fox_forma Posted January 1, 2014 Report Share Posted January 1, 2014 Been quite some time hitting the boards but figured if anyone can help me it's here. My truck whereabouts 1000 miles a year now so it's been sitting quite some time. Recently after sitting for a while my HVAC is all jacked up. First thing I noticed was my fan speeds weren't responding to the proper setting and it would stay on low speed then eventually jump to the proper speed after about 15min of driving. Second issue is the dials jump all over the place when turning them for temp adjustment. They will not just go up or down, they increase 1 or 2 degrees then decrease by 4 or 5 and so on. Seemed to of got worse this past summer when the battery died and I had to put a new one in. Anyone else have any issues like this? Sent from my VS980 4G using Tapatalk Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted January 1, 2014 Report Share Posted January 1, 2014 Sounds like you need to replace the unit. Quote Link to comment Share on other sites More sharing options...
RockHead Posted January 1, 2014 Report Share Posted January 1, 2014 I had that happen to me a couple of years ago I had to replace a resistor within the unit... I will try to find a part number for you. Sent from my SCH-I545 using Tapatalk Quote Link to comment Share on other sites More sharing options...
fox_forma Posted January 1, 2014 Author Report Share Posted January 1, 2014 Is the culprit the actual display or a resistor at the fan cause I recall a bulletin for the fan resistor when I was searching for an answer. Thanks Sent from my VS980 4G using Tapatalk Quote Link to comment Share on other sites More sharing options...
Blown 346 Posted January 1, 2014 Report Share Posted January 1, 2014 if its the fan resistor the normal issue is the fan speed working on only certain settings or it doesnt work at all. The actual digital display showing different temps sound like a short in the unit itself Quote Link to comment Share on other sites More sharing options...
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