Bionaire BCM5520RC User Manual

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• LED not illuminated.

• Mist output minimal to

none.

• Water leaks from water 

reservoir.

• Water Filter turns brown.

• Film on water reservoir.

• Water cloudy.

• Humidistat cycles on/off.

• Very tight reservoir cap.

☛ Unit not plugged in. 
☛ Power failure.

☛ Filter has not 

absorbed water.

☛ Mineral buildup in base.

☛ Humidistat is set too low.

☛ Wick Filter needs 

to be replaced.

☛ Normal operation.

☛ Rubber O-ring is missing 

or improperly placed.

☛ Reservoir Cap not 

tight enough.

☛ Your filter needs  

to be changed.

☛ In areas with particular 

hard water your wick 
filter will need to be 
changed frequently.

☛ Mineral deposits cause 

film on tank to build up.

☛ Filter needs  

to be replaced.

☛ Using warm water

to refill reservoir.

☛ Humidifier is reacting 

to room humidity level.

☛ Over tightened.

✔ Plug in unit.
✔ Check circuit breaker or 

outlet.

✔  Wait 15 minutes before 

starting humidifier.

✔ Regular cleaning of tray

after each use will help
keep the unit functioning
properly.

✔ Set the humidistat to 

high.

✔  Replace your wick filter 

(BWF100) by calling 
1-800-788-5350, or visit 
www.bionaire.com.

✔ Mist is invisible.
✔ Check to see if inlet or 

outlet grills are blocked

✔  Remove reservoir 

cap then replace 
or reposition ring.

✔ Tighten the 

reservoir cap.

✔  Replace your wick filter 

(BWF100) by calling 
1-800-788-5350, or visit 
www.bionaire.com.

✔ Use Clean-Away

TM

Solution (DMS216), to
order call 
1-800-788-5350, or visit
www.bionaire.com.

✔ Replace your wick filter

(BWF100) by calling 
1-800-788-5350, or visit
www.bionaire.com.

✔ Refill using cool water.

✔ Set the humidistat to a

higher or lower setting.

✔ Add liquid soap or 

petroleum jelly to cap 
gasket to ease opening.

Fig 3

5. Check the Filter Monitor to see if it is time to replace

the filters.  Depending on water hardness in your area,

it may be necessary to change the filter every 1-2 
months.  Re-insert the wick filters into the wick frame. 

6. Refill the water tank as directed with cool tap water, 

replace the humidifier housing, and turn the unit on.

If your humidifier will not be in use for two days or more, or
at the end of the season follow these instructions.

1. Clean and dry the humidifier thoroughly as per the

“Weekly Maintenance” instructions.

2. Let the humidifier dry completely before storing. Do not

store with water inside the base or water reservoir. 

3. Remove the reservoir cap. Do not store with the reservoir

cap in place.

4. Throw away the wick filters. Do not leave a wick filters

inside the humidifier.

5. Store in a cool dry location.

6. Order your new filters so they will be ready for next 

season.

1. Do NOT attempt to repair or adjust any electrical or

mechanical functions on this unit. Doing so will void the
warranty. The inside of the unit contains no user
serviceable parts. All servicing should be performed by
qualified personnel only.

2. If you need to exchange the unit, please return it in its

original carton, with a sales receipt, to the store where
you purchased it. If you are returning the unit more than
30 days after the date of purchase, please see the
enclosed warranty. 

3. Should your humidifier require service, please call 

1-800-788-5350 in North America for further assistance. 

4. If you have any other questions or comments, feel free to

write to us or visit our website www.bionaire.com

The Holmes Group, Inc.
Consumer Service Department
32B Spur Drive
El Paso, TX  79906

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