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TM 5-4120-274-15
(3) Inspect filter for dirt.
(3) Spray with light coat of cd.
(4) Reinstall air filter into unit
b. Service.
(1) Wash filter in hot water or approved
solution.
Refer to figure 3-4 and 3-5 to inspect panels,
grilles, and screens.
(2) Dry with compressed air.
Section V. TROUBLESHOOTING
Probable remedy
Probable cause
3-11. General
Push reset button to reset
Contacts of high presure
This section provides information useful in diag-
cutout switch (fig. 3-13) .
cutout switch or low
nosing and correcting unsatisfactory operation or
pressure open
failure of the air conditioner and its components.
Easy trouble symptom stated is followed by a list
3-13. Compressor Starts but Goes Out on
of probable cauaes. The possible remedy is de-
Overload
scribed opposite the probable cause. Any trouble
Probable remedy
Probable cause
beyond the scope of organizational maintenance
Condenser fan not operat- Check motor leads and power
shall be reported to direct support maintenance.
line running to motor
ing
Condenser coil blocked ---Clean condenser coil (para
Probable cause
Probable remedy
3-14. Little or no Heating Capacity
Selector switch improperly Set switch to COOL position.
set
Probable remedy
Probable cause
Circuit breaker contracts
Reset circuit breaker (fig.
Selector switch improperly Set switch to proper setting
2-2).
set
open
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