riderman523 Posted October 25, 2014 Share Posted October 25, 2014 On my 2014 Mack Granite the temp control and vent selector isnt working. My old granite had the rods attached behind it. These seem like an electric switch. Is there a fuse I can check to make these work? Quote Link to comment https://www.bigmacktrucks.com/topic/37489-temp-and-vent-controls/ Share on other sites More sharing options...
Macktech689 Posted October 25, 2014 Share Posted October 25, 2014 2 fuses in the electrical center in the center of the dash below the triangle shaped cover power the HVAC controls, they are F25 and F70. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/37489-temp-and-vent-controls/#findComment-264402 Share on other sites More sharing options...
riderman523 Posted October 26, 2014 Author Share Posted October 26, 2014 I pulled the fuse(circuit breaker type) out and put it back in and now it is working fine, do they reset when you pull them out or maybe a leg on it wasnt making contact? Thanks for your help! Quote Link to comment https://www.bigmacktrucks.com/topic/37489-temp-and-vent-controls/#findComment-264534 Share on other sites More sharing options...
Macktech689 Posted October 26, 2014 Share Posted October 26, 2014 Possibly just poor contact, the breaker should reset without removing it unless there is a short in the circuit. If the system fails again you will need to check the wiring. Quote Link to comment https://www.bigmacktrucks.com/topic/37489-temp-and-vent-controls/#findComment-264535 Share on other sites More sharing options...
wheeler73 Posted October 26, 2014 Share Posted October 26, 2014 Also the problem could be a loose pin in the fuse panel. I see that alot. Sometimes you can use a small pick and spread them sometimes you have to change the whole panel as the pins do loose their tension. To change the whole panel is easy if you need to. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/37489-temp-and-vent-controls/#findComment-264540 Share on other sites More sharing options...
riderman523 Posted November 18, 2014 Author Share Posted November 18, 2014 Is that a circuit breaker or a relay? It is still blowing. It only blows when the ambient temp gets to 70 or higher. It has been at the dealer for 2 weeks now and they have no clue. I think it has to do with the hi pressure cut off on the a.c. It looks like i will have to bring it back to them in the spring time when it gets hot because they say the condition isnt present now, and the can not fix whats not broke. what condition would make that blow? Quote Link to comment https://www.bigmacktrucks.com/topic/37489-temp-and-vent-controls/#findComment-267137 Share on other sites More sharing options...
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