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1. Check air filter
2. Check belt tension and condition
3. Check vanes of blower for dirt build up
4. Lubricate motors and bearings
5. Check and set air bypass dampers
6. Shut down humidifier (if applicable)
7. Check condensate line
8. Check thermostats
9. Check condenser coil
10. Check contactor contacts for burning
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11. Tighten all 220V screw down terminals
12. Check capacitors for swelling leakage
13. Check condition of wiring
14. Lubricate fan motor
15. Inspect cabinet for signs of oil or Freon leaks
16. Check disconnect for fuses and condition of same
17. Check amp draw of compressor and fan motor
18. Check temperature drop across condenser
19. Check temperature drop across evaporator
20. Check Freon level if needed
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