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5.4.1 Maintenance during start of usage season
• Check the air inlets and outlets of indoor and outdoor units for blockages.
• Check that the ground wire is intact.
• Check whether the line connection is intact.
• Check whether text appears on the remote controller's display after the power is turned on.
• Check whether the outdoor unit mounting bracket is damaged. If it is damaged, please
contact the authorized repair center. If the outdoor unit is rusty, paint should be applied to
the rusty area to prevent its enlargement while ensuring personal safety.
5.4.2 Maintenance during end of usage season
• When the weather is fine, the air supply is run for half a day to dry the inside of the machine.
• If the unit will not be used for a long time, please turn off the power to save energy; the text
on the remote controller display will disappear after the power is turned off.
• Check whether the outdoor unit mounting bracket is damaged. If it is damaged, please
contact the authorized repair center. If the outdoor unit is rusted, paint should be applied to
the rusted area to prevent its enlargement while ensuring personal safety.
• Special protective cover can be used to wrap the external machine to prevent rainwater, dust,
etc. from entering the external machine and corroding the unit.
5.4.3 Maintenance of key components
• Open the equipment door directly below the unit to replace and maintain different
components inside the unit.
• Unscrew the fixing piece, remove the filter assembly (fresh air) and filter assembly (exhaust
air), rinse them with water, dry them, and put them back in place.
• According to the replacement parts, it is recommended to replace the primary filter and the
intermediate filter every 6-8 months, and replace the high efficiency filter every 12 months.
• It is recommended to replace the heat exchange core every 24 months, which can be replaced
by rotating the fixing piece.
• It is recommended to replace the humidifying membrane every 24 months. When replacing
the humidifying membrane, first remove the screws fixing the two brackets of the water tray,
remove the brackets, and then flip the water tray to expose the humidifying film for
replacement.
5.4.4 Maintenance procedures
The table lists the routine inspection and maintenance procedures for the unit's general
components, which may not include the equipment-related external components. If necessary,
refer to other relevant information provided by the equipment manufacturer.
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