TM 10-5410-228-24
Section V. UNIT LEVEL TROUBLESHOOTING PROCEDURES
2.8
GENERAL.
The following section lists common equipment malfunctions and contains instructions to allow unit
personnel to diagnose and correct each malfunction. Perform the indicated steps in the order listed. An index
is provided to assist you in finding the troubleshooting instructions as quickly as possible. This section does
not list all possible malfunctions. If a malfunction is either not listed or cannot be corrected by the prescribed
procedure, notify your supervisor.
No.
Malfunction
Page
1.
No Power To System With ECV Running No Air, No Lights, No Readings On Converter.
2.
No Readings On Inverter Mission Profile (Mobile/Static) Indicator And LMS Lights On.
3.
Inverter Indicator Lights On.
4.
EPG Failures.
4.1
ECV Engine Idle Speed Does Not Change (EPG System Inoperative) When EPG Is
Engaged, Internal Power Only.
4.2
Actuator Goes Full Stroke When DC Power Is Turned On (Engine Is Not Operating).
4.3
Erratic Governor Operation.
4.4
Fast Oscillation Of Governor Linkage.
4.5
Slow, Small Amplitude Hunting Of Speed Or Frequency.
5.
No Air Flow When Mission Profile Switch Is Set For Static Mode `Static' Indicator Off And 2-26
ESS Mode Switch On Vent, Cool, or Heat, Internal Mode.
6.
No Air Flow When Mission Profile Switch Is Set For Static Mode Internal Power `Static' 2-31
Indicator On.
7.
No Air Flow When Mission Profile Switch Is Set For Static Mode External Power `Static' 2-34
Indicator On, NBC Switch Off.
8.
NBC Fan `Pressure Low' Indicator Does Not Come On And Audible Alarm Does Not Sound 2-39
When NBC Fan Switch Is First Turned On Mute Switch Off, `NBC Fan On' Indicator On.
9.
NBC Shelter Pressure Gage Does Not Respond (No Reading) With The NBC Fan Operating 2-43
NBC Fan `Pressure Low' Alarm Stays On.
10.
Air Beams Do Not Inflate When `Rib Fan' Switch Is Pressed (No Rib Air Flow) `Rib Fan'
Indicator On.
11.
Rib Fan Does Not Turn Off When Rib Pressure Reaches Or Passes The High Set Point Of
The Gage.
12.
Rib Pressure Gage Does Not Respond (No Reading) With The Rib Fan Operating.
13.
No AC Power To Peripheral Outlets J1 Through J4 On Rear Of LMS With ECV Running 2-51
Inverter On, Readings Normal.
14.
No Power To System With `EXT' Power Applied.
15.
Converter Indicator Lights On.
16.
Switch/Indicator Dim.
17.
Hydraulic Fluid Alarm `Danger Level' Switch/Indicator Lights, `Check Oil' Indicator
Remains Off.
18.
No Cool Air Flow (Static Mode, Internal Power) No High Or Low Pressure Alarm.
19.
Low Or Fluctuating Air Flow In Static Mode With Internal Power Or External Power, NBC 2-67
Off.
20.
No Cool Air When Operating In Mobile Mode `Mobile' Indicator On.
21.
No Hot Air With Internal (ECV) Power `Hyd Oil Temp' Alarm Off.
22.
No Hot Air When Operating With `EXT' (10 kW TQG) Power.
23.
Unable To Over-pressurize The ABS Enclosure, Internal Power, Static Position.
24.
Unable To Over-pressurize The ABS Enclosure, External Power, Static Position.
25.
No Air Flow When Mission Profile Switch Is Set for Mobile Mode, `Mobile' Indicator Off,
And ESS Mode Switch On, Internal Power Mode.
26.
No Air When ESS Control Module Is Set To The Vent Mode, Mobile Mode, Internal Power. 2-92
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