Daikin Comfort Technologies Manufacturing Recalls Daikin FIT, Amana Brand S-series, and Goodman SD Heat Pumps Due to Risk of Excessive Heat Exposure

What was recalled

In June of 2024, the U.S. Consumer Product Safety Commission (CPSC) announced a significant recall involving heating and cooling systems manufactured by Daikin Comfort Technologies Manufacturing. This action affects three well-known brands within the Daikin family: the Daikin FIT line, the Amana Brand S-series, and Goodman SD heat pumps. These are not small appliances or portable units; they are central HVAC systems designed to provide both heating and cooling for residential properties. The recall specifically targets beige-colored outdoor units where the model name is visibly printed on the exterior casing.

The scope of this recall is defined by specific model numbers rather than just general product lines. Consumers need to check the serial plate located on the side of their unit to identify their exact model number against the list provided below. The affected Daikin FIT models include DZ6VSA1810-AA, DZ6VSA1810-AB, DZ6VSA2410-AA, DZ6VSA2410-AB, DZ6VSA241E-AB, DZ6VSA3010-AA, DZ6VSA3010-AB, and DZ6VSA3610-AB. For the Amana Brand S-series, the recalled models are ASZS601810-AA, ASZS601810-AB, ASZS602410-AA, ASZS602410-AB, ASZS60241E-AB, ASZS603010-AA, ASZS603010-AB, and ASZS603610-AB. Finally, the Goodman SD heat pumps included in this recall are identified by the following model numbers: GSZS601810-AB, GSZS602410-AB, GSZS60241E-AB, GSZS603010-AB, and GSZS603610-AB.

While the provided recall documentation from the CPSC does not explicitly state the total number of units sold or the specific retail locations where these systems were installed, it is important to understand that these models are widely used in homes across the United States. Daikin Comfort Technologies initiated this voluntary recall on June 27, 2024, after discovering a software flaw that could cause the heat pump to behave unexpectedly during power interruptions. If you own one of these specific beige units and it is connected to your home’s climate control system, it falls under the purview of this safety notice.

The reason these particular models were singled out is due to their reliance on software logic that governs how the system resumes operation after a power outage. When power is restored, the unit may incorrectly activate heating mode even if your thermostat was set to cooling. This means that if you have one of the listed Daikin FIT, Amana S-series, or Goodman SD models, and it has experienced a recent power fluctuation, you should be aware of this potential issue. The recall process is designed to address this specific configuration error, ensuring that your system responds correctly to your thermostat settings regardless of power status changes.

If you are unsure whether your unit is part of this recall, the most reliable method is to locate the serial plate on the side of your outdoor condenser unit. Compare the model number printed there with the lists provided above. If your model number matches any of those listed for Daikin FIT, Amana S-series, or Goodman SD, you are affected by this recall. It is crucial to verify this information because the remedy varies depending on whether your system is connected to WiFi or not. For those with WiFi-enabled systems, Daikin Comfort Technologies is offering a remote software update. For those without WiFi connectivity, registration and manual update instructions are required to ensure your safety and comfort.

The hazard, explained

At the heart of this recall is a specific and somewhat counterintuitive failure mode in how these heat pumps respond to power disruptions. Under normal circumstances, your Daikin FIT, Amana Brand S-series, or Goodman SD unit relies on its thermostat to dictate whether it should blow cool air or warm air. You set the system to "cool," and it cools. But this particular software glitch creates a dangerous disconnect between what you see on your thermostat display and what the physical hardware actually does.

The problem occurs when there is an interruption in power to the unit—whether from a brief grid fluctuation, a tripped breaker, or a storm-related outage. When the electricity cuts out, the heat pump shuts down completely. The danger arises the moment power is restored. Due to the software error, the system fails to re-read the thermostat’s current setting upon reboot. Instead of checking whether you want cooling, the unit defaults to its last known state or a default heating mode, causing it to start blowing hot air immediately.

