If your digital scale shows overload, remove everything from the weighing platform immediately. The message commonly means the load exceeds the scale’s maximum capacity.
If the overload message remains with the platform empty, check the model’s instructions, platform clearance and startup conditions. A persistent warning can also indicate damage that requires service.
Do not press down on the platform, add more weight or repeatedly recalibrate to force the message to clear. Overloading can permanently damage a scale’s weighing sensor. awscales.com
What Does Overload Mean on a Digital Scale?
A scale measures weight within a specified range. When the applied load exceeds that range, it may display an overload warning instead of a weight.
Depending on the model, the message might appear as:
- OL
- O_Ld
- OUEr
- EEEE
- Another model-specific code
These codes are not universal. Confirm the meaning in your manual before troubleshooting.
For example, the AWS CP2-series manual identifies O_Ld as maximum capacity exceeded and instructs users to remove the excess weight. awscales.com
The AWS product FAQ provides additional information about common display messages.
Quick Overload Troubleshooting Guide
| When the warning appears | What to check | First action |
|---|---|---|
| After adding an item | Total load exceeds capacity | Remove the load immediately |
| After adding a container | Container plus contents exceeds capacity | Use a lighter container or higher-capacity scale |
| During startup | Load was present during initialization | Restart empty, following the manual |
| With an empty platform | Obstruction, incorrect setup or possible damage | Inspect accessible areas without forcing the platform |
| After a drop or heavy impact | Possible sensor or platform damage | Stop using the scale and contact support |
| Only with a large container | Unintended contact or poor fit | Use a suitable container and check clearance |
1. Remove the Entire Load
Remove the item, bowl, tray and any other removable weighing container. Do not remove permanent platform parts.
Give the scale an opportunity to return to normal operation according to its instructions.
If the warning clears, compare the total load with the rated capacity before weighing again. If the item’s weight is unknown, use a scale with sufficient capacity rather than testing how much the current scale can tolerate.
2. Confirm the Maximum Capacity
Look for the maximum capacity on the scale’s label, product listing or manual.
A specification such as 200g × 0.01g means:
- 200g: Maximum rated capacity
- 0.01g: Smallest displayed increment
The display increment does not increase the maximum load. Changing from grams to ounces also does not change the scale’s physical capacity.
NIST’s weighing and scales FAQs provides background on scale divisions and weighing terminology. NIST
Find the operating limits for your exact model in the AWS product manuals.
3. Include the Container’s Weight
A container counts toward capacity even when the display has been tared to zero.
Example: A 200g Pocket Scale
| Load component | Weight |
|---|---|
| Empty container | 80g |
| Contents | 150g |
| Total physical load | 230g |
| Scale capacity | 200g |
Although the contents weigh only 150g, the combined load exceeds capacity by 30g.
Tare changes the displayed reference point. It does not increase capacity.
To avoid another overload:
- Use a lighter container.
- Reduce the amount being weighed.
- Choose a scale with sufficient capacity for the complete load.
For commercial weighing, also confirm the model’s tare limits and operating requirements.
4. Restart With the Platform Empty
If the warning appears during startup:
- Remove the load.
- Turn the scale off.
- Place it on a firm, level surface.
- Make sure nothing touches the platform.
- Restart using the normal procedure.
- Wait for initialization to finish.
Follow any model-specific instructions concerning removable pans or accessories.
Do not assume a particular battery-removal sequence or button combination applies to every scale.
5. Inspect Platform Clearance
An empty platform should be free from unintended pressure and obstruction.
Check for:
- Packaging pressing against the platform
- A cover resting on the weighing surface
- An incorrectly fitted removable pan
- Debris around accessible platform edges
- A container touching the housing or nearby objects
- Visible displacement following an impact
Outside contact can interfere with measurements, although it does not necessarily produce an overload code on every model.
Clean only as directed. Do not pry up the platform, insert tools underneath it or try to bend it back into position.
The AWS scale maintenance guide explains appropriate care and handling.
6. Use a Stable Weighing Setup
Place the scale on a surface that supports it securely. Avoid rocking tables, soft materials and nearby vibration.
For sensitive scales, drafts and movement can interfere with stable measurements. NIST’s guidance for sensitive weighing applications discusses these environmental influences. NIST
Improving the setup can help identify a startup or instability problem. It does not make an excessive load acceptable or repair an overloaded sensor.
