** Hotpoint [
GAS] dryer model DLL1550BGLWH only heat [intermittently] **
The first step would usually be to check to see exactly what the gas burner's ignitor (glow coil) is doing *at the times the dryer won't heat*.
If you're unfamiliar working on dryers and you want to attempt to repair it yourself, you might considering getting a repair manual for it. Hotpoint appliance are built by GE. GE has a very good consumer oriented repair manual for their dryers (see the following link).
- GE built Gas/Electric Dryer Service Manual
LINK >
http://www.appliance411.com/data.php?rc=2512
JFYI
Dan O.
www.Appliance411.com/parts/?ref411=GE_Dryer
The Appliance Information Site
=D~~~~~~