Colorado Comfort Air

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  • Heating
  • Cooling
  • Air Duct Cleaning
  • Troubleshooting
    • DISCHARGE PRESSURE
      • Fluctuating Discharge Pressure
      • High Discharge Pressure
      • Low Discharge Pressure
    • HIGH SUPERHEAT (evaporator outlet)
      • Measuring and Adjusting Operating Superheat
      • Cap Tube or TEV Distributor Restricted
      • Excessive Load on Evaporator Above Design Conditions
      • Flash Gas in the Liquid Line
      • Gas-Charged TEV (MOP)
      • Improper Piping Design
      • Inadequate Subcooling
      • Internally Equalized TEV
      • Liquid Line Restriction
      • Low Head Pressure
      • Power Element Failure or Loss of Charge
      • Superheat Adjustment Too High
      • System Contamination
      • Undersized TEV  
    • LOW SUPERHEAT (evaporator outlet)
      • Cold Suction Line/Compressor Location – Liquid Migration to Low Side During Off Cycle
      • Compressor Oversized
      • Cracked Diaphragm or Bellows- Automatic Expansion Valve
      • Evaporator Fan Blades On or Running Backwards
      • Excessive Accumulation of Oil in Evaporator
      • Excessive Coil Frosting
      • Excessive Subcooling
      • External Equalizer Line Plugged or Capped
      • Faulty TEV or Wrong Charge in Sensing Bulb
      • Interrupted Pumpdown
      • Long, Free Draining Suction Line to Compressor
      • Overcharge of Refrigerant and/or Oil
      • Oversized Condenser
      • Oversized TEV
      • Poor Bulb and Equalizer Location
      • Poor Distribution Through Evaporator Circuits
      • System Contamination
      • TEV Seat/Liquid Line Solenoid Seat/Compressor Discharge Valve Leaks During Off Cycle
      • TEV Superheat Setting Too low
    • SUCTION PRESSURE
      • Fluctuating Suction Pressure
      • High Suction Pressure- High Superheat (evaporator outlet)
      • High Suction Pressure- Low Superheat (evaporator outlet)
      • Low Suction Pressure- High Superheat (evaporator outlet)
    • MISCELLANEOUS
      • Compressor Starts, but Motor Cycles Off on Overload Protector
      • Faulty Controls
      • High Amperage Draw
      • Loss of Oil, Oil Pressure, or Oil Pressure Control Trip Out
      • Unit Runs Continuously- Adequately Sized, Inadequate Cooling
      • Unit Starts, but Short-cycle
      • Unit Will Not Start
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MISCELLANEOUS

MISC

Faulty Controls

High Amperage Draw

Loss of Oil, Oil Pressure, or Oil Pressure Control Trip Out

Unit Runs Continuously- Adequately Sized, Inadequate Cooling

Unit Will Not Start

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