7. Confirm That You Are Reading the Correct Code
On small displays, LO and OL can be easy to confuse.
| Code | Common meaning | Appropriate response |
|---|---|---|
| LO or Lo | Low batteries | Replace batteries or recharge as instructed |
| OL or O_Ld | Overload | Remove the load |
| UNST | Unstable conditions | Check support, airflow and vibration |
| OUTZ | Zero-range problem on some models | Follow model-specific troubleshooting |
If the manual identifies the message as low power, check the specified battery type and polarity. Replace the complete set rather than mixing old and new batteries, as recommended in Energizer’s battery-care guidance. North America
Fresh batteries should not be treated as a cure for a confirmed mechanical overload.
Why Does My Scale Show Overload With Nothing on It?
A persistent overload warning on an empty scale needs further investigation. Possible explanations include:
- Pressure from packaging or an accessory
- Incorrect installation of a removable platform
- An obstructed or displaced weighing mechanism
- Damage from a previous overload
- Damage following a drop or impact
- An internal sensor or electronic fault
The code alone does not identify which problem is responsible.
If the warning remains after an empty restart and the checks permitted by your manual, stop using the scale and seek support. Avoid repeatedly testing it with additional loads.
The AWS scale FAQs discusses overload-related problems and service guidance.
Can Calibration Fix an Overload Error?
Calibration is not the first response to an overload warning.
It may be appropriate only if the model’s troubleshooting instructions specifically call for it after other checks. It cannot repair a physically damaged sensor or increase the scale’s capacity.
If the scale returns to normal operation, verify performance using an appropriate reference. A display returning to zero does not, by itself, establish that measurements remain accurate.
NIST’s guide to uncertainty for balances and scales explains why reference weights, repeatability and other influences matter when evaluating measurements. NIST
When calibration is appropriate, follow the model’s procedure and use the specified weight. See the AWS guide on how to calibrate a digital scale.
How to Prevent Digital Scale Overload
Choose Capacity for the Complete Load
Include the heaviest expected container and contents when selecting a scale. If your regular loads approach or exceed the maximum, choose a more suitable model.
Place Items Gently
Avoid dropping objects onto the platform. Impact can create forces greater than those produced by gently placing the same object.
Do Not Press on the Platform
Do not test the scale by pushing down with your hand. The force can easily exceed the capacity of a small pocket or precision scale.
Protect the Scale During Storage
Keep heavy objects off the platform and use any supplied protective cover as instructed. Do not assume a cover makes the scale crush-resistant.
Verify Suitability for Commercial Use
If weight determines a sale price, select a scale approved and suitable for that application. Capacity alone does not establish legal-for-trade status.
NIST Handbook 44 contains technical requirements for applicable commercial weighing devices; state and local requirements also need to be checked. NIST
When to Contact Support
Seek help if:
- The overload message remains with the platform empty.
- The platform is visibly tilted or damaged.
- The warning began after a drop or impact.
- The scale no longer returns to zero.
- Verification readings are inconsistent or outside specifications.
- The manual’s troubleshooting steps do not resolve the problem.
Provide the model number, exact code, purchase information and a description of what happened before the warning appeared.
Contact American Weigh Scales support before sending a product for service.
Frequently Asked Questions
Does an overload message mean the scale is broken?
Not necessarily. If it appears because the load exceeds capacity, removing the load may clear it. Persistent errors or incorrect readings afterward require further checks.
Can I press tare to remove overload?
Tare does not reduce the physical load or increase capacity. Remove the excessive load instead.
Why does my scale show overload with an empty bowl?
The bowl may exceed capacity, or the scale may have another setup or mechanical problem. Remove it and restart empty according to the manual.
Can changing units fix overload?
No. Switching between grams, ounces or another unit does not change maximum capacity.
Is the scale accurate after an overload?
Do not assume so. Verify its performance using an appropriate reference and the manufacturer’s guidance before relying on it again.
Clear the Load Before Troubleshooting
Remove the load, confirm capacity and account for the container. Then check startup conditions and platform clearance.
If overload remains on an empty scale—or performance has changed—stop weighing and contact support.