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Page Title:
Table 4-2. Organizational Troubleshooting-Continued. |
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 TM 5-4120-386-14
Table 4-2. Organizational Troubleshooting- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. COMPRESSOR WILL NOT START-Continued
Step 5. Observe operation of time delay relay.
R e p l a c e badrelay. (Refer toparagraph 4-25.)
5 INSUFFICIENT HEATING
Step 1.
Check that mode selector switch is in HIGH HEAT position.
Switch to HIGH HEAT position.
Replace bad mode selector Switch.
(Refer to paragraph 4-24.)
Step 2. Check that evaporator fan toggle switch is in HIGH SPEED position.
Switch to HIGH SPEED position.
Replace bad evaporator fan speed switch,
(Refer to paragraph 4-24.)
Step 3. Check that temperature selector switch is in WARMER position.
Switch to WARMER position.
Replace bad temperature selector switch.
(Refer to paragraph 4-24.)
Step 4. Check that the compressor circuit breaker is in the ON position.
Switch to ON position.
Replace bad compressor circuit breaker.
(Refer to paragraph 4-24.)
Step 5. Check that control circuit breaker is in the ON position.
Switch to ON position.
Replace bad compressor circuit breaker.
(Refer to paragraph 4-24.)
Step 6. Observe that six heating elements are energized and operating in HIGH
HEAT by using an ammeter to measure amperage draw of air
conditioner. Amperage draw in HIGH HEAT mode should be 18-20
amps, all heaters are not working.
4-17
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