Goodman-Amana-Daikin · Furnace · Cooling

Low and second stage cooling with the furnace blower

Two-stage 96 percent (integrated 7-segment control)

What happens, in order

  1. Thermostat closes Y/Y1 (and G) for low stage, or Y2 for second stage
  2. Display shows 1AC or 2AC for the cool stage
  3. Compressor and condenser fan start
  4. Circulator blower starts at the cool speed after the cool on delay; electronic air cleaner is energized with it
  5. Thermostat satisfied compressor stops and the cool fan off delay begins
  6. When the off delay ends the circulator and air cleaner relay drop out

Applies to: Goodman GC9C96 / GM9C96 / AC9C96 / AM9C96; Daikin DR96TN / DD96TN; Goodman GM9S96 family

Models

GM9C96GC9C96AM9C96AC9C96DR96TNDD96TNGM9S96GC9S96AM9S96AC9S96

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Source: Goodman GM9C96 service RS6612020r1, Cooling Mode Sequence of Operation; Daikin DR96TN service RSD6612304; Goodman GM9S96 service RS6612022r1. Written in our own words; timings can differ by model and software version, so check the manual for your exact unit.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.