Daewoo MATIZ Service Manual page 767

Step
14 Is the noise present in the vent mode only?
1. Check the ducts for obstructions or foreign
materials.
2. Remove any obstructions or foreign materials.
15
3. Check the vent door seals.
4. Repair or replace as needed.
Is the repair complete?
Is the noise present in all modes, but not all temper-
16
ature positions?
1. Check the temperature door seals.
17 2. Repair or replace, as needed.
Is the repair complete?
1. Check the system for obstructions or foreign
materials between the fan and the temperature
door.
18
2. Repair or replace, as needed.
Is the repair complete?
DAEWOO M-150 BL2
Blower Noise (Cont'd)
Action
HEATING AND VENTILATION SYSTEM 7A – 17
Value(s)
–
–
–
–
–
Yes No
Go to Step 15 Go to Step 16
–
System OK
Go to Step 17 Go to Step 18
–
System OK
System OK Go to Step 2