- Inspect indoor coil
- Blower motor-measure amperage and voltage for proper operation
- Thermostat-test for proper operation, calibrate and level
- Refrigerant-monitor operating pressures
- Inspect condenser coil
- Inspect condensate drain
- Bearing- inspect for wear and tear and lubricate
- Safety devices- inspect for prior operation
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- Electrical wiring-inspect for safety
- Electrical disconnect box- inspect for wiring connections & overheating
- Inspect and capacitors
- Test/inspect contactors
- Inspect service valves for proper operation
- Inspect fan blade
- Monitor and measure and draw voltage of compressor
- Measure supply/return temperature differential
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- Check equipment sub-cooling and superheat
- HEAT PUMPS:
- Check operation of heat strips
- Check proper operation of the reversing valve
- Confirm operation of solenoid
- Test defrost sensor
- Test operation of defrost board and adjust I needed
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