INVENTOR QLT-700 Manuel De L'utilisateur page 15

|Service Guide
Faults Handling
Before inviting someone to inspect or repair, please check the following items.
Faults
The display screen shows "E3"
The display screen shows "EO"
The display screen shows "E1"
The display screen shows "EU"
The purifier is not working
The purifier has a small amount
of air and is noisy
The air outlet smells odorous
Whether the wheels are pulled
out after inserted
Whether the purifier can be
used with the humidifier
EN
Troubleshooting
The fan speed is out of control: contact the after-sales office for
treatment.
Main control EEPROM hardware failure, and contact the after-sales
office for treatment.
The fault is because of disassembly protection, and the air inlet and
outlet grilles are not assembled properly: assemble the air inlet grilles
and air outlet grilles properly.
PM2.5 air inlet sensor communication failure: contact the after-sales
office for treatment
Firstly, check whether the power cord is plugged into the power
socket, the loose plug caused by the movement of the purifier may
affect the energizing; Secondly, check whether the air inlet grill and
air outlet grill of the purifier are assembled properly. This appliance
is provided with a disassembly protection function. If the air inlet grill
and air outlet grill are not assembled properly, the machine cannot
work.
Firstly, check whether the foreign matters block the air inlet grill and
air outlet grill. If any, remove those foreign matters; Then, check
whether the Pre-Filter becomes dirty or reaches the end of its service
life; and clean the Pre-Filter; Finally, check whether the HEPA Filter
is full of dust or reaches the end of its service life. This time the
replacement of the HEPA Filter is required.
When the appliance is operated for the first time, it smells slightly
plastic, which is normal; If this appliance works in places (like smoking
area or rotisserie, etc.) with strong smell for a long time, you need to
change the filter element frequently and reset it; Check whether the
air inlet/outlet grill and Pre-Filter are full of dust or dirt; if any, maintain
the appliance and clean the dust and dirt on the air inlet/outlet grill
and Pre-Filter.
Yes, tilt the machine at a small angle and pull them out with a little
effort. If the effort fails, try to pull the wheels out while turning them.
The wet environment has a greater impact on the filter element,
and the mist produced by the ultrasonic humidifier may cause
abnormality in the PM2.5 detection of this appliance, so that
simultaneous operation should be avoided as much as possible.
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