Reddy Heater C4 Code

[Redfishtony]

I recently picked up a used Reddy heater (Wheel borrow model). When I tried it the first time it ran about 2 minutes then shut down giving me a C3 code. There seemed to be about 1/4 tank of fuel but i filled it up and it ran fine. Now its running about 4 minutes and shutting down giving me a C4 code. Any ideas? Fuel Pressure, filter, control board???? Thanks, TW

 

[Redfishtony]

No heater experts out there?

 

[Stuff]

Try a search. Others seem to have the same problem. https://www.google.com/search?q=Reddy+heater+c3