TM 9-2320-260-10
Table 3-1. Troubleshooting (Cont’d)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
42. CEILING LIGHTS AND SERVICE RECEPTACLES FAIL TO ENERGIZE WHEN DOORS ARE
CLOSED UNDER BLACKOUT CONDITIONS.
Step 1.
Check to see if blackout circuit switch and/or main circuit breaker switches are turned off.
(Refer to paragraph 2-29i.)
Turn on switches.
Step 2.
Check to see if blackout switch is turned off. (Refer to paragraph 2-29i.)
Turn on blackout switch.
Step 3.
Check outside power cable for secure connections if electrical power is supplied from
outside source.
Connect power cable securely to power entrance receptacle and power source.
43. EMERGENCY LIGHT, BLACKOUT LIGHT, AND CEILING LIGHTS FAIL TO ILLUMINATE.
Step 1.
Check to see if main circuit breaker and/or light switches are turned off.
Turn on main circuit breaker or light switches.
Step 2.
Check outside power cable for secure connections if electrical power is supplied from
outside source.
Connect power cable securely to power entrance receptacle and power source.
44. VAN HEATER WILL NOT IGNITE
Step 1.
Check to see if main circuit breaker and/or heater switches are turned off. (Refer to
paragraph 2-29g.)
Turn on main circuit breaker or heater switches.
Step 2.
Check to see if thermostat is set to desired temperature.
If not, set thermostat to desired temperature.
Step 3.
Check for closed fuel pump shutoff valve (refer to paragraph 2-29g).
If closed, open shutoff valve.
Step 4.
Check fuel level on fuel gage.
Fill fuel tank as necessary.
Step 5.
For electrically powered right heater only, check outside power cable for secure
connections if electrical power is supplied from outside source.
Connect power cable securely to power entrance receptacle and power source.
45. HEATER STOPS OPERATING.
Check fuel level.
Add fuel to truck fuel tank, as required.
46. AIR CONDITIONER COMPRESSOR FAILS TO START.
Step 1.
Check to see if bonnet door is closed. (Refer to paragraph 2-29h.)
Push bonnet door control rod forward to open bonnet door.
Step 2.
Check to see if main circuit breaker and/or air conditioner switches in circuit breaker box
are turned off.
Turn on main circuit breaker or air conditioner switches.
Step 3.
Check to see if power input switch and/or compressor circuit breaker are turned off.
Turn on power input switch or compressor circuit breaker.
Step 4.
Check to see if compressor switch is turned to HIGH when starting air conditioner.
If not, turn compressor switch to HIGH when starting air conditioner.
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