A geothermal heat pump is one of the most trouble-free ways to stay cozy through Northern Michigan’s snowy winters and keep cool on the warmest summer days. Even with proper geothermal heat pump maintenance, though, sometimes things go wrong. When that happens, a little troubleshooting can help you get your system running again. Most of the following tips will apply to issues with any heat pump system, not just geothermal.
- Heat pump doesn’t turn on – Check that the thermostat is set to “heat” or “auto” for heating and “cool” for air conditioning. Make sure there are no tripped breakers or blown fuses in your home’s main fuse box. Inspect incoming electrical connections for breakage or corrosion. If everything looks OK, the system may have gone into lockout mode. Try resetting the unit.
- No air – Look for registers and vents blocked by furniture or other items. Blockages in one area can interfere with airflow to others. If the fan motor is running, but no air is coming from any of your registers, you may have a broken fan belt.
- No heat – If your system is set to “heat,” but you’re not getting warm air, your airflow may be set too high. A technician can adjust the fan motor speed and airflow rate.
- No cooling – If your compressor is running, but your geothermal cooling isn’t working, the refrigerant charge may be low. You’ll need a technician to inspect for leaks and add refrigerant. If the compressor isn’t running, the system may have gone into lockout mode and need to be reset.
- Heat pump turns off early – If your system turns off before the thermostat temperature is reached, a dirty air filter could be to blame. A dirty filter impedes airflow and strains the motor, causing it to overheat and shut down. A malfunctioning blower is another possibility.
- Poor humidity control – This problem is usually due to sub-optimal airflow. Consult with a professional about having the airflow and fan motor speed adjusted for better performance.
For expert help keeping your geothermal heat pump running reliably year round, get in touch with us at Team Bob’s Heating Cooling Plumbing. We keep homeowners comfortable in Traverse City and around Grand Traverse County.
Our goal is to help educate our customers in Traverse City, Michigan and surrounding areas about energy and home comfort issues (specific to HVAC systems). For more information about geothermal heat pump and other HVAC topics, download our free Home Comfort Resource guide.
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