General Filters GeneralAire 5500 Installation And User Manual Download

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Tab. 5.d

6. TROUBLESHOOTING

PROBLEM

CAUSE

SOLUTION

The humidifier
does not turn on

1. No electrical power
2. ON/OFF switch of the humidifier

in position 0 (open)

3.  Control connectors improperly connected
4.  Blown fuses
5.  Transformer failure

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

The humidifier does
not start operation

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
5.  Value measured by the sensor/s higher than the

corresponding set point

6. Fan relay not activated, or furnace blower not

activated or connected to C/NO on steam
humidifier

1.  Close ON/OFF contacts
2.  Check the external connection
3.  Replace the humidistat
4.  Check furnace fan / blower operation

The humidifier fills
with water without
producing steam

1.  High steam back pressure
2.  Fill valve strainer clogged
3.  Mineral in the fill cup
4.  Drain pump valve leaking

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

Excess humidity or
moisture in the duct

1. The distributor is not installed correctly (too near

the top of the duct or the condensate return is
blocked)

2. Air flow rate is too low
3. Humidifier active when the fan in the duct is off

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

Water leaks on to the
floor below

1.  The humidifier drain is blocked
2.  The supply water or overflow circuit has leaks
3.  The steam hose is not properly fastened to the

cylinder

4. The bushing and / or O-ring at the base of the

cylinder are missing or not properly seated

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)

Water in the cylinder
turns black

1. Minerals in the cylinder have over-concentrated

and are deteriorating the electrodes

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

Heavy arcing occurs
within hours of
start-up

1. The feed water contains large amounts of iron,

copper or other conductive contaminants

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

Humidifier continuo-
usly fills and drains
without producing
steam

1. Mineral has bridged between the electrodes
2. There is back pressure from the steam hoses or

duct

3. The flow regulator in the fill valve is broken or out

of place

4. Water conductivity is very high
5. Water is foaming excessively

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

Tab. 6.e