TB-9-2320-279-13-1
TECHNICAL BULLETIN; AIR CONDITIONING SYSTEM
OPERATOR’S, UNIT AND DIRECT SUPPORT MAINTENANCE MANUAL, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LISTS
DECEMBER 2005
TB-9-2320-279-13-1 - Page 75 of 524
TB 9-2320-279-13-1
0011-7
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE IN ALL SPEEDS
(LOW, MEDIUM, AND HIGH) - Continued
DRAFT
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HEMAC130
VISUAL INSPECTION
(1) If OFF, turn engine start switch ON
(TM 9-2320-279-10).
(2) Turn fan control switch to high speed position
(WP 0004).
Verify AC heater/evaporator blower
operation.
(a) If AC heater/evaporator blower does not
operate when the fan control switch is in the
high speed position, go to Step 12 of this fault.
(b) If AC heater/evaporator blower operates when
the fan control switch is in the high speed
position, go to Step 5 of this fault.
VISUAL INSPECTION
(1) Turn fan control switch to medium speed position
(WP 0004).
Verify AC heater/evaporator blower
operation.
(a) If AC heater/evaporator blower does not
operate when the fan control switch is in the
medium speed position, go to Step 9 of this
fault.
(b) If AC heater/evaporator blower operates when
the fan control switch is in the medium speed
position, turn engine start switch OFF and go to
Step 6 of this fault.
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