RV blower motor.


  #1  
Old 08-14-14, 06:11 PM
Jarredsdad's Avatar
Member
Thread Starter
Join Date: Oct 2002
Location: Troy, VA
Posts: 1,527
Received 0 Votes on 0 Posts
RV blower motor.

94 Holiday Rambler. Blower has 2 leads. Resistors in the circuit. Voltage to the motor is 11.6 (engine off) and blower doesn't run. Ohm out the motor windings and I get 156K. Seems cooked to me.

I'm commercial HVAC (AC power) and 156K is excessive to me for motor windings. Bad motor?
 
  #2  
Old 08-14-14, 06:57 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 61,837
Received 1,475 Votes on 1,363 Posts
Did you actually take the motor apart to get to the windings are are you checking the 12v power connection ?

Those motors are brush type motors and usually the brushes wear out causing the motor to stop.
 
  #3  
Old 08-15-14, 01:53 PM
Jarredsdad's Avatar
Member
Thread Starter
Join Date: Oct 2002
Location: Troy, VA
Posts: 1,527
Received 0 Votes on 0 Posts
Slowly checking done the line. Did replace the blower relay and pigtail due to a broken connection. Checked the resisters in the hot/cold deck. Checked the speed switch, seemed OK. Finally checked pos and neg at the motor and had 11.9 volts. Removed neg and ohmed out to 156K which to me is super high.

Daughter and Son in laws camper. I told him to work on getting motor and wheel out today so I can hold it in my hand to check further.

Having a reading of 12 volts at the motor and no spinning rotor mean dead motor.
 
  #4  
Old 08-15-14, 10:33 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 61,837
Received 1,475 Votes on 1,363 Posts
Having a reading of 12 volts at the motor and no spinning rotor mean dead motor.
I would agree. Like I mentioned previously..... probably worn out brushes.
 
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: