 |
|||
|
|
|||
|
Page Title:
AC DOES NOT COOL OR COOLS INADEQUATELY - Continued |
|
||
| ||||||||||
|
|
 DRAFT
TB 9-2320-279-13-1
AC DOES NOT COOL OR COOLS INADEQUATELY - Continued
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
WARNING
16.
KNOWN INFO
Read WARNING on
Power to AC system OK.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
AC heater/evaporator blower OK.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
AC control circuits OK (except for
Does AC test set recovery/
temperature control and low pressure
recycling manifold gages
switches).
TEST OPTIONS
No moisture in AC refrigerant system.
indicate high system high-
Pressure test.
AC low pressure switch OK.
side pressure?
No AC condenser dryer desiccant
AC test set manifold gage.
contaminant in AC refrigerant system.
REASON FOR QUESTION
No AC refrigerant oil contaminant in AC
refrigerant system.
To isolate system fault.
AC system charge is not low.
No AC system leaks.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Temperature control switch OK.
Go to Step 19 of this
NO
fault.
No air or other contaminant in AC refrigerant
system.
AC compressor OK.
YES
AC condenser core OK.
AC system not overcharged.
POSSIBLE PROBLEMS
Restricted AC hose.
AC expansion valve faulty.
AC condenser dryer faulty.
AC evaporator core faulty.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
WARNING
17.
KNOWN INFO
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Read WARNING on
TEST OPTIONS
Power to AC system OK.
AC heater/evaporator blower OK.
Visual inspection.
AC control circuits OK (except for
REASON FOR QUESTION
temperature control and low pressure
Are AC hoses from AC
switches).
If frost or cool spots are
compressor output to AC
No moisture in AC refrigerant system.
forming on AC hoses, AC
expansion valve free from
AC low pressure switch OK.
hoses are restricting
R-134a refrigerant flow.
No AC condenser dryer desiccant
frost and cool spots?
contaminant in AC refrigerant system.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
No AC refrigerant oil contaminant in AC
refrigerant system.
AC system charge is not low.
Recover R-134a
No AC system leaks.
refrigerant (WP 0050).
Temperature control switch OK.
Replace restricted AC
No air or other contaminant in AC refrigerant
hose (WP 0040) and
NO
system.
AC condenser dryer
AC compressor OK.
(WP 0025). Evacuate
and charge system
AC condenser core OK.
YES
(WP 0050). Verify
AC system not overcharged.
repair, go to Step 22 of
AC evaporator core OK.
this fault.
POSSIBLE PROBLEMS
Restricted AC hose.
AC expansion valve faulty.
AC condenser dryer faulty.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
0015-24
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals