TM 9-2350-247-10
TROUBLESHOOTING TABLE—Continued
0056 00
INITIAL SETUP:
Maintenance Level
Operator
VEHICLE COMPARTMENT HEATER KIT
NOTE
A vehicle compartment heater kit is optional in the M548A1 carriers. M548A3 carriers have a
vehicle compartment heater installed.
Table 15. Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. HEATER DOES NOT START
WITH THE RUN-OFF-START
SWITCH HELD IN START
POSITION.
1. Check if MASTER SWITCH is
OFF.
Turn MASTER SWITCH ON.
2. Defective heater.
Notify unit maintenance.
2. HEATER OVERHEATS AND
STOPS.
1. Check if the heater air intake,
exhaust pipe or warm air outlet is
blocked.
Find and remove whatever is blocking
the heater system.
3. HEATER OVERHEATS AND
DOESN’T STOP.
1. The heater is no good.
Turn the heater OFF and don’t use it
until unit maintenance fixes it.
4. HEATER DOES NOT PUT OUT
ENOUGH HEAT.
1. Check if HI-LO switch is in LO
position.
Move HI-LO switch to HI position
(WP 0031 00).
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