does not detect enough air pressure OR the high limit HSTAT (optional) senses extremely high humidity in the duct.
Humidifi er immediately suspends the
ongoing operation. The unit goes back to normal operation as soon as the error condition disappears. The power green light is blinking.
Check if the FF motor is running. If not, turn FF to continuous operation. Check fl ow sensor
(pitot tube) in duct for blockage, then make sure plastic tube is connected properly from fl ow sensor to PD switch under PC board in unit (see manual). Change furnace fi lter if needed.
Automatic Reset when error conditions disappear
6
Temperature inside the tank exceeded the high temperature cut-out setting.
The high temperature cut-out has tripped. The humidifi er immediately suspends the ongoing operation. Heating elements and supply valve are switched off. The power green light is blinking.
Turn power off. This is a serious condition and will likely require assistance from a service technician. Call 1-800-336-9130.
After pushing on the thermal cut-out button, automatic reset when switching main power ON
22. Detailed Error Codes
Legend: SS = stainless steel, FF = furnace fan, SW = supply water, HLS = high level sensor, LLS = low level sensor