Honeywell Programmable Thermostat Heater "furnace cycles constantly" Questions

...home heating system, it cycles as should, but furnace kicks back in after a minute or less. if furnace comes back on in less than a minute , How does it maintain a constant temperature ? or does it

cycling problem Installed a honeywell programmable thermostat on a Tempstar dc90 furnace. When not calling for heat the blower cycles on and off constantly every 30 seconds sounds like a relay problem

...CONSTANTLY, HOWEVER IT DOES BLOW HIGH COOL AIR FOR A COUPLES MIN. AND THEN .. FULL FLAME AGAIN ...... I would check furnace filter first. If that looks good i would check the thermostat. To check ...