Re: It's getting toasty in here! ('41 Packard 110 Heater stuck on)

Posted by HH56 On 2014/7/5 8:56:23

There should be a fan if it was a Packard heater and the lighted bulb would tend to indicate there was. IIRC, the bulb is internally connected separate from the fan connection so it is possible the bulb could light even if fan was disconnected. There were different models of heater, defrosters, and combinations of the two.

Under seat heaters didn't have doors but were frequently sold with a separate defroster which did have a very small door on the side or bottom. Defrosters were a plain type box which predominately had tubes running upward to outlets below WS. The deluxe combination units had both tubes and doors with reversible fans or dual motors to take care of both functions.

Not sure if 41 had the fresh air option available but that was a long round duct in engine compt between grille area and firewall that would direct outside air thru firewall to rear of heater/defroster unit. If you have one of those and the duct door is not functioning that could deliver heat all the time with no fan running.

Need to know more about what is installed to offer much info on the air part.