Installation Guide

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Figure 15: Front cover of the FILTERSCAN WiFi monitor
Important: If you are not going to calibrate your monitor immediately after installing your monitor,
REMOVE one of the batteries. When ready to calibrate after initial installation, reinstall battery.
Install a clean, new air filter into your heating and cooling system.
Press and immediately release the SEND button to see if Calibration has already been started or done.
A Red Status LED means Calibration has not yet been done. Continue.
1. After power is first applied, wait for approximately 15 seconds (warm up and stabilization time).
2. Turn the HVAC system OFF at the thermostat. Ensure the HVAC system blower is turned OFF and
that no conditions exist during this part of the calibration that would cause air to be moving within the
HVAC ducts, such as opening and closing of doors or windows.
3. Install a clean, new air filter into the HVAC system.
4. Depress the RESET button, holding for two seconds until the STATUS LED turns Green and a beep
is heard.
a. After approximately ten seconds, the STATUS LED will blink yellow for approximately 20 seconds
while the FILTERSCAN WiFi Home Air Filter Monitor records the HVAC system’s FAN OFF
condition. When the blinking amber stops, this indicates proper operation.
i. However, if the STATUS LED blinks red, which means the unit detects air flowing in the air
duct, check to see that the system blower fan is fully OFF and that no condition described in
#2 above exists. If no such condition exists, start again at #1. If the error condition persists,
call 888-414-FLOW (3569) for instructions.
b. IF YOU PRESS RESET BY MISTAKE, press it again for 2 seconds until the Status LED blinks
Amber and a beep is heard.
5. Wait at least one minute before turning your HVAC system ON – The FILTERSCAN WiFi Home Air
Filter Monitor is starting the automatic calibration process during this time, calibrating itself to the air
filter and HVAC system into which it is installed.
6. After the above, to verify communication with the AFS server, log into your AFS account, and select
Filter Status, where you should see “OK” for Status or Device Health.
Your FILTERSCAN WiFi Home Air Filter Monitor is now completely operational, helping protect you from
the consequences of running your HVAC system with a clogged air filter.
The SERVICE FILTER control is a fine tuning adjustment that has been calibrated during production to
the mid-range, which is the Recommended Setting. This control allows the user to change the point at
which the clog alarm will be triggered. Turning the SERVICE FILTER adjustment knob clockwise will