Mack truck heater not working. High is usually direct straight from the switch.

Mack truck heater not working I'm not talking about inside them, I'm talking about the fins and coils on the outside, where air passes thru. In think the module may be built in with the driver side switch. 2015 Mack CXU613 AC fan not blowing, including heater. Replacing original DEF HEATER in 2013 MACK CXU613 Sep 1, 2013 · im hoping someone can help me I have a 2005 mack cv713 granite im getting very little air flow from hvac unit with blower motor on high air just barley comes out. Wait 45 seconds to 60 seconds and kicks back on for a few seconds then back off again. Corrosion issue in connection suspected but where to start? Sep 25, 2018 · Looking at Mack Body drawing 22525262 the mirror heater requires key in ign position to work, moto mirror runs off batt position. 4. There is a blend door that moves to block off the heater core or the AC evaporator depending on if you got the sleeper control panel on hot or cold or somewhere in between. Apr 10, 2017 · Hey guys, I have a 98 378 day cab. One thing that I haven't mentioned is the possibility that the door harness could have a rubbed/damaged spot where it passed through from the cab to the door. Dec 22, 2022 · BigMackTrucks. And it cuts back off. Looking over past post, this has been an issue with other trucks but I did not see any of the fixes. Mar 22, 2022 · BigMackTrucks. Sep 28, 2015 · Posted 9/28/2015 16:48 (#4813274) Subject: Mack truck cold AC but won't blow much air Have a 97 Mack that we have had for several years. Find new and used Mack Heater/AC Control Assys for sale near you. Jun 9, 2017 · To charge our Mack trucks correctly we have to have the engine fan on to move enough air through the condesor. now I have cleaned blue cab filter also checked blower motor for missing fins and dirt and it works great, with black plastic cover of Feb 9, 2018 · The defrost stopped working, although you could still hear it doing something. The forums are not affiliated with Mack Trucks, Inc. an independent, full service Mack dealer. on my 98 CH both of the switches are in place. The "Wait to start" light still comes on but my volts never drop to around 9-10 like the heater is on. So I figured it was time to replace the blend door actuator. Wondering if this could be the blower motor. Truck started out not having heat, I removed the blend door actuator and it closed (by gravity), now I have heat! Now that temps are warming up in Wisconsin, I want a/c. com is a support forum for antique, classic and modern Mack Trucks! The forum is owned and maintained by Watt's Truck Center, Inc. there is another place for a switch but it does not have one. The system seems to operate ok as far as the pressures on the gauges look to me. had gauges on it and its fine. com Customer: 2017 mack cxu sleeper heat not working. 9 cdti 2007. What can be the problem for the inadequate heating? Is it there a problem with the thermostat and if yes, then w Feb 26, 2010 · My 2019 Anthem has a factory installed Wabasto heater that isn't working. Jan 14, 2016 · I have the bunk lines closed, but is there another valve that could be closed for the summer? Truck was fully warmed up, but still no heat. I've looked and the hoses are fine (nothing is blocking them), the valve is open, and the heating core is not clogged. removed the plastic piece and put fittings in still not getting hot. This is one complete panel and has to be replaced as one. The plastic broke where the actuator was mounted, so it was free to just flop around and not have a base to push/pull against to move the door. After doing so, it still doesn't move when selecting hot to cold. Jun 16, 2010 · i replaced the only switch on the system that i saw. If there is a low coolant level in the system, however, not only is there less heat in the heater core to be transferred to the cabin but there is also less coolant to absorb heat from the engine. View all 96 Heater/AC Control Assys including CXU613, CV713 Granite, Anthem, CHU613, and more. Jul 19, 2024 · I’ve replaced the blower fan, resistor, and control panel and still nothing! Any ideas on what else it could be? Check fuses up in top of dash, there should be a bigger square on for the blower motor then one for the control panel. It's a 2008 CXU613. As the Aug 25, 2013 · As for airflow problems, my experience has been that it usually is caused by plugged up heater core and a/c evaporator core. Seems like I have no power at the blower and/or resistor. There is power going to the high pressure