Fuzz Posted April 1, 2017 Report Share Posted April 1, 2017 Fan quit working on heater and AC in front..Sleeper fan OK. checked for fuses found one for AC controls (10A).It was OK. Now what? It was working OK when I parked it.Sat a couple of days and Kaput. 2001 Volvo 770-2003 travel supreme36 Link to comment Share on other sites More sharing options...
jeffw Posted April 1, 2017 Report Share Posted April 1, 2017 Is it dead at all fan speeds? 2007 Volvo 780 Volvo D12D, 465hp, 1650 ft/lbs tq., ultrashift Link to comment Share on other sites More sharing options...
Fuzz Posted April 1, 2017 Author Report Share Posted April 1, 2017 Thanks for looking Jeff.Yes dead at all speeds 2001 Volvo 770-2003 travel supreme36 Link to comment Share on other sites More sharing options...
Big5er Posted April 1, 2017 Report Share Posted April 1, 2017 Fuzz, I don't know why, but I was thinking the cooling fan was one of the relay's in the fuse panel. I could be wrong. Did you look at the fuse panel map for them? They are all the same anyway, if one says it is the fan, just swap it with another and see if it works. That will tell you it is the relay. Of course there is always the basic stand by....pull all the wires off the battery and count to 20. Reconnect them and see. MY PEOPLE SKILLS ARE JUST FINE.~It's my tolerance to idiots that needs work.~ 2005 Volvo 780 VED12 465hp / Freedomline transmission singled mid position / Bed by Larry Herrin2018 customed Mobile Suites 40KSSB3 2014 smart Fortwo Link to comment Share on other sites More sharing options...
MrSeas Posted April 1, 2017 Report Share Posted April 1, 2017 What year and model of truck? Auto or manual A/C controller? Does you engine fan cycle on or off when you are trying the A/C function? Are you getting cooled and heated air to the rear HVAC system? Link to comment Share on other sites More sharing options...
Fuzz Posted April 1, 2017 Author Report Share Posted April 1, 2017 It's a 2001 Volvo 770..A/C not "climate control" ie, manual.The A/C in rear works...cold air and heater when selected.. It's been sitting for about 6 hrs.and it's cool today around 60deg.Idled it to warm it up a little to see if warm air in back(there was). Engine fan did not come on when turning on A/C.being as cool as it is I was thnking that was normal...Gonna go look for a relay now.. Thanks for the help folks 2001 Volvo 770-2003 travel supreme36 Link to comment Share on other sites More sharing options...
jeffw Posted April 1, 2017 Report Share Posted April 1, 2017 If you end up needing to replace the blower motor or resistor module (on the fan), there's a how-to guide here: 2007 Volvo 780 Volvo D12D, 465hp, 1650 ft/lbs tq., ultrashift Link to comment Share on other sites More sharing options...
Fuzz Posted April 2, 2017 Author Report Share Posted April 2, 2017 Wow tlhanks for the video link ,Jeff 2001 Volvo 770-2003 travel supreme36 Link to comment Share on other sites More sharing options...
Fuzz Posted April 2, 2017 Author Report Share Posted April 2, 2017 Thanks again folks,I couldn't see a relay that was for the blower fan..at least not one marked that might be it. 2001 Volvo 770-2003 travel supreme36 Link to comment Share on other sites More sharing options...
jeffw Posted April 2, 2017 Report Share Posted April 2, 2017 I don't think there's a relay since it's multiple speeds. One of the common failure modes on the volvos is for some speeds to stop working, and that's the failure of the control panel. The truck we bought had that problem, and it was intermittent. Replacing the panel fixed it. -j 2007 Volvo 780 Volvo D12D, 465hp, 1650 ft/lbs tq., ultrashift Link to comment Share on other sites More sharing options...
bags Posted April 2, 2017 Report Share Posted April 2, 2017 Move to someplace where you do not need a heater. tis that time of year. Good luck JB John and Michal Bagley 1999 Volvo 610 the 'Millennium Falcon', 400 hp ISM, Autoshift Gen 2, single axel w/steel bed, Pressure Pro, VMSPC, Trailer Saver Air Hitch, 3 bags, 38 foot Royals International, and our 3 dogs. Link to comment Share on other sites More sharing options...
NeverEasy Posted April 2, 2017 Report Share Posted April 2, 2017 The Resource Guide has schematics for the AC here: http://www.dmbruss.com/zSchematics/SchematicsCabInterior599.htm Chet & Deb '01 Volvo 660 w/ Smart '19 Forest River Columbus 320RS 5th wheel 2022 Chev 2500HD Long Bed Retired CWO4, USN and federal service Electronics Tech/Network Engineer/Welder/Machinist Link to comment Share on other sites More sharing options...
Bob86ZZ4 Posted April 2, 2017 Report Share Posted April 2, 2017 Can you get to the blower motor and check if there is voltage when you turn the fan speed on? That's my first place to check for stuff like this. My dash fan speed switch died last year. It first quit on one speed. Then another. And I could tap on the switch and sometimes make it work. That was easy since it was obviously the switch. '03 United Specialties truck conversion, Freightliner FL112, Cat C12, 10 sp Autoshift, 295" w/b, 26' living quarters. St. Paul, MN www.bobwinsor.com Link to comment Share on other sites More sharing options...
Fuzz Posted April 5, 2017 Author Report Share Posted April 5, 2017 Wind let up finally so got to the motor.Pulled the large connector to the blower motor..It does have power when switch is seleted on.No power with switch turned to OFF. Squirrel cages turn freely. Does indicate it is probably in the motor and not the control unit?Should I look at a new blower assembly($80+- on ebay) or just the motor...not sure where to get that if that's what you think I should try.. Again thanks all 2001 Volvo 770-2003 travel supreme36 Link to comment Share on other sites More sharing options...
Big5er Posted April 5, 2017 Report Share Posted April 5, 2017 LOL which looks easier to change? Wouldn't you have to remove the whole assembly to replace the motor? Whats the difference in cost? How yucky is that 16 year old fan (although its easy enough to clean)? MY PEOPLE SKILLS ARE JUST FINE.~It's my tolerance to idiots that needs work.~ 2005 Volvo 780 VED12 465hp / Freedomline transmission singled mid position / Bed by Larry Herrin2018 customed Mobile Suites 40KSSB3 2014 smart Fortwo Link to comment Share on other sites More sharing options...
Fuzz Posted April 17, 2017 Author Report Share Posted April 17, 2017 Replaced blower...$199.95 with shipping to me at Rodeo NM....it works fine now...thanks to all 2001 Volvo 770-2003 travel supreme36 Link to comment Share on other sites More sharing options...
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