Coway Airmega Mighty AP-1512HH air purifier
- Category
- Air purifiers
- Model number
- AP-1512HH, AP-1512HH(W)
- Region
- United States
- Verified
- Filter replacement indicator
- Air quality indicator colour
- No air is blowing
- The airflow speed does not change
- The airflow speed is significantly weaker than before
- A bad smell comes out of the air outlet
- The colour of the pollution level indicator always stays the same
- Other functional problems
- How to reset the filter replacement indicator
- How to reset a filter cycle before it ends
- How to replace the filters
- How to clean the pre-filter
- How to clean the air quality sensor
- How to adjust the air quality sensor sensitivity
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Indicator lights
| Indicator | Meaning | Checks |
|---|---|---|
| Filter replacement indicator | A filter has reached its replacement cycle. The Odor LED means the deodorization filter and the HEPA LED means the True HEPA filter. While this indicator is active, the pollution level indicator does not light. | 3 causes |
| Air quality indicator colour | The colour shows the current pollution level of the room. | Checks |
Air quality indicator colour
The round lamp on top glows blue, dark purple or red. The colour shows the current pollution level of the room.
Blue: clean air. Source: Parts name; Indicators and buttons, pp. 7–8, 11
Dark purple: polluted air. Source: Parts name; Indicators and buttons, pp. 7–8, 11
Red: highly polluted air. Source: Parts name; Indicators and buttons, pp. 7–8, 11
Problems
- No air is blowing4 causes in the manual. First: the power cord is not connected.
- The airflow speed does not changeThe purifier is in manual mode.
- The airflow speed is significantly weaker than beforeThe filter cleaning or replacement time has passed.
- A bad smell comes out of the air outletThe filter cleaning or replacement time has passed.
- The colour of the pollution level indicator always stays the same3 causes in the manual. First: dust is on the lens of the pollution sensor.
- Other functional problemsThe symptom is outside the checks above.
The airflow speed does not change
The purifier is in manual mode. Source: Troubleshooting; Indicators and buttons, pp. 12, 18
- Set the desired operating mode with the speed button: Auto, 1, 2, 3, ECO.
The airflow speed is significantly weaker than before
The filter cleaning or replacement time has passed. Source: Troubleshooting, p. 18
- Check the filter cleaning and replacement cycles, then clean or replace the filters. See Clean the pre-filter.
A bad smell comes out of the air outlet
The filter cleaning or replacement time has passed. Source: Troubleshooting, p. 18
- Check the filter cleaning and replacement cycles, then clean or replace the filters. See Replace the filters.
Other functional problems
The symptom is outside the checks above. Source: Troubleshooting, p. 18
How-to
- How to reset the filter replacement indicatorAfter replacing the deodorization filter or the True HEPA filter that the Odor LED or HEPA LED named.
- How to reset a filter cycle before it endsWhen a filter was replaced before its replacement cycle was reached.
- How to replace the filtersWhen the Odor LED or HEPA LED lights, or at the replacement cycles: deodorization filter every 6 months, True HEPA filter every year.
- How to clean the pre-filterEvery 2 to 4 weeks.
- How to clean the air quality sensorEvery 2 months, and more often in a dusty room. Without regular cleaning the sensor performance deteriorates.
- How to adjust the air quality sensor sensitivityWhen the pollution level stays at the highest level after 2 hours of operation, or at the lowest level for more than 1 hour while the air does not seem clean.
