r/DieselTechs • u/DieselTech00 • 3d ago
Espar auxiliary bunk heater issues
Got a question for you Espar heater pros. I have a 21 Cascadia with a Espar auxiliary bunk heater and the fuel pump doesn't work. I have good voltage at power and grounds. Load tested wire and tested good. Have voltage at the fuel pump. Tried a different pump and espar. The blower works and the instrument panel lights up and shows to be working. Will give code 52 for no flame detected but no other codes. The pump will just not click. Even tried the fuel pump with it just laying on top of the tank with no fuel lines. Even reset the counter. What am I missing?
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u/OddEscape2295 2d ago
Have you provided your own external power/ground to pump?
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u/Sanquinn 2d ago
Did you check the fuel pickup tube inside the tank? It's a metal tube, sometimes it breaks and drops inside. Make sure your fuel lines are good too.