2013 Volvo 670 No heat from the dash, bunk heat is fine.
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by LeBubba, Dec 20, 2018.
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Maybe elaborate a little more? It doesn't blow from the dash? it blows but no heat? Blows heat from the floor but not the dash? If you're not getting any air than it'll be the blower motor or the module. Not too often HVAC control, depends on what exactly it ain't doin'.
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Check your blend door in the climate contol housing. If you can take your dash panels off, you will see a white “y” shaped knob that moves up and down when the temp is changed from hot to cold.
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Look for this valve . Open it all the way . Unless it has a separate motor , could be the motor . Also shut off your bunk heater and run just the front dash
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Thanks for the tip. The TA at Raphine VA were totally stumped. I'll look into that much thanks.
laaylor Thanks this. -
Mine is the opposite! Every setting on the front is blowing at a million degrees! But, my apu won’t fire up at all.. ugh.. lol
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