TM-9-2320-280-10 HMMWV Operator Manual Download
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TM 9-2320-280-10 Table 3-1. Troubleshooting (Cont'd) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 30. POOR HEATING, VENTILATING, OR AIR-CONDITIONING PERFORMANCE Step 1. Ensure that operating controls are properly set. Set operating controls (para. 2-61). Step 2. Inspect HVAC filters for excessive dust, dirt, or debris. Service HVAC filters (para. 3-28). Step 3. Inspect HVAC fuses for a blown or missing fuse. Notify unit maintenance. Replace fuse (para. 2-61). Step 4. Other causes. Notify unit maintenance. 3-9