Coleman 7680b 856 blower cycling

[Trason]

hey there i have a Coleman model:7680b series:856 on natural gas no ac just heat. If its cold (50) and i turn the thermostat up (70) everything works great. once the temp in the house gets up to 70 the burner goes out and the blower runs for a minute (cooling the chamber) then the blower turns off. however the the blower kicks back on (no burner) runs for 10-15 sec then blower turns off. sometimes the blower will cycle like this for several minutes. is the fan switch going bad? and telling the blower to turn off before the chamber is really cooled down? then it heats up enough to turn the blower back on again?

[Robert]

Hi,

Could be a bad fan switch, heat not being dissipated and dispersed adequately from the heat chamber to name most common reasons.


Thanks,
Robert