Thermolec AcuSteam - Manual (Page 9)

Page 7
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6. What To Do if a Malfunction Occurs
6.1 Shut the main power OFF and restart the humidifi er to see if the error code (fl ashing red light)
disappears.
6.2 If you see a water leak, follow the water supply tube and close the valve installed on the water pipe
located near the humidifi er.
6.3 Please refer to the error code table to identify the possible cause of the malfunction and the actions that
you can take.
6.4 Should the problem persist, please call your service company for they are the best qualifi ed to help you.
Describe the problem to them and mention the error code you observed on the front panel. They may be able
to help you solve the problem over the phone. If not, they can call our technical service department.
6.5 Should you attempt to look at the unit yourself, please apply all appropriate safety measures. - Shut the
main power OFF and wait for the unit to cool before you open it.
7. Description of Error Codes
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 after
switching 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
Legend: SS = stainless steel, FF = furnace fan, SW = supply water, HLS = high level sensor, LLS = low level sensor