This means that if your power goes out on a sweltering summer day while you have your thermostat set to cool, the system will not turn back on as a cooler. It will kick into overdrive, pumping hot air into your home as if you had manually switched it to heat. For most people, this is merely an inconvenience that leads to a high energy bill and a warm house. However, for specific vulnerable populations, this sudden surge of excessive heat can be physically harmful.

The risk of injury is not about mechanical explosion or electrical fire; it is strictly thermal. Heat pumps in this defective state can raise indoor temperatures rapidly and significantly. This poses a serious risk of heat-related illnesses, such as heat exhaustion or heat stroke, particularly for individuals who are less able to regulate their own body temperature or escape the environment quickly. Infants, young children, elderly adults, and people with pre-existing heart or respiratory conditions are at the highest risk. Even healthy individuals can suffer from dehydration, dizziness, or confusion if trapped in a room where the temperature is climbing unexpectedly because they believe the air conditioning is running. The CPSC’s concern is that consumers may not realize their AC has stopped working and switched to heating until it is too late to adjust the thermostat or seek relief elsewhere.

It is important to note that this hazard is entirely dependent on a power interruption. If your power remains stable, the system will operate normally according to your settings. The defect only activates when the "brain" of the unit loses power and then attempts to reboot without the correct software instructions to reset its mode.

Who is most at risk

The primary group facing risk in this recall consists of homeowners and renters who have installed Daikin FIT, Amana Brand S-series, or Goodman SD heat pumps that are specifically affected by the software glitch. While the technical failure involves a hardware-logic error triggered by power interruptions, the people most vulnerable to the consequences are those who rely on these systems for consistent climate control, particularly during extreme weather conditions. The hazard is not immediate fire or explosion, but rather a sudden, uncontrolled surge of hot air into living spaces when power is restored after an outage. This creates a specific danger profile for individuals who may be unaware that their thermostat setting has been overridden by the system’s faulty logic.

Vulnerable populations such as young children, the elderly, and individuals with chronic respiratory or cardiovascular conditions face heightened risks from this defect. When a heat pump erroneously switches to heating mode while the thermostat remains set to cooling, indoor temperatures can rise rapidly and significantly above safe comfort levels. For elderly residents, whose bodies may struggle to regulate temperature effectively due to age-related physiological changes, a sudden spike in ambient heat can lead to dangerous overheating, dehydration, or exacerbation of existing health conditions. Similarly, infants and young children have less efficient thermoregulation systems than adults, making them more susceptible to heat stress even in moderately warm environments that might feel only slightly uncomfortable to others.

Additionally, individuals with respiratory issues such as asthma or chronic obstructive pulmonary disease (COPD) may find the combination of high humidity and elevated temperatures particularly aggravating. Heat pumps often circulate air, and if the system is running in an unintended heating mode, it may dry out the air or create stagnant, hot pockets within rooms where these individuals spend significant time, such as bedrooms or living areas. The risk is further compounded for those who are alone during power outages. If a homeowner is away from home when the power flickers and returns, they may not realize the system has malfunctioned until it is too late, potentially leaving vulnerable family members exposed to excessive heat for hours before the issue is discovered.

It is also important to note that anyone living in areas prone to frequent power fluctuations or storms is at greater risk of encountering this specific failure mode. The defect is triggered by a power interruption; therefore, the more often your local grid experiences outages, the higher the probability that one of these units will enter the faulty state. This makes residents in storm-prone regions particularly dependent on the timely software update provided by Daikin Comfort Technologies to ensure their safety and comfort.

How to tell if you have the recalled item

Identifying whether your specific heat pump unit is part of this recall requires a bit of detective work, but it is straightforward once you know exactly where to look. The first step is confirming the brand and model family. This recall covers three specific lines of heating and cooling equipment manufactured by Daikin Comfort Technologies: the Daikin FIT, the Amana Brand S-series, and the Goodman SD. If your unit does not bear one of these brand names or model series, it is likely not included in this specific safety notice.

