I apologize for the similar post to the DLE5977 post, but I think this is a different problem.
Background: This LG dryer is at least 6 or 7 years old. Has worked great until 3 days ago.
Problem: No heat on using any settings (e.g. Normal, Air Dry, Speed Dry). The diagnostic code flashes 19:F0/U01. Hit Start/Pause 3 times temp stays at 21 to 22.
So far, I have cleaned out the venting system - inside dryer (as far as hand reaches) to outside house vent. Good air flow.
1) Am I looking at a gas valve issue? I have not had a chance to check it because I will be leaving in hours and will not be able to work on this for about a week.
2) Is there a quick and easy temporary fix for the dryer until I can work on it next week?