FILTER MISSING ERROR (INSTALL FILTER)
Cause
An “IF” (IF) error code will display, and the machine will not start if the lint filter is left out of the machine. A magnet embedded in the lint filter activates the reed switch mounted internally in the plastic housing of the vent duct.
Solution
Check for lint filter installed and if not then properly install the filter.
Check lint filter reed switch for continuity.
DETAILS BELOW:
Another design you may see
(unfolded to show the magnet).
There should be 5Vdc on the Main PCB till the filter is installed then it should go to 0Vdc.
