Repairing Guides

how to repair a heat pump

by Marlee Hackett III Published 3 years ago Updated 2 years ago
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What Are the Steps to Heat Pump Repair?

  • Clean or replace a heat pump filter: Open the blower access door on the outdoor unit. Remove the filter inside the unit by either sliding or unwrapping it.
  • Oil and adjust a heat pump blower unit: Visually check the motor and any pulleys for small lubrication ports or holes; they may have an arrow with the word oil ...
  • Restart a heat pump at low temperature: Turn the system selector switch to emergency heat. Wait six hours, then return to the normal heat setting.

Full Answer

How do you troubleshoot a heat pump?

Start by checking out a few things:

  • Pump condenser. Start first by making sure that the heat pump condenser (which is outside) is running. ...
  • Check the refrigeration lines. Should the heat pump condenser run, you can try touching the refrigeration lines that run into the condenser. ...
  • Control problem. When you get through the previous steps, it could be that there is a control problem. ...

Should you repair or replace your heat pump?

When comparing the cost of a repair versus a replacement, some experts recommend replacing your heat pump when repair costs exceed 50% of the cost of a replacement. But for older systems that have exceeded 75% of their life expectancy, you should consider purchasing a new unit once repair costs exceed one-third of the replacement cost.

Is your heat pump not working properly?

Heat Pump Not Heating. Your heat pump stopped working because there was a power outage or something else happened. You should check whether the thermostat is set properly. Also, make sure that the heat pump is plugged into an electrical outlet. Maybe you’ve set the thermostat incorrectly. Check if you’ve set it to cooling mode.

Why your heat pump does not reach the set temperature?

Unfortunately, in extremely cold weather, even a properly working heat pump does not reach temperature set on thermostat. Why does this happen? When it gets below 35 degrees, a heat pump loses its efficiency and cannot keep up with the heat loss of the structure. When the temperature in the house drops approximately 2 degrees below the room temperature, supplemental heat comes on to assist the heat pump (usually in the form of electric resistance heaters).

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Can you repair a heat pump?

If you mean, “How can I open up the heat pump cabinet and use some tools to fix the system?”, then the answer is, “There are no repairs you can do—please do not try!” A heat pump malfunction that's bigger than any of the simple issues we'll discuss below can only be repaired by a licensed HVAC professional.

What causes a heat pump to stop working?

A clogged air filter is a common cause behind a heat pump not working, as the system doesn't receive adequate airflow due to this obstruction. The system often overheats and shuts down, leaving you without cooling. Or, not enough cooling makes it into your home due to the restriction.

How do you troubleshoot a heat pump?

Here's where to start when troubleshooting heat pump problems.Check The Thermostat. ... Check The Power. ... Check The Air Filter(s) ... Check The Outdoor Unit. ... Check Refrigerant Levels. ... Check The Reversing Valve. ... Check Your Ductwork. ... When You've Got a Heat Pump Not Working…

How do I know if my heat pump is broken?

How Can You Tell If Your Heat Pump Isn't Working As Well As It...Heat Pump Ices Up in Winter. ... Heat Pump Ices Up in Summer. ... Heat Pump Constantly Cycles On and Off. ... Blower Has Stopped Working. ... The Unit Is Noisy. ... Your Heat Pump Performs Poorly and Utility Bills Are Going Up.More items...•

How many years does a heat pump last?

15 yearsHeat pumps normally last an average of 15 years, though some can wear out after a decade. Some of the newer units being manufactured today can last a bit longer. The factor most important in determining the lifespan of your heat pump is maintenance.

Do heat pumps have a reset button?

Press the Heat Pump's Reset Button or Power Switch Begin by turning the power off to the heat pump. You will need to reset both units by pressing the buttons or flipping the switches. If your heat pump does not have a reset button, it will have a power switch.

Can a heat pump compressor be repaired?

While it's possible to replace just the compressor, you also have the option to replace the entire condensing unit— which would come with a new compressor.

How do I know if my heat pump is low on refrigerant?

Note the following signs that can signal that your heat pump is low on refrigerant: leaking, icing, and inefficient performance.Leaking Heat Pump. Even though a heat pump uses refrigerant to cool or heat a home, the refrigerant doesn't dissipate during regular operation. ... Icing. ... Inefficient Performance.

How do I know if my heat pump is low on refrigerant?

