So it's that time of year where, if you have a gas heater, regardless of "how good" you think it is, some basic checks are in order:
1) Fuel lines
2) Exhaust Pipe and gaskets (checking for corrosion, cracks or other issues)
3) Intake and piping (again, checking for corrosion, tears, etc)
4) Wiring - Check fuses and condition of contacts.
Once you've done a check of the above, spend the time to fire the gas heater up in a controlled condition (as in when you can watch it carefully) and confirm everything runs correctly. Run the overheat test as per the Eberspacher repair manuals.
Unfortunately, without fully tearing down the gas heater you can't confirm the Stainless Steel combustion chamber hasn't cracked...but the above is a pretty safe start.
My BN2, which I rebuilt and check yearly, had a cracked exhaust pipe right at the silicone seal. It was minor enough I wouldn't have noticed it without a detailed check. Would have burnt through the brake lines coming from the reservoir if I hadn't noticed.
Check 'em!
-Dave
(cue Bruce posting about SS exhaust pipes)
