The nouns control display surrounded by my home in a minute shows "filter". When I press the "filter" button, it shows a "246"? What does all of this parsimonious, as I am (obviously) clueless...Thanks....

What does all of this parsimonious, as I am (obviously) clueless...Thanks....
My apartment smells approaching gas when I cook?
Answers:    that is a reminder to redeploy and or clean the heavens filter the thermosta is set to remind you every 246 days or run hours depending on the thermostat