Note the following signs that can signal that your heat pump is low on refrigerant: leaking, icing, and inefficient performance.Leaking Heat Pump. Even though a heat pump uses refrigerant to cool or heat a home, the refrigerant doesn't dissipate during regular operation. ... Icing. ... Inefficient Performance.

Where is the fuse located on a heat pump?

0:197:38How To Replace a Fuse on a Furnace or AC Air Handler Control BoardYouTubeStart of suggested clipEnd of suggested clipAnd typically that's going to be located in the lower compartment. So you have an upper compartmentMoreAnd typically that's going to be located in the lower compartment. So you have an upper compartment that has the combustion blower and burners.

Heat Pump Troubleshooting Advice | Thermostat

Check selections on the thermostat. Ensure that it is set to the desired settings. I’ve responded to service calls where the homeowner made a no he...

Heat Pump Troubleshooting Advice | Power Supply

Check power supply. This can include a circuit breaker and or/a regular looking wall switch close to the unit. This is another easy fix. I have res...

Heat Pump Troubleshooting Advice | Ice Or Freezing

In the summer check for freezing up of the heat pump. If the air heat pump unit is frozen turn it off. Check the air filter(s) to make sure they ar...

Heat Pump Troubleshooting Advice | Air Flow

Is the air handler blower working good and blowing air out of all of the supply vents? If not or it is weak then you likely have an airflow issue....

Heat Pump Troubleshooting Advice | Condenser Fan Motor

Is the condenser fan motor turning at the heat pump condenser? Word of note - sometimes in the winter or when you have the heat pump in heating mod...

How to make a heat pump work harder?

Also be aware that the heat pump will have to work harder to produce heat when in defrost mode and/or when it’s particularly cold outside. 1 Be sure the thermostat is set properly. Raise the set temperature 5 degrees F. and then wait a few minutes for the heat to come on. 2 Be sure the room-heating registers are open.

What to do if a heat pump breaker tripped?

The two circuit breakers that protect the electrical circuits providing power to the air handler and heat pump condenser may have tripped. Check both the main electrical panel and any subpanels that supply power to the unit. If a circuit breaker has tripped, reset it by flipping it to OFF and then to ON.

Why does my heat pump turn off and on?

When a heat pump turns off and on too frequently, the problem may be that the unit is overheating because of a clogged filter or blower that is malfunctioning. Try cleaning or replacing the filter. Check the thermostat settings if your heat pump is cycling poorly.

Why doesn't my heat pump run?

Heat Pump Does Not Run. If your heat pump doesn’t go on at all, there is a problem with the thermostat or the unit receiving power. Do the following: 1 Be sure the thermostat is set to the proper setting (“Heat” if you’re calling for heat) and the temperature you want the room to be.

What temperature does a heat pump turn on?

These elements automatically turn on at a fairly low temperature—around 20 degrees F.

Does a heat pump melt ice?

Freezes Up or Trips Breaker. It isn’t unusual for a heat pump to ice-up in really cold weather, but it’s defrost cycle should kick on periodically to melt the ice. If the condenser unit of the heat pump is frozen up and the defrost cycle doesn’t melt the ice, turn it off.

Do heat pumps discharge hot air?

Heat pumps don’t discharge air that is as hot as the air discharged by oil or gas forced-air furnaces, so don’t expect their output to feel like that of a furnace when they’re on. But if you’re used to a certain temperature of air and your heat pump is producing much cooler air, take the following steps.

Why is my heat pump not working?

1) A low refrigerant charge can cause problems with a heat pump and providing good efficient heat. If you have noticed the heat pump has been struggling and the temperatures outside are not terribly bad you may want to call for service to have it checked. 2) Compressor is not working.

What does it mean when a heat pump is not cooling?

A heat pump with no heat or not cooling (in the summertime) is a problem. Here are some simple troubleshooting steps you can take to fix the heat pump problem, hopefully. Before calling a heating and air conditioning company, check the following:

Is the air handler blower working?

Is the air handler blower working well and blowing air out of all of the supply vents? If not or it is weak, then you likely have an airflow issue. Always make sure you have a clean filter and that all of your supply vents are open and unobstructed. If this is all good, then you have another problem with the airflow.

Do heat pumps have a breaker?

These switches are typically not on heat pumps as a heat pump liking has a breaker next to the heat pump. Make sure you check the breaker at the air handler and the breaker in the main panel. A typical split system will have separate breakers. One for the condenser and one for the air handler.

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