Philips 4000i Series User Manual page 17

Problem
The appliance is extra
loud�
Error code "E1"
displays on the
screen�
The Wi-Fi setup is
not successful�
Possible solution
• It's normal if the appliance runs at the Turbo mode�
• In the Auto mode, if the appliance is too loud, maybe the
appliance runs at high speed because air quality becomes worse,
or your personalized setting in App triggers a higher fan speed�
You can choose the Sleep mode, or change the settings in the
App�
• If there is abnormal sound, contact the Consumer Care Center in
your country�
• If anything drops into air outlet, it may also cause abnormal loud
sound� Immediate turn off appliance, turn appliance upside down,
to get foreign objectives out of appliance�
• The motor has malfunctions� Contact the Consumer Care Center in
your country�
• If the router your purifier is connected to is dual – band and
currently it is not connecting to a 2�4GHz network, please switch
to another band of the same router (2�4GHz) and try to pair your
purifier again� 5GHz networks are not supported�
• Web authentication networks are not supported�
• Check if the purifier is within range of the Wi-Fi router� You can try
to locate the air purifier closer to the Wi-Fi router�
• Check if the network name is correct� The network name is case-
sensitive�
• Check if the Wi-Fi password is correct� The password is case-
sensitive�
• Retry the setup with the instructions in section "Reset the Wi-Fi
connection"�
• The Wi-Fi connectivity can be interrupted by electromagnetic or other
interferences� Keep the appliance away from other electronic devices
that may cause interferences�
• Check if the mobile device is in airplane mode� Make sure to have
the airplane mode deactivated when connecting to the Wi-Fi
network�
• Consult the help section in the App for extensive and up-to-date
troubleshooting tips�
EN
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