InverterCool understands how frustrating it can be when your heat pump starts acting up – it ruins your comfort, energy efficiency, and ultimately increases your power bills. Our mission is to empower our customers with knowledge and how to resolve these inconveniences in times of unprecedented heat pump failures. Below are some of the most prevalent heat pump challenges that you may face, ways of troubleshooting them, DIY fix techniques, and when you should contact a professional.  

Non-responsive Thermostat 

The thermostat is the command center of most HVAC devices/systems. The thermostat glitch is usually the biggest contributor to most heat pump problems. If your heat pump isn’t responsive, cycles too frequently, or does not abide by your configurations, its thermostat could be incorrectly configured or malfunctioning. Occasionally, incorrect cabling or dead batteries in manually-operated thermostats are to blame. For smart thermostats, you may need to update the firmware or factory reset your system to reconfigure properly. Thus, before you can judge whether your system is broken down, always inspect the thermostat.

How to fix it

• Check thermostat mode (auto/heat/cool)

• Replace dead batteries – usually for manual thermostats

• Update your firmware for smart devices

• Check wiring; ensure that it’s properly connected.

• Replace old/outdated/malfunctioning thermostat.

💡 Pro Tip: Visit our thermostat support services to explore InverterCool’s smart thermostat solutions and professional calibration services.

Clogged Air Filter

Heat pumps require an unhampered airflow to guarantee proper air circulation inside your home. Debris and dirt inside the filter restrict airflow, making the system to overwork, overheat, or even shut down. This may be noticed by the faint airflow inside your home, uneven ambient temperatures, or even soaring utility bills. If neglected, the situation may exacerbate into worn components and big losses. So, if you haven’t inspected your air filter for some time, chances are you need to replace it.

How to fix it

• Before inspecting your heat pump, turn it off.

• Remove the filter and inspect it – check for noticeable dirt accumulation.

• Replace dirty/clogged filters with clean or new ones.

• Set a reminder to inspect your filter every month.

• Consider installing washable filters to serve you relatively longer. 

💡 Pro Tip: InverterCool offers cost-effective heat pump maintenance plans to ensure that your system runs clean. 

Frozen Outdoor Unit

While frost and ice are common during cold seasons, encasement of outdoor units by excessive ice or frost may significantly reduce airflow and ultimately the overall efficiency. Further, continued freezing of these devices can result in compressor and fan blade damage.

How to fix it

• Use warm water to clear snow/ice buildup.

• Inspect for obstructed vents.

• Ensure that the outdoor units are well elevated and drain properly.

• If freezing continues, contact an HVAC professional.

💡 Pro Tip: You can book a frozen heat pump inspection with InverterCool to get your system defrosted. 

Low Refrigerant Levels

Low refrigerant level – caused by improper installation or leaks – could be the reason why your heat pump is not functioning properly. Indications are longer run times, inaccurate temperature control, or even some unusual sound. Negligence may cause permanent damage to your compressor.

How to fix it

• Inspect for ice buildup on heater coils.

• Note diminished heating/cooling intensity.

• Observe unusual noises.

• Recharge your heat pump with the recommended refrigerant type.

• Contact a licensed HVAC expert to fix any leak.

💡 Pro Tip: InverterCool boasts certified HVAC technicians to resolve your refrigerant issues and protect your heat pump safely. 

Faulty Capacitor

Heat and electrical stresses cause degradation of capacitors. In heat pumps, capacitor banks are used to fire the fan motor and compressors. Faulty capacitors imply that the system may fail to start, or may just make a buzzing noise without doing anything. Capacitors carry high voltage charges, thus, they shouldn’t be replaced without professional supervision.

How to fix it

• Listen for humming or buzzing sounds.

• If the heat pump does not work and faulty capacitors are the usual suspects, reset the breakers.

• Avoid DIY replacements, as capacitors carry high voltage and require professional handling.

• Call an expert for safe testing/replacement. 

💡 Pro Tip:  InverterCool offers safe, cost-effective capacitor testing/replacement services

Blown Fuses/Tripped Circuit Breakers

If your heat pump has refused to turn on completely, it could be having electrical issues. A blown fuse and tripped circuit breaker are common safety responses to power overloads. However, continual tripping indicates a mishap that could imply overheating or the drawing of excessive current. Figure out what’s causing your breaker to trip prior to switching on to prevent fire hazards.

How to fix it

• Inspect the control panel to check whether the breaker has tripped.

• Reconfigure your system and observe the response.

• If it re-trips, switch it off and contact a professional.

• Check wiring issues, overheating motors, or disconnections.

• Don’t reset the breaker repeatedly; it could be a major issue.

💡 Pro Tip: InverterCool offers fast and affordable electrical diagnostic services for heat pumps.

Takeaway   

Whether it's a thermostat malfunction, a clogged filter, or a frozen outdoor unit, knowing the exact problem helps you take action quickly. While some fixes are simple, others call for professional help. Explore our Heat Pump Triple Protection Warranty to ensure long-term reliability and peace of mind.       

Contact us for further heat pump problems. InverterCool provides you with the best products and solutions!