side. I could move mirrors with button and when i press the button for heater Volvo/Mack Master Tech, Certified with Cummins, Eaton, GM Jun 25, 2013 · 1995 T600 ac blower kicks on, then like a relay kicks out. I have watched videos and read instructions on how to turn the heater on. 00. Pressures check fine. Fan not working on speed 1 2 3 but working 4 speed vauxhall vectra sri 1. High is usually direct straight from the switch. I just replaced mine at a cost of $196. You may need to rebuild or replace the clutch fan. Proper fix is to discharge the a/c and remove both the heater core and evaporator core and clean them thoroughly. Glass in both show resistance. Which lead to replacing both hoses the expansion valve, drier, I flushed out the system then added oil and charged. Usually the back of the switch is melted. The Mack ignition cutout circuit begins at the dash panel (passenger side, top). May 25, 2017 · BigMackTrucks. The Kenworth ignition circuit begins in the fuse panel, on the floor behind the brake pedal. Jan 29, 2011 · Not getting any heat in either mirror on my 2005 vn670. You can remove the switch and compare the wiring to the diagram to verify that. . Coolant flows through the heater core all the time . Do not use the truck’s ignition to turn off the air conditioner. 5. It has heated twice and then only for five minutes. Check for air leaks around the clutch fan. it screws into the dryer but only has two wires going to it. I swapped controllers from another truck but didn’t fix it. WisTreemover Posted 6/9/2017 18:10 (#6062436 - in reply to #6062242) Subject: RE: Mack truck AC question Jul 20, 2024 · The lower fan speeds go through the resistor. The AC didn't work but this year had a good guy working on the AC and he has it working. But the low pressure switch does Mar 31, 2010 · For some reason all of a sudden my intake heater is not working? Very hard to get the truck to start. Overloading the breaker/relay, then when it resets kick back on again? Not sure if these trucks have relays on the fan or not? Sorry for the delay. Jun 24, 2014 · So I had to replace a hose that rubbed a hole in it. Checked both pressure switches, both check good. Tried new switch, same thing. Aug 18, 2022 · The AC has been working fine till this week. Unless your circuit is different the “switch mirror defrost” switch should light when on regardless of mirror plugged in Customer: Mack truck blower fan works on 4th speed but not 1-3. I took the dash apart and found that absolutely everything under there was plastic. Jul 22, 2010 · I have (2) 2007 mack granite cv713 tri-axle dump trucks and I was having a problem with the fan switch and the lights on the heater air conditioner control panel on one truck. what are you taking about fan kicking in? the squirrel May 12, 2018 · Hi everyone, I have 05 Mack CXN613 and A/C quit working, after I check all fuses notice that APADS lights not coming on at all so I'm not sure how to check that component because green wire is powered when I turn A/C on is there something I'm missing, also I don't have fuse guide in my outer fusebox cover and not sure what fuse is for what, if Jul 13, 2023 · On the Mack sleeper HVAC. This is usually because the cabin air filter is clogged/dirty and the blower motor is trying to pull air through the dirty cabin air filter and it over heats the wires, switch and connector on the HVAC control panel. Nov 3, 2014 · If the clutch fan is staying on, that is probably why the heater is not putting out hot air. that's assuming everything else is operationally fine. Around 30/245 on a 90 degree day. Dec 1, 2012 · I got Mack 2006 cxn 613 Vision which heats the cabin very weakly. Is there a resistor or something I’m missing and if so could you please help me with a location. See full list on overdriveheavyduty. Freightliner and International trucks begin the ignition cutout circuit at the ignition key. actuator moves lines running to heater core are warm. 6. Dec 30, 2022 · The heat in your truck depends on the coolant carrying engine heat to the heater core, where the blower or fan moves it through the vents into the cabin. When I push the switch to turn on mirror heat the led in switch flashes but does not stay lit like it normally would when working properly. Oct 23, 2018 · I have a 2013 Mack CHU613 tractor with the ac blower only working on high. Thanks Mirror heater is not working. there is also wires that are meant for the switch but it has a factory cover on it. qwyfnkn pcpu tsdp tcz qqkd nupxzj ngvyu qrglq xaynda mukgfp gkntm gagme xlz ralmf bcgkh