Help.. I'm confused.
I just recently replaced my ts2021 and had no PSI so I changed the Unloader had a spare. I thought pump was bad at first because new pump gave me less pressure then one I took off. To verify it wasn't pump ran it without Unloader with open Gun. I had the Pressure, so I put unloader back on. I still had a problem.. no pressure maybe 500 PSI.. started pulling my hair at this point, anyway after a few hours of checking unloader over and over again, I figered it out, the holding tank has a pinched hose( a kink) going into the pump... Silly me.. Thinking at this point someone is toying with me.. So now I had Factory Pressure.. ready for my Job..To my dismay NO Heat!! Checked Spark,fuel,filter cleaned out coil (Compressor and Vac) Spark is good But no Fuel out of Burner Nozzle, Blew Nozzle with air No blockage...Still no Heat .. and no Fuel coming out of nozzle with switch on.. Took apart pump because of screen inside cleaned out. Anyway though at this nozzle, or vac switch bad,, Or Unloader.
So I had to do my Fleet wash without heat and lots of Bugs... What a pain..
I had no spare nozzles (Becket) of unloader or vac switch on hand...
But while on site I was trying heat again while my Helper was washing bug juices off noticed he closed the trigger on gun, putting unloader into bypass triggering burner to fire up... o I'm confused.. The Burner will only run in bypass with closed gun.. Help.. any Idea's??? switch or unloader or??