Once you have identified the brand, you need to verify the exact model number. The CPSC report specifies that the recalled units are beige in color, which can help with visual confirmation, but the definitive proof lies in the serial plate. This metal tag is located on the side of the outdoor unit (the part of your system that sits outside your home). Look closely at this plate for a string of characters labeled as the model number. Do not rely solely on the marketing name printed on the casing; you must compare the alphanumeric code on the serial plate against the specific list of recalled models provided by Daikin.

The affected model numbers are quite specific and include combinations such as DZ6VSA1810-AA, ASZS601810-AA, GSZS601810-AB, and others extending through various 2410, 3010, and 3610 series variants. Because there are many similar-looking codes, it is crucial to read the plate carefully and match every character, including the hyphens and letters at the end, against the official list. If your model number appears in that detailed list, your unit is subject to this recall.

If you cannot find the serial plate or are unsure about the reading, do not guess. The safest approach is to contact Daikin Comfort Technologies directly. You can call their toll-free number at 855-545-0235 between 8 a.m. and 4:30 p.m. CT, Monday through Friday. Alternatively, you can visit http://www.goodmanmfg.com/fit-recall to register your system or check the "Product Recalls" section on https://daikincomfort.com/. These resources will allow you to confirm your unit’s status with certainty before taking any further action.

What to do — step by step

Your refund, repair, or replacement options

The most reassuring aspect of this recall is that Daikin Comfort Technologies (DCT) has designed a remedy that prioritizes convenience and minimal disruption to your daily life. Unlike some recalls that require you to ship heavy equipment back to a factory or schedule complex in-person service visits, the primary fix for this issue is digital. The company is addressing the software glitch directly, which means you do not need to replace your entire heat pump unit. Your system remains perfectly viable; it simply needs a small update to its internal logic to prevent it from heating when you expect cooling.

If your Daikin FIT, Amana Brand S-series, or Goodman SD heat pump is currently connected to WiFi, the process is as straightforward as possible. DCT is performing these software updates remotely. This means that in many cases, you may not even notice the fix happening. The company will reach out to you with instructions on how to authorize this remote update. It is important to keep your system connected to the internet during this time, as the update relies on that connection to transmit the new safety protocols to your unit’s control board.

For those of you who have not yet connected your system to WiFi, or if your specific model does not support remote updates, DCT has provided a clear alternative path. You are required to register for the recall to receive the necessary instructions to perform the update yourself or to arrange for assisted service. This registration is the critical first step that unlocks all subsequent support. By registering, you ensure that DCT can track your unit and provide you with the correct technical guidance tailored to your specific configuration.

To begin this process, you should visit http://www.goodmanmfg.com/fit-recall. This dedicated portal is the central hub for managing your recall status. Alternatively, you can navigate to https://daikincomfort.com/ and scroll to the bottom of the page where you will find a link labeled "Product Recalls." Clicking this link will guide you to the same registration resources. If you prefer speaking with a human representative, DCT has established a toll-free line at 855-545-0235. Their support team is available from 8 a.m. to 4:30 p.m. Central Time, Monday through Friday.

It is worth noting that the recall facts provided do not specify any monetary refunds or direct financial compensation for the inconvenience. The remedy is strictly technical: correcting the software error to eliminate the risk of excessive heat exposure. There is no mention of replacement units being offered at this time, as the existing hardware is safe once the software is updated. Therefore, your "option" here is effectively a free repair via software update. Do not hesitate to use the contact methods above if you are unsure whether your unit qualifies for remote updating or if you need help navigating the registration portal.

What can happen if you ignore it

When a product recall involves heating systems, the consequences of inaction are rarely just about inconvenience; they often touch on immediate physical safety and home integrity. In this specific case, the hazard is defined by a dangerous mismatch between what your thermostat says and what the heat pump actually does. If you choose to ignore this recall, you are effectively leaving a hidden trigger in your home that could activate at any moment, particularly during common power fluctuations such as thunderstorms or grid maintenance.

