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Tab. 5.d
PROBLEM
1.
No electrical power
2.
ON/OFF switch of the humidifier
The humidifier
in position 0 (open)
does not turn on
3.
Control connectors improperly connected
4.
Blown fuses
5.
Transformer failure
1.
Remote ON/OFF contact open
2.
The humidistat has not been connected correctly
3.
Humidistat failure
4.
Control signal not compatible with the type set
The humidifier does
5.
Value measured by the sensor/s higher than the
not start operation
corresponding set point
6.
Fan relay not activated, or furnace blower not
activated or connected to C/NO on steam
humidifier
1.
High steam back pressure
The humidifier fills
2.
Fill valve strainer clogged
with water without
3.
Mineral in the fill cup
producing steam
4.
Drain pump valve leaking
1.
The distributor is not installed correctly (too near
the top of the duct or the condensate return is
Excess humidity or
blocked)
moisture in the duct
2.
Air flow rate is too low
3.
Humidifier active when the fan in the duct is off
1.
The humidifier drain is blocked
2.
The supply water or overflow circuit has leaks
Water leaks on to the
3.
The steam hose is not properly fastened to the
floor below
cylinder
4.
The bushing and / or O-ring at the base of the
cylinder are missing or not properly seated
Water in the cylinder
1.
Minerals in the cylinder have over-concentrated
turns black
and are deteriorating the electrodes
Heavy arcing occurs
1.
The feed water contains large amounts of iron,
within hours of
copper or other conductive contaminants
start-up
1.
Mineral has bridged between the electrodes
2.
There is back pressure from the steam hoses or
Humidifier continuo-
duct
usly fills and drains
3.
The flow regulator in the fill valve is broken or out
without producing
of place
steam
4.
Water conductivity is very high
5.
Water is foaming excessively
Tab. 6.e
6. TROUBLESHOOTING
CAUSE
26
SOLUTION
1.
Check the safety devices upstream from the humidifier and the
presence of power
2.
Close the switch on the panel: position I
3.
Check that connectors are properly inserted in terminal block
4.
Check the condition of fuses
5.
Check that the proper voltage is connected and turned on
1.
Close ON/OFF contacts
2.
Check the external connection
3.
Replace the humidistat
4.
Check furnace fan / blower operation
1.
Check that the steam hose is not kinked or sagging, trapping
condensate
2.
Clean the fill valve strainer
3.
Clean the fill cup
4.
Check for voltage at the drain pump valve and/or drain pump
replacement
1.
Check that the steam distributor is installed correctly
2.
Increase air flow in duct or decrease PO maximum steam production
setting
3.
Check the connection of the device (flow switch or differential pressure
switch) controlling the humidifier to the ventilation in the duct
1.
Clean the drain assembly and pan
2.
Check the entire water circuit
3.
Check the fastening of the hose clamps on the steam outlet
4.
Lift out the cylinder and check to see the bushing and / or O-ring are
properly seated (See illustration Page 21)
1.
Check for sags & kinks that could trap condensate in the steam hoses
that could cause a back pressure on the cylinder
2.
Check the duct static pressure
3.
Check the fill valve and inlet strainer
4.
Check the drain pump operation
5.
Correct installation problems and replace cylinder
1.
Contact the factory for an optional drain timer to force additional
drains to control the minerals
2.
Discontinue use if you are using a water softener
3.
Check the electrodes in the cylinder to be sure they were not damaged
in shipping
1.
Use instruction in Section 4.4 to power clean or replace the cylinder
2.
Check the steam hoses for kinks or gullies that might be trapping
condensate
3.
Replace the fill valve
4.
Consider using a mix of demineralized water with raw water
5.
Check cylinder - replace if exhausted. If feed water contains silica or
nitrates, install a 1-micron water filter
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