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TM5-4120-376-14
Table 4-2. ORGANIZATIONAL MAINTENANCE TROUBLESHOOTING (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. INSUFFICIENT HEATING (LOW HEAT)
Step 1.
Check to see if mode selector switch (1) is in LOW HEAT position.
Place mode selector switch in LOW HEAT position.
If the air conditioner will not operate, check for a defective mode selector switch
in accordance with paragraph 4-22, page 4-101.
Replace defective mode selector switch in accordance with paragraph 4-22, page
4-104.
Step 2.
Check to see if control circuit breaker (2) is in the ON position.
Place control circuit breaker in the ON position.
If the air conditioner will not operate in the LOW HEAT mode position, check for a
defective control circuit breaker in accordance with paragraph 4-22, page 4-100.
Replace defective control circuit breaker in accordance with paragraph 4-22, page
4-105.
Step 3.
Check to see if temperature
selector (3) is in the WARMER
position.
Place temperature selector in the
WARMER position.
Replace defective temperature se-
lector in accordance with para-
graph 4-22, page 4-104.
Step 4.
Check to see if compressor
circuit breaker (4) is in the
ON position.
Place compressor circuit breaker
in the ON position.
If the air conditioner will not
operate, in the COOL position
check for defective compressor
circuit breaker in accordance with
paragraph 4-22, page 4-100.
Replace defective compressor
circuit breaker in accordance with
paragraph 4-22, page 4-105.
4-22
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