No Heat, No Problem: What to Do When Your Heat Pump Breaks Down

Heat pumps are one of those household systems you don’t think much about until something goes wrong. When they do, it’s usually at the worst possible time. Whether it's the middle of winter or a humid summer afternoon, losing climate control throws off your entire routine. The good news? Most issues are fixable, and some don’t require much more than a quick reset or a maintenance check.

If you’re based in Auckland or Wellington, here’s what to do when your heat pump breaks down, and when to bring in the experts from Fonko.

 

Start with the Obvious Checks

Before jumping to conclusions or assuming the system needs replacing, it’s worth ruling out a few common culprits. Heat pumps can stop working for a range of reasons, and many are simple to spot if you know what to look for.

• Power supply: Ensure the heat pump is actually receiving power. Check the circuit breaker or fuse box for any tripped switches, and confirm the unit hasn’t been accidentally switched off at the wall. 

• Remote control or wall panel: A dead remote battery can make it look like the whole system is broken. Try replacing the batteries or using a different controller if available. If you’re using a wall-mounted control panel, make sure it’s responsive and hasn’t been locked or set to a restricted mode.

• Air filters: Clogged or dirty filters are one of the most common causes of poor performance. Reduced airflow can stop the system from heating or cooling effectively, and in some cases may cause it to shut down entirely. Check the indoor unit for accessible filters, and give them a clean if they’re visibly dusty. If it’s been more than a few months, it’s likely due.
  System settings: It’s surprisingly easy to switch the heat pump to an unintended mode. Make sure it’s not set to ‘fan only’, ‘dry mode’, or a temperature that doesn’t make sense for the season. Also, check the timer functions. If a start or stop timer has been activated accidentally, the system might turn off at unexpected times.

• Error codes or indicator lights: Many modern heat pumps are smart enough to tell you when something’s wrong. Look for flashing lights, error codes on the display, or unusual sounds that occur when you try to start the system. Take note of any error codes or behaviour before turning the unit off; this information can be very useful for technicians when diagnosing the issue.

• Outdoor unit inspection: If safe to access, check that the outdoor unit isn’t blocked by debris like leaves, grass, or outdoor furniture. The unit needs proper airflow to operate, and a blocked condenser coil can cause overheating or system shutdown. You should also listen for any unusual noises like rattling or buzzing that could indicate a mechanical fault.

 

Avoid DIY Repairs 

It’s tempting to lift the cover and try to fix the problem yourself, especially if the unit looks like it just needs a quick reset or a loose wire sorted. But heat pumps are far more complicated than they appear, and a DIY approach often causes more harm than good.

These systems rely on a delicate balance of electrical controls, refrigerant gas, thermodynamic processes, and mechanical components. What might seem like a small issue can quickly escalate if handled incorrectly. 

Even opening the wrong panel can expose you to live electrical parts, moving fans, or pressurised lines. There’s also the very real risk of:

• Causing further internal damage by accidentally dislodging or shorting components

• Voiding your manufacturer or installer warranty, which usually requires all work to be carried out by certified professionals

• Creating safety hazards, especially if the system is mishandled, improperly reassembled, or left partially open

In short, it’s not worth the risk. What you think might be saving you time or money could end up costing much more in repairs, replacements, or lost warranty coverage.

 

Breakdown Repair or Maintenance?

When it comes to heat pump servicing, you’ve got two clear options: reactive repairs or preventative maintenance. The good news? Fonko handles both. The better news? Only one of them helps you avoid the other.

 

Option 1: Breakdown Repair 

If your heat pump has suddenly given up, and none of the usual checks are helping, it’s time to bring in the professionals. Fonko provides prompt, reliable heat pump repair services across Auckland and Wellington, including same-day or emergency callouts when the situation calls for it.

Our experienced technicians are equipped to quickly diagnose and resolve a wide range of issues, including:

• Faulty thermostats or sensors

• Motor or fan failures

• Blocked drains causing leaks or water damage

• Electrical faults or control board issues

• Refrigerant leaks or low-pressure problems

• System resets after power outages or surges
  
  

We work across all major brands and system types, from high-wall units to fully ducted setups. If you’re already experiencing a system failure, book a repair with Fonko today, and we’ll get you sorted.

 

Option 2: Preventive Maintenance

Of course, the best way to deal with a breakdown is to avoid it in the first place. That’s where preventative maintenance comes in. Fonko offers professional heat pump servicing designed to keep your system running efficiently, safely, and without surprises.

Our maintenance service includes:

• Deep cleaning of filters and indoor components

• Testing refrigerant pressure and checking for leaks

• Inspecting and tightening electrical connections

• Clearing drainage lines to prevent overflow

• Verifying temperature calibration and system responsiveness
  
  

It’s the difference between catching a worn motor before it seizes or spotting a refrigerant leak before it drains your system dry. A well-maintained heat pump also runs more efficiently, meaning lower power bills, quieter performance, and longer system life.

 

Notice Something Off? Call the Pros 

Weird noises, weak airflow, odd smells or rising power bills. That’s your heat pump asking for help. Skip the guesswork, avoid the toolbox and leave it to the professionals.

Get in touch with Fonko and we’ll sort it. Repair, maintenance or whatever it needs to get back on track.

Reach out for a quote today.