I am having this exact same issue with my Coleman Model DGAA077BDTB the flame goes off and on, the blower blows cool room temperature air no heat. and the unit is turning off and on. hvac guy suggested it could possibly be my pressure switch which i have just ordered to replace it even if its not my...

Cloleman home heating unit Model: DGAA077BDTB Is it possible to BYPASS my units pressure switch to test if the part is bad or not? I.E. if i connect the two wire terminals via a wire will the switch then be bypassed and run the heater without the part operating? I have already gone ahead and placed ...