TROUBLESHOOTING GUIDE
PROBLEM
SOLUTION
Unit shuts off unexpectedly
Check that the unit is plugged into a working electrical outlet.
or does not operate.
Check that the filters, UV-C shield and front panel are
installed correctly.
Check that the motor protector triggered. Unplug/replug into unit.
Check that the front panel is latched firmly in place.
Call Customer Service.
No air circulating from unit.
Unplug unit. Check filters. Clean Pre-filter if necessary.
Replace Charcoal and HEPA filters if necessary.
Increase in noise level.
Make sure the filters are clean. Replace if necessary.
Odors and smoke are not removed.
Clean or replace the filters if they appear to be heavily soiled.
Discharged air has an aroma or odor.
Check to see if the filters are heavily soiled. Replace the filters.
Air Purifiers emit small traces of ozone which may produce an
odor.
What is CADR?
CADR stands for "Clean Air Delivery Rate," which indicates the volume of filtered air delivered by
an air purifier. CADR ratings show the effectiveness of how efficient the air purifier is at capturing
fine particles from things like tobacco smoke and plant pollens from the room.
Clean Air Delivery Rate
From air cleaner to air cleaner, compare the CADR numbers. First look at suggested room size. Then refer
to the Clean Air Delivery Rate (CADR) numbers. The higher the number, the faster the unit filters the air.
Refer to website for individual model CADR numbers.
LIMITED WARRANTY
To the consumer, Guardian Technologies LLC warrants this product to be free of defects in materials or workmanship
commencing upon the date of the original purchase. Save your original sales receipt to validate start of warranty period.
Warranty is not valid without receipt. If this product should become defective within the warranty period, we will repair or
replace any defective parts free of charge. All warranty repairs must be completed by Guardian Technologies LLC. This
warranty does not cover unauthorized repairs. The warranty does not include unusual wear, damage resulting from
accident, or unreasonable use of the product. This warranty only covers the product when used with genuine Guardian
Technologies accessories. This warranty covers product that was purchased from authorized distributors. This warranty
gives you specific legal rights and you may also have other rights (other rights may vary from state to state in the U.S.A.)
The product warranty registration can be completed online at www.guardiantechnologies.com. We consider the
registration process important to ensuring superior service to our customers, however submitting the warranty registration
is optional and does not affect your rights to utilize this warranty according to the conditions stated above. To submit
product under warranty the complete machine must be delivered pre-paid to Guardian Technologies LLC. Please include
complete information including: the problem, the model number of the product, the day of purchase, and a copy of the
original sales receipt along with your name, address, and telephone (email optional). Address returns to the attention of:
Customer Service, at the address below. Additional questions or comments can be made toll free to the number listed below.
Additional copies of the instruction manual can be obtained by accessing and
printing directly from our website or calling customer service.
Guardian Technologies LLC
26251 Bluestone Blvd. | Euclid, Ohio 44132
1.866.603.5900 | www.guardiantechnologies.com
©2017 Guardian Technologies LLC
USE & CARE INSTRUCTIONS
3-in-1
Allergen and Odor Reducing
Air Cleaning System
Model No. AC5900
3-Year Limited Warranty
Customer Service
1.866.603.5900
www.guardiantechnologies.com
Date Purchased
month ________ year _________
English E - 1 French F - 1 Spanish S - 1
Note: Do not void warranty – use GENUINE Guardian Technologies replacement parts only.
REV0617
E-1