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Page Title:
Table 1. Heating Systems Troubleshooting Procedures - continued |
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 TM 9-2320-361-24-1
0015 00
HEATING SYSTEMS TROUBLESHOOTING (Contd)
Table 1. Heating Systems Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test 1. Check horn operation.
1. If horn is operational, voltage is
3. PERSONNEL FUEL
Push horn button.
present at input of personnel
BURNING HEATER
heater circuit breaker, go to test 2.
INOPERATIVE
2. If horn fails to operate, go to
WP 0014 00, table 1,
malfunction 10.
Test 2. Test lead 10 for power input to
heater control box.
1. Set multimeter to a range
that will measure 24 VDC.
2. Disconnect lead 10 from
heater control box.
3. Touch multimeter positive
lead to contact end of lead 10.
4. Touch negative lead of
1. If voltage is present, go to test 3.
multimeter to frame ground.
2. If voltage is not present, repair or
Voltage should be present.
replace lead 10 (WP 0090 00).
Test 3. Check heater control box for
power output.
1. Set multimeter to a range
that will measure 24 VDC.
2. Disconnect harness connector
from rear of control box.
3. Set heater control switch to
start and hold.
4. Set heater control heat switch
to high.
5. Touch positive lead of
multimeter to pin A on rear of
control box.
6. Touch negative lead of
multimeter to frame ground.
7. Repeat steps 4 and 5 for pins
1. If voltage is present at all pins
B, C, and D. Voltage should be
tested, go to test 4.
present.
2. If voltage is not present at one or
more pins, replace heater control
box (WP 0352 00).
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