TB 9-2320-360-13&P-1
A/C DOES NOT OPERATE
9.
WARNING
KNOWN INFO
Read WARNING on
Power to A/C system OK.
page 0042 00-15.
A/C circuit wiring OK.
A/C controls OK (except for A/C
Does A/C test set recovery/
binary switch and A/C
recycling manifold gages
thermostatic switch).
indicate high system low side
A/C receiver/dryer moisture
TEST OPTIONS
pressure?
indicator indicates no moisture in
Pressure Test.
system.
A/C Test Set Manifold Gage.
A/C binary switch OK.
A/C receiver/dryer sight glass
REASON FOR QUESTION
indicates no desiccant
To isolate system fault.
breakdown or oil in system.
A/C system is not leaking.
A/C system charge is not low.
A/C thermostatic switch OK.
Go to Step 16 of
No air or other contaminant in A/C
NO
this fault.
system.
POSSIBLE PROBLEMS
YES
A/C compressor faulty.
Restricted A/C hose.
A/C engine fan control circuit
faulty.
A/C condenser faulty.
A/C expansion valve faulty.
A/C system overcharged.
A/C receiver/dryer faulty.
A/C evaporator faulty.
KNOWN INFO
TEST OPTIONS
10.
WARNING
Read WARNING on
Power to A/C system OK.
Pressure Test.
page 0042 00-15.
A/C circuit wiring OK.
A/C Test Set Manifold Gage.
A/C control OK (except for A/C
REASON FOR QUESTION
Does A/C test set recovery/
binary switch and A/C
To isolate system fault.
recycling manifold gages
thermostatic switch).
A/C receiver/dryer moisture
indicate high system high
indicator indicates no moisture in
side pressure?
system.
A/C binary switch OK.
A/C receiver/dryer sight glass
indicates no desiccant
breakdown or oil in system.
A/C system is not leaking.
A/C system charge is not low.
A/C thermostatic switch OK.
Go to Step 14 of
No air or other contaminant in A/C
NO
this fault.
system.
A/C receiver/dryer OK.
A/C evaporator OK.
YES
POSSIBLE PROBLEMS
A/C compressor faulty.
Restricted A/C hose.
A/C engine fan control circuit
faulty.
A/C condenser faulty.
A/C expansion valve faulty.
A/C system overcharged.
0042 00-14
