Why is my heater blower fan not working?
Why is my heater blower fan not working?
Assuming all your fuses are good, either the blower motor is toast or the blower motor regulator has gone. There is a nice R/R link for the blower motor in the DIY section. The regulator lives under the blower motor. Your OVP has no play in the blower motor operation. Click to expand… Can anyone direct me to links for more information?
What to do when your HVAC fan won’t work?
Since the blower works for heat, you might try putting the wire that’s on the HEAT terminal on the COOL terminal. If the blower fires up, you know it’s a problem with the motor. WARNING: Don’t run the system this way for long, you’re just checking to see if the blower starts.
What to do if your heater motor won’t work?
Options for repairing it yourself and saving big $$$. If your heater motor won’t come on, first check your fuse or relay. If you are not sure if the switches are the problem, we recommend you get the covers off and power the motor directly with a 12 volt power source.
How does a thermostat turn on a blower fan?
If the W terminal is energized, it turns on the heat and the fan at the furnace. If the Y terminal is energized, it turns on the a/c outside unit, but not the blower fan. Typical thermostats will energize the G terminal when in cool mode, or when the fan is turned to manual “always on” mode.
What should I do if my blower wont shut off?
If the blower stops with either of these steps, the problem is in the HVAC control module. However, if the blower continues to run at high speed with either of those tests, replace the blower motor control processor. Just as an FYI, the retail price of the blower motor control processor is $280.34.
Why does my furnace blower fan keep running?
Still the fan stays on. When the power (bulk wire) is disconnected and reconnected the inducer motor comes on but goes off after a few seconds but the blower motor stays on. Circuit board still indicates open fan limit switch but it’s good.
What to do when your AC Fan is not working?
Checked for incoming resistance ground to the blower, from the dash control switch and it works. Checked for battery at the blower, when the car is running. There is no battery to operate the blower. Rotated all the PDC relays around, they have the same ID, other than ABS pump.
What to do if your heater won’t stop running?
To fix the problem, replace the blower motor control module. Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period. They include wiring diagrams and technical service bulletins. In most cases, their diagrams are right from the factory manuals. Which one should YOU choose?
Why is my Mercedes Benz heater not working?
Its too cold now to use the car without heat. Assuming all your fuses are good, either the blower motor is toast or the blower motor regulator has gone. There is a nice R/R link for the blower motor in the DIY section. The regulator lives under the blower motor. Your OVP has no play in the blower motor operation.
Is the 10 Amp Fuse on my heater fan burned out?
The 10 amp fuse was not burned out. The blower motor resistor was a little rusty.I inspected and found no burned or melted wires anywhere , at the inside three way dash switch , at the blower motor and at the resistor.I know the air bag is tied into the same fuse , I must have replaced the fuse 12 times .
Where is the regulator on a Mercedes fan blower?
The Mercedes Benz fan blower motor regulator is a series of resisters in a printed circuit board about 2-inches square located right next to the blower motor.
Assuming all your fuses are good, either the blower motor is toast or the blower motor regulator has gone. There is a nice R/R link for the blower motor in the DIY section. The regulator lives under the blower motor. Your OVP has no play in the blower motor operation. Click to expand… Can anyone direct me to links for more information?
Its too cold now to use the car without heat. Assuming all your fuses are good, either the blower motor is toast or the blower motor regulator has gone. There is a nice R/R link for the blower motor in the DIY section. The regulator lives under the blower motor. Your OVP has no play in the blower motor operation.
Is the fuse on the blower motor okay?
The blower motor fuse is fine (the one on the driver side shock tower, right?). This blower motor problem has been discussed quite a few times, and you should be able to find solutions by searching these discussions. Look in the “stickies” at the top of the forum, DIY repairs. :nerd
Why does my Mercedes Benz blower stop working?
Im from Malaysia… i just want to ask why my blower stop working after i charge the gas in the system. like it suddenly stop. is it because its a burden to the blower? and..the compressor didnt stop eventhough i released all the gas. maybe there’s problem at the controller. but whats the reason this happen? sorry my english kinda suck. Hi.
Where does the wiring come out of a blower motor?
Look at where the wiring comes out of the top of the box where the blower motor is located. They come out on the left/driver’s side. Follow them to a terminal block located on the firewall near the power brake vacuum booster. One should be ground/earth. One should have +12V.
Where is the blower motor on a Mercedes?
Look at where the wiring comes out of the top of the box where the blower motor is located. They come out on the left/driver’s side. Follow them to a terminal block located on the firewall near the power brake vacuum booster. One should be ground/earth.
