TM 9-2320-387-24-l
INSTRUMENTS Cli?C;i
,&s>
KNOWN INFO
~Sf .,o~sDIAGNOSllC
FLOWCHART
I
1
ELECTRICAL
GAUGES OK
POSSIBLE
PROBLEMS
AIR RESTRICTION
GAUGt
VACUUM LINE
KNOWN lNF0
AIR RESTRlCTlON
GAUGE
OK
VACUUM LINE OK
POSSIBLE
PROBLEMS
HEATER FAN MOTOR
WIRING
HEATER FAN SWmCH
ClRCUlT BREAKER 1
DOES THE AIR FILTER
RESTRICTION GAUGE WORK?
WITH THE ROTARY SWITCH IN
THE RUN POSITION, DOES THE
HEATER FAN WORK?
OPTIONS
VISUAL
REASON FOR QlJESllON
/
The heater fan should wok with
therotaryswitchintheRUN
&@_(c&
-On.
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