The primary risk here is excessive heat exposure. Under normal circumstances, if you have set your thermostat to "cool," the system should blow cold air. However, due to the software glitch described in this recall, a brief power interruption can cause the unit to reset its internal logic incorrectly. When power returns, the system may ignore your cooling command and instead begin pumping hot air into your home. This is not a minor error; it is a fundamental failure of climate control that can escalate rapidly. For households with elderly family members, infants, or individuals with heat-sensitive medical conditions, this sudden spike in indoor temperature can lead to heat-related illnesses, including heat exhaustion or heat stroke, especially if the home becomes unlivable before the issue is noticed.

Beyond direct health risks to occupants, there are significant secondary dangers to your property. If you have left the home while the system is malfunctioning and inadvertently heating when it should be cooling, indoor temperatures can rise well beyond safe levels. This excessive heat can damage sensitive electronics, warp hardwood floors or furniture, and degrade the structural integrity of materials over time. Furthermore, if the heat pump continues to run uncontrollably, it may trigger other safety mechanisms in your home’s electrical system, potentially leading to circuit breaker trips or, in rare but possible cases, electrical fires due to component overheating.

It is important to note that as of the recall date of June 27, 2024, no incidents have been reported by Daikin Comfort Technologies. This silence does not mean the risk is zero; rather, it means the flaw has not yet caused a documented event. Relying on luck is not a safety strategy. The potential for harm exists because the device is operating contrary to its design intent without your knowledge. By ignoring the recall, you are delaying the resolution of a defect that can turn your home from a place of comfort into an environment of risk. The fix is remote and relatively straightforward for connected units, or easily managed for others through the provided registration process. Taking no action leaves you vulnerable to these unpredictable outcomes for as long as the defective software remains in place.

Staying safe: broader tips

While this specific recall addresses a software glitch in certain Daikin, Amana, and Goodman heat pumps, the underlying issue highlights a broader truth about modern home comfort systems: they are increasingly complex pieces of technology that bridge the gap between mechanical engineering and digital connectivity. As our homes become more "smart," relying solely on automated controls can sometimes create blind spots in safety. To stay safe with any heating, ventilation, and air conditioning (HVAC) system, it is helpful to understand how these devices interact with your home’s electrical grid and your daily routines.

One of the most critical, yet often overlooked, safeguards in any HVAC system is regular professional maintenance. Heat pumps, like cars, require periodic check-ups to ensure their internal sensors and switches are functioning correctly. During an annual service visit, a certified technician can inspect the contactors and relays that control power flow. These components wear out over time and can sometimes stick or fail to reset properly after a power fluctuation—a scenario similar to the one described in this recall. Keeping your system in top mechanical condition ensures that even if software updates are delayed, the physical hardware is robust enough to handle minor electrical anomalies without posing a risk.

Furthermore, it is wise to develop a "power-down" habit during severe weather events. Heat pumps are sensitive to voltage spikes and interruptions common during thunderstorms or heavy winds. If you anticipate a significant storm, consider turning your thermostat to the "Off" position rather than just setting it to a different temperature. This completely cuts the command signal to the outdoor unit, preventing it from attempting to restart in an unpredictable state when power returns. While this may require you to manually turn the system back on later, it is a simple, low-tech safety buffer against the very type of automatic malfunction that software updates are designed to fix.

Finally, stay proactive about product registration and recall monitoring. Many consumers buy major appliances and forget to register them, which means they miss out on critical safety notifications until it is too late. Always take five minutes after installation to fill out the registration card or complete the online form. This ensures that if a manufacturer identifies a defect in your specific model, you are the first to know. Additionally, periodically check the Consumer Product Safety Commission (CPSC) website and sign up for their email alerts. Being informed is your best defense against unexpected hazards, allowing you to act before a minor issue becomes a major safety concern.