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Heater fan stopped working

Automatic AC and heater fan stooped working after two days of intermittent problems. Control indicator lights for fan and temperature adjustment also stopped working. Automatic temperature and defroster lights work.

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: heater control wont heat. AC and fan works fine

The heater core was plugged and took 8 flushes to clean it . Would clean it would stop again. Have heat now .
Thank you everyone for helping.

Posted on Sep 20, 2008

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  • 100 Answers

SOURCE: Heater control and windshield defroster temperature problems

It more and likely is the servo motor (s) that are the problem, when you turn hot to cold and defrost they cycle the vents in conjuction and are a common failure on this model.
The ones that fail are accessible if you remove the right underscuttle panel and the glovebox.
Black motors with a double wire, usually have a red connector on the end.
JPTCAT

Posted on Sep 22, 2008

peterrance19
  • 399 Answers

SOURCE: My heater.defrost/ac suddenly stopped working.

check the fuse

Posted on Nov 13, 2009

  • 347 Answers

SOURCE: 1990 Camry Fuse Diagram. The following suddenly

REPLACE BUSTED FUSES

Posted on Jan 01, 2010

  • 73 Answers

SOURCE: No day lights/ no heater/ac fan

Ignition switch doesn't sound right, instead try locating relay,that would be the first thing that I would check.Hope I could help.

Posted on Jan 04, 2010

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Heater ac fan won't blow 05 silverado. Started truck on cold day fan was blowing and turned it off waiting for truck to warm up and heater would not come back on. Checked all the fuses, all were good. Fan...


Test the electrical circuits ! Manual HVAC or automatic HVAC ?
Do you know the difference ? Heater / A/C blower motor electrical control diffrent . Manual has resistors an a relay for different speeds , automatic has a blower motor control module .Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info year , make , model and engine size . Under system click on HVAC ,then under subsystem HVAC controls will pop up . Click the search button , then the blue links . First off you need to know what system yours has , manual or automatic.
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The blower and temperature controls are independent if you have the manual system but they are integrated in the control head for the automatic version. The automatic version does not include a set of resistors. Do you know which system you have? If you have manual controls, I recommend you test the resistor with an ohmmeter. It's possible that your blend door actuator and resistor have failed independently. However, if you have the automatic system, your theory is as good as any. By the way, your wiring diagrams are available on autozone.com--they include both manual and automatic system schematics.

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FUSE BOX DETAILS


left to right...
1. empty
2. e flashers
3.horn, brake lights
4.clock, trunk light, inside light, radio
5. rad. cooling fan relay (AC only)
6. right side running lights
7. left side running lights
8. right high beam and indicator
9. left high beam and indicator
10. right low beam
11. left low beam
12. reverse,turn signal and inst panel
13. main and transfer fuel pumps, auxiliary air reg., ox sensor heater
14. license plate and glove box light
15. wipers
16. rear defogger
17. heater blower (no AC)
18. cig lighter
19. rad cooling fan (no AC)
20. Heater blower (AC)
21. rad cooling fan (AC only)
22. empty
23. Ox sensor, idle stabilizer,seat belt warning relay, (Digifant only, control unit, idle boost control, idle boost valve)
24. inst panel lights, heater control lights
25. reading lamps
26. empty
27. empty
28. empty

Hope this helps...;-)

Apr 17, 2009 | 1992 Volkswagen Fox

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