Any one have any ideas to help me out? Took the heater out of the MH to clean the burners. Only about half of them worked during my Dec. camping trip. Since reinstalling, I now have a problem with the unit backfiring and blowing out the pilot. It will cycle 6 to 8 times before this happens. Have tried cutting down the air and also have increased the air to the burner. I was thinking that maybe the main gas valve was leaking to the burner and letting the propane build up to cause this backfire. Shut system down and purged with the blower. Let it set about an hour. Then run a sniffer inside burner chamber, no gas detected. Other than this backfiring the unit works very well in getting the MH heated. Fired it up last week with temps outside at 18 degrees, took 20 minutes to heat up interior, thermo cycled unit 6 times over next 2 hours, small backfire and blew pilot out.
Any ideas?
