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Page Title:
AIR CONDITIONER DOES NOT OPERATE - continued |
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 TM 10-3930-673-20-1
30. AIR CONDITIONER DOES NOT OPERATE (CONT).
5
KNOWN INFO
TEST OPTIONS
Green light extinguished.
Voltage Test.
Is voltage present at
Defrost fans OK.
STE/ICE-R #89.
thermostat where wire 81
Wire 80 OK.
REASON FOR QUESTION
Heater/air conditioner switch OK.
connects?
If voltage is not present, thermostat
Light green wire OK.
is faulty.
POSSIBLE PROBLEMS
Thermostat faulty.
Low pressure cut-off switch faulty.
Dark green wire faulty.
High pressure cut-off switch faulty.
Wire 81 faulty.
A/C compressor clutch faulty.
Replace thermostat
NO
(Para 17-12).
YES
KNOWN INFO
TEST OPTIONS
6
Green light extinguished.
Voltage Test.
Is voltage present at low
Defrost fans OK.
STE/ICE-R #89.
Wire 80 OK.
pressure cut-off switch where
REASON FOR QUESTION
Heater/air conditioner switch OK.
wire 81 connects?
If voltage is not present, wire 81 is
Light green wire OK.
faulty.
Thermostat OK.
POSSIBLE PROBLEMS
Low pressure cut-off switch faulty.
Dark green wire faulty.
High pressure cut-off switch faulty.
Wire 81 faulty.
A/C compressor clutch faulty.
Repair wire 81
NO
(Para 8-48).
YES
2-454
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