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Humidifier Troubleshooting & Repair
| WHAT
IS WRONG WITH YOUR HUMIDIFIER?
This guide covers only furnace-mounted humidifiers. If you need help with your free-standing humidifier, see the owner's manual. Warning! To avoid personal injury or even death, always disconnect your appliance from its power source--that is, unplug it or break the connection at the circuit breaker or fuse box--before you do any troubleshooting or |
| It leaks It works fine, but the house is too dry It's noisy It doesn't run at all There's no water in the reservoir There's no water flowing through my flow-through type filter pad The pad doesn't spin More about humidifiers Humidifier replacement parts |
| Note: If your repair problem
isn't listed, click
here to email the RepairGuru. He will give you the help you need. |
The water supply attached to
your residential humidifier provides the moisture that's necessary
to adequately humidify your home. The water supply may be turned on
by the humidifier to fill a reservoir tank--or it may continuously
flow over a filter medium whenever the furnace blower is on.
|
Furnace-mounted humidifiers have
one major drawback, they humidify only when the furnace blower is
on. If your house is well insulated and you have a high-efficiency
furnace, the blower may not run long enough to evaporate an adequate
amount of water into the air. Then you have two options:
|
| While humidifiers run, they either
add water to the filter pad or reservoir, or they spin their cylindrical
pad through the reservoir. The solenoid that allows water to flow
into the flow-through type can be noisy, as can the motor that spins
the pad in a reservoir. There's usually no remedy for this noise.
If it's very noticeable or bothersome, a qualified heating and cooling
contractor may be able to help. |
| If your dehumidifier does nothing
at all, the humidistat may be set too low or too high. Try turning
the humidistat to a setting calling for greater humidity, then turn
your furnace up 5 degrees higher than the current room temperature.
When the furnace blower turns on, the humidifier should function.
If it doesn't, you may have lost power to the unit, or one of the
electrical components may have failed--the valve, motor, or step-down
transformer. If these are okay, check for a problem in the water supply,
or contact a qualified heating and cooling contractor to diagnose
and fix the problem. |
| If there's no water in the reservoir,
first make sure that water is getting to the humidifier. The humidifier
must have a good stream of water available to it. If there's water
in the water line but the reservoir doesn't fill, replace the float
mechanism inside the humidifier. |
| If there's no water flowing through
the humidifier filter pad, first make sure that water is getting to
the humidifier. The humidifier must have a good stream of water available
to it. If there's water in the water line but it's not flowing to
the pad, you may have a stuck, clogged, or defective water valve. Often these valves can be cleaned. Try removing the water line from the inlet side of the valve and cleaning out the valve. There may be sediment clogging the orifice. If it's clean, check the coil with an ohm meter; it may be burned open, or the humidistat transformer may have failed. If none of these is the problem, we suggest you contact a heating and cooling technician for further assistance. |
| A small motor on the side of
the humidifier spins the rotating filter pad on the reservoir type
of humidifier. If it doesn't spin, adjust the humidistat to make sure
it's calling for more humidity. Then turn on the furnace. When the
furnace blower is on, if the pad still doesn't rotate, the motor may
be defective. If so, you need to replace it. |
Still haven't found, what you looking for here? We have more details on humidifier repair for you to detect what's wrong with your home appliance. |
Warning! To avoid personal injury or even death, always disconnect your appliance from its power source--that is, unplug it or break the connection at the circuit breaker or fuse box--before you do any troubleshooting or repair work on your appliance. Also, because some components may have sharp edges, use caution while working on your appliance.
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