We have had our P68 for a little over 4 years. Has been running great. Just recently have started hearing the blower kick on and off fairly frequently. This is something new. Tonight, I heard it cycle on and off several times per minute. Checked the control panel & each time it cycled, the dist. blower light would go on & off. Any ideas what the cause may be? Thank you in advance.

Also noticed not to long ago, even when the thermostat is down to lowest point & distribution dial is turned to the off position I have been hearing a noise as if it was going to turn on. As quick as the noise comes, it is gone just a s fast.