Troubleshooting
Last updated: 2026-09-28
These guides work through a problem in the order worth checking, from the cheapest and most likely cause to the least. They are written to solve the issue, not to sell a replacement.
- Air Purifier Making a Rattling Noise: Causes and Fixes
Fix a rattling or buzzing air purifier: check the filter seating, shipping foam, debris, surface and screws before suspecting the fan bearing.
- Air Purifier Not Connecting to Wi-Fi: What to Check
Work through the real causes of air purifier Wi-Fi pairing failures in order: 2.4 GHz band, router security, MAC filtering, range and app state.
- Dehumidifier Not Collecting Water: Causes and Fixes
A dehumidifier that runs but collects no water is usually at its setpoint, defrosting, or starved of airflow. Here is how to check each cause in order.
- Portable AC Blowing Warm Air: Troubleshooting Steps
Why a portable air conditioner blows warm air: mode, compressor delay, unsealed exhaust, hose problems and undersized BTU. Check these in order.
- Smart Fan Not Responding to the App: What to Check
A smart fan that ignores the app is usually offline on Wi-Fi. Check power, band, router isolation and firmware before re-adding the device.
What you will find here
- Appliance not connecting to Wi-Fi or the app
- Dehumidifier not collecting water
- Portable AC blowing warm air
- Air purifier making a rattling noise
Frequently asked questions
When should I contact the manufacturer instead?
If the unit shows no power, smells like burning, leaks from the housing, or the checks do not change anything, stop and contact the manufacturer or a qualified technician. Do not open a sealed unit yourself.
Related: How-to · Maintenance