Maintenance
| Task | When | Source |
|---|---|---|
| Clean the pre-filter with a vacuum cleaner or water | Every 2 to 4 weeks | Source: Filter replacement; Cleaning method: filter, pp. 16–17 |
| Replace the deodorization filter | Every 6 months | Source: Filter replacement, p. 17 |
| Replace the True HEPA filter | Every 1 year | Source: Filter replacement, p. 17 |
| Clean the air quality sensor lens, dust inlet and dust outlet | Every 2 months | Source: Cleaning method: product, p. 15 |
| Clean the air inlet and outlet vents with a soft brush | Every 2 months | Source: Cleaning method: product, p. 15 |
| Wipe the product body with a dry, soft cloth | Every 2 to 4 weeks | Source: Cleaning method: product, p. 15 |
Settings
| Setting | Options | Default | Notes | Source |
|---|---|---|---|---|
| Fan speed | Auto, 1, 2, 3, ECO; press the speed button to cycle. Hold the power button for 1 second to switch off | Auto when the purifier is switched on | Source: Indicators and buttons; How to use, pp. 12–13 | |
| Eco mode | Press the speed button until the Eco mode indicator lights | When no pollution is detected for 30 minutes, the fan stops to save energy. | Source: How to use, p. 13 | |
| Auto mode | Press the power button, then press the speed button to cycle Auto, 1, 2, 3, ECO | Sets fan speed 1 to 3 from the dust sensor reading. Coway recommends it for general users. | Source: How to use, p. 13 | |
| Timer | 1H, 4H or 8H; hold the Timer button until the indicator is off to cancel | Turns the air purifier off after the chosen time. | Source: How to use, p. 13 | |
| Ionizer | Press the Ionizer button to turn the ionizer on or off | Holding the Ionizer button for 3 seconds turns the air quality indicating light on or off. | Source: Indicators and buttons, p. 12 | |
| Air quality sensor sensitivity | Sensitive, Standard or Insensitive | Standard | Lower sensitivity helps when the lamp stays at the highest level; higher sensitivity helps when it stays at the lowest level. | Source: Adjust air quality sensor, p. 14 |
Parts and consumables
| Item | Replace or refill | Specification | Source |
|---|---|---|---|
| Pre-filter | Clean every 2 to 4 weeks | Removes relatively large dust and mold, human hair and pet hair. Reusable by removing dust or washing with water. | Source: Air purification process; Cleaning method: filter, pp. 9, 16 |
| Deodorization filter | Every 6 months, counted at 8 hours a day at maximum airflow | Traps odor and harmful gas. Cannot be cleaned or reused. | Source: Air purification process; Filter replacement; Cleaning method: filter, pp. 9, 16–17 |
| True HEPA filter | Every 1 year, counted at 8 hours a day at maximum airflow | Removes fine dust and cigarette smoke up to 99.97%. Cannot be cleaned or reused. | Source: Air purification process; Filter replacement; Cleaning method: filter, pp. 9, 16–17 |
Specifications
Air purifier with three filters in order: washable pre-filter, deodorization filter and True HEPA filter. The manual covers AP-1512HH and AP-1512HH(W). Source: Air purification process; Cleaning method: filter; Product specification, pp. 9, 16, 19
The filter replacement indicator shows which filter is due: the Odor LED for the deodorization filter (every 6 months) and the HEPA LED for the True HEPA filter (every year), counted at 8 hours a day at maximum speed. Source: Filter replacement, p. 17
A round lamp on top shows the current pollution level of the room: blue for clean air, dark purple for polluted and red for highly polluted. Source: Parts name; Indicators and buttons, pp. 7–8, 11
When the purifier is switched on it starts in auto mode, which sets fan speed 1 to 3 from the dust sensor reading. Source: How to use, p. 13
| Electrical | 120 V~, 60 Hz, single phase, 77 W | Source: Product specification, p. 19 |
|---|---|---|
| Maximum airflow | 268.39 ft³/min | Source: Product specification, p. 19 |
| Dimensions (W × D × H) | 16.81 × 9.56 × 18.30 in | Source: Product specification, p. 19 |
| Weight | 12.34 lb | Source: Product specification, p. 19 |
| Safety feature | The fan motor shuts down when the front cover is open | Source: Product specification, p. 19 |
| Placement | At least 20 cm from walls or adjacent objects and 30 to 60 cm above the purifier; at least 2 m from electronic appliances such as a TV; out of direct sunlight | Source: Safety precautions: Caution, p. 6 |
Recalls
No exact-model match for AP-1512HH in the U.S. Consumer Product Safety Commission recall database, checked . Recalls can name model families, so also check current recalls for Coway.
Sources
- Coway Air Purifier AP-1512HH & AP-1512HH(W) user's manual (English, French, Spanish). Coway. Document AP-1512HH_AP-1512HH_W__MANUAL_US__COWAY_009__19.07.17, revision 009, 2019-07-17, 21 pages, en-US. cowaymega.com (PDF). Listed on the manufacturer's support page. Retrieved 13 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.
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