AC Problem

1140948

{"text":"Hi guys\n\nI have 2021 Volvo VNL860. Front dash fan not working sleeper fan working. Checked fuses looks normal. Please anybody help.","videos":"[]","link":"{}","pics":"[]","canComment":true,"externalShare":false}

1157302

{"replyToPid":0,"replyTo":"","text":"are you sure you checked all fuses?\nit's more than likely a multiplex issue (hvac computer not receiving signal from switch.)\nI suggest pulling switch out and unplugging and plugging back in.\notherwise dealer will have to hook to hvac controller probably clear a code for $200 \nthen go trade it in on a long nose and get a pair of boots"}

279311

{"replyToPid":0,"replyTo":"","text":"If it’s not a fuse, it will be the blower fan. There are two blower fans, one for the front of the truck and another for the sleeper. And while you’re at it, replace the screen/air filter for these blower fans. There’s also another air filter for the cab under the hood. This one is an actual filter while the other two are just thin flexible screens. I’m not referring to the engine air filter. That one is big and there’s typically a small gauge under the hood that will tell you when it needs to be replaced. "}

746894

{"replyTo":"","text":"I have the same problem with my 2021 Cascadia freightliner if you have optimize idle on and do not shut it off correctly and you start driving your cab fans will not run. You need to shut the truck off completely and restart the engine, your fan should work","replyToPid":0}

854978

{"replyTo":"","text":"fill it up with freon put 4 pounds of freon in it right away","replyToPid":0}

279311

{"replyTo":"

854978 发表于 2021-06-07 18:10:16 fill it up with freon put 4 pounds of freon in it right away

","text":"I think his A/C is working, but the front blower fan is not. Without the blower fan working, the freon won’t make it to the inside of the truck.","replyToPid":427916}

1157302

{"replyTo":"

147103 发表于 2021-06-07 13:20:28 There is 3 things it can be. Fan switch, fan relay or fan.  if you have test light. you can find issue easily

","text":"hard to use a test light anymore. most wiring is signals to and from modules","replyToPid":427896}

1140948

{"replyTo":"","text":"Thanks Guys ","replyToPid":0}

1019162

{"replyTo":"","text":"happends to our 2023s the switcher gets stuck timing","replyToPid":0}