[Diesel-Gypsy]

I have to confess, my furnace behaves in the same way......it lights, runs, then shuts off, waits a minute, then re-lights and continues to repeat that cycle until the coach is warmed-up.

Once the coach interior is at the desired temp it maintains the temp in short cycles of about 1 to 2 minutes every 5 or 6 minutes.
It depends a little on how cold it is outside.

I had it looked at in depth by a tech rep from Suburban at the Perry Rally last winter.
He took it out, changed parts, even changed the thermostat on the wall...
The results were marginally better.
He said it basically was a problem that he has seen many times, and it caused by DRV's installation.
It seems it is a combination of restrictive ducting, and poor return air.

The end result is we live with it..... :?