Skymark · Air conditioner · Cooling

Cooling cycle

RGACSGAC

What happens, in order

  1. Thermostat calls for cooling (R to Y on the fan timer control module)
  2. Compressor and condenser fan start immediately
  3. Circulating fan starts after a 4 second delay
  4. Thermostat is satisfied Y de-energizes and compressor and condenser fan stop immediately
  5. Circulating fan runs on for 100 seconds

Timings and thresholds

ItemValue
Circulating fan on delay4 s
Circulating fan off delay100 s (not adjustable)

Applies to: Skymark RGAC / SGAC self-contained gas heat / electric cool wall units

Models

RGACSGAC

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Source: Skymark RGAC/SGAC installation and operation instructions FORM 145.24-IOM1, 17 Sequence of operation. 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.