Volvo RWD 900 Forum

INDEX FOR 1/2026(CURRENT) INDEX FOR 5/2002 900 INDEX

[<<]  [>>]


 VIEW    REPLY TO THIS MESSAGE    PRINT   SAVE 

problem solved 900

Hello everyone,

I have found it! The blend door was shut and the motor pointed out by Amarin did not work, but it was not in fault itself. The problem was the connection at the blower resistor. As you can see on the diagram in green book HVAC control unit 4/40 A operates blend door motor 6/27, but it is grounded trough resistor. The blower motor is grounded independently. In my case the blower was running like it should but the HVAC unit did not receive ground therefore blend door motor was not responding to cold/heat knob.






THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD

New No heating - water pump? [900]
posted by  someone claiming to be RobertD  on Wed Jan 14 15:45 CST 2015 >


<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.