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Geothermal Heat Pump Issues: Some Common Concerns

Posted on: June 5th, 2013 by

Geothermal Heat Pump Issues: Some Common ConcernsGeothermal heat pumps are well known for their efficiency and reliability, but like any mechanical system, they can develop problems that affect performance. Here are some common issues that you may experience with your geothermal system, along with possible causes and solutions.

General troubleshooting
Most troubleshooting and repair for a geothermal system should be performed by a qualified and trained professional. However, there are general checks you can perform that may help pinpoint the problem.

  • Check the air filter and coils. A dirty air filter or coil will interfere with the airflow the system needs to operate and can affect required head pressures. Change the filter or clean the coils to see if that helps.
  • Make sure the unit is plugged in and receiving electrical power.
  • Check for tripped circuit breakers on the unit or at the main breaker panel and reset tripped breakers.
  • Make sure the thermostat is set at an appropriate temperature and that the heat pump itself is set to the correct mode for heating or cooling.
  • Make sure there is water circulating through the system’s heat exchanger.
  • Verify there is pressure in the loop system where heat is captured or released.
  • Check the loop pumps to make sure they’re operating.
  • Look for problems such as leaks, disconnected or broken wiring, and other obvious issues that could interfere with system performance.

Professional-level troubleshooting
Contact your local trusted geothermal system professional to conduct more detailed and technical diagnostic work on your system and to perform any needed repairs.

  • Reduced function or decreased heating and cooling levels: Could be caused by restricted airflow. Check and change air filter.
  • No cooling: Could be caused by low refrigerant charge, restricted metering device, scale in the heat exchanger, or a defective reversing valve. The thermostat may need to be repositioned to give a more accurate reading of indoor temperatures. The unit may also be too small to adequately supply your indoor cooling needs.
  • Inadequate temperature of warm air: Could be caused by too much airflow through the system. Adjusting the fan motor speed per manufacturer’s instructions may help.
  • High indoor humidity: Could be the result of too much airflow or an oversized unit. A fan motor speed adjustment may help.

AirRite Air Conditioning Company, Inc. is a longtime provider of heating and cooling services for customers Fort Worth, Arlington and nearby Texas communities. Contact us today for more information on common problems with geothermal heat pumps or to schedule a professional maintenance or service appointment for your geothermal system.

Our goal is to help educate our customers in the Fort Worth and Arlington, Texas area about energy and home comfort issues (specific to HVAC systems).  For more information about geothermal heat pumps and other HVAC topics, download our free Home Comfort Resource guide.

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