The Airmega 250 filter indicator names the due Max2 stage. Reset it only after servicing the indicated pre-filter or Max2 filter. Read the exact indicator before resetting anything: filter, air-quality, network and motor warnings do not mean the same thing. Keep the unit upright with its inlets clear and use only the controls and removable items named in the manual. What the alert means: Coway tracks pre-filter cleaning and Max2 replacement separately, so the lit indicator determines the maintenance action. What to distinguish first: Identify which filter light is active and inspect the correct stage; an early manual reset can otherwise hide real remaining life. 1. Confirm the exact symptom — Coway tracks pre-filter cleaning and Max2 replacement separately, so the lit indicator determines the maintenance action. 2. Prepare safely — Turn the purifier off and unplug it before opening a cover, cleaning a sensor or touching a filter. 3. Apply the official check — After fitting Max2, hold Filter Reset for more than three seconds; follow the manual's separate selection sequence for an early reset. 4. Interpret one retest — Confirm the intended filter light goes out without clearing the other stage. If not, verify the selected indicator and repeat once. The official Coway procedure identifies this exact symptom and supports the checks above. Do not wash a non-washable HEPA or carbon filter and keep liquids away from the fan and sensor electronics. Stop and contact support if a motor code remains, the fan does not start or there is heat, smoke or an electrical smell.
Models covered
Safety first
- Do not wash a non-washable HEPA or carbon filter and keep liquids away from the fan and sensor electronics.
What the symptom may indicate
Checks in the right order
- Confirm the exact symptom
Coway tracks pre-filter cleaning and Max2 replacement separately, so the lit indicator determines the maintenance action.
- Prepare safely
Turn the purifier off and unplug it before opening a cover, cleaning a sensor or touching a filter.
- Apply the official check
After fitting Max2, hold Filter Reset for more than three seconds; follow the manual's separate selection sequence for an early reset.
- Interpret one retest
Confirm the intended filter light goes out without clearing the other stage. If not, verify the selected indicator and repeat once.
Stop and get qualified help when
- Stop and contact support if a motor code remains, the fan does not start or there is heat, smoke or an electrical smell.
Next step
Repair, replace a part, or arrange a diagnosis?
Use the checks and stop conditions above to choose a cautious next step. A symptom alone never proves that the appliance has failed.
Resolve it without buying anything
Complete the 4 user-accessible checks in order. If normal operation returns and no warning sign remains, no replacement is indicated.
Replace only the confirmed part
If the checks isolate a worn or blocked component, match its complete reference to the exact appliance model before ordering.
Airmega 250 Max2 Filter
Genuine Max2 set combining a HEPA filter and an activated-carbon filter for Airmega 250 and 250S.
Amazon results are not a compatibility confirmation.Arrange a diagnosis before replacing the appliance
Stop at any warning sign listed above. A qualified diagnosis should confirm that repair is unsafe, unavailable or uneconomical before an appliance replacement is considered.
Sources used
- Coway — The official Coway procedure identifies this exact symptom and supports the checks above.
Last checked: 30 August 2026