Part 4 Trouble Shooting
- 69 -
Copyright © 2019 - 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.
Buzzer sounds seven times
Error Displayed Inspection items Cause of occurrence Inspection details
Buzzer sounds
seven times
Error relating to the failure of the
air purifier kit
• Front grill is not completely
closed
• Faulty connection of the limit
switch
• HVPS failure
• Moisture remains after cleaning
the ultra-fine dust filter
• The film of the ultra-fine dust fil-
ter is damaged
• Check whether the front grill is opened or
closed
• Check contacts and connection of the limit
switch
• Check HVPS signal
• Check dryness of the ultra-fine dust filter
• Check condition of the ultra-fine dust filter
film
Is the front grille fully secured?
- Action: fully secure the front grill
• Check whether the front grill is opened or
closed
• Check contacts of the limit switch
- Action: connect the limit switch housing
and the HVPS connector
Limit switch housing
Connect the HVPS to CN-AIRC
• Check the connection of the limit switch
housing and the HVPS connector
- Action: completely dry the filter in the
shade
• Check when the filter was cleaned
• Check filter drying method/time
- Action: replace filter
• Check whether the film of the filter is torn
• Check whether the film of the filter is
burnt
• Check the HVPS Feed Back voltage
- Action: replace HVPS
Is the limit switch
housing and the HVPS connector
connected?
Was the filter sufficiently
dried after cleaning?
There is no damage to
the filter?
Is the HVPS signal normal?
To Next Page
Loading...
Need help?
General
