Gree U-Match 5 Series - Functions; Low Pressure Protection Control; High Temperature Prevention Control; Setting of Filter Cleaning Reminder

GREE U-Match 5 SERIES UNIT SERVICE MANUAL
14
second time in a certain time period, system will not restore operation. You need to manually turn off the unit and
clear the error before restarting up the unit. (If high pressure protection occurs frequently, please send for
professional personnel to repair.)
2.2.3.2 Low Pressure Protection Control
System will enable low pressure protection control if the low pressure switch is detected open for
continuously a little time. Under low pressure protection, system will be shut down and display error code E3.
When low pressure protection occurs, system will restore operation if the low pressure switch is detected to be
reclosed within a few minutes after shutdown. If low pressure protection occurs for several times in a period of
time, system will not restore operation automatically. You need to manually turn off the unit before restarting up
the unit.
2.2.3.3 High Temperature Prevention Control
Under heating mode, system will enable high temperature prevention control if the temperature sensed by
indoor tube temperature sensor reaches a certain value. When high temperature prevention control is enabled,
outdoor fan will slow down.
2.3 Functions
2.3.1 Setting of Filter Cleaning Reminder
When setting washing remind function, the timer area will display 2–bit number that means the pollution level,
then press “▲” and “▼” buttons to select, and press “SWING/ENTER” button to confirm the setting. Conversion
relation between the displayed pollution level and accumulative operating time are as the following list. After
setting, when it reaches the washing time, “CLEAN” icon will flash and remind, if you press “▲” and “▼” buttons
to adjust the level, and press “SWING/ENTER” button, then the accumulative time for filter washing remind will
not be reset; If the time after adjustment is larger than the current accumulative time, then “CLEAN” icon will stop
flashing; If the time after adjustment is less than the current accumulative time, then “CLEAN” icon will continue to
flash.
The only method for cancelling the remind function is to press “FUNCTION” button to switch to “CLEAN” icon,
and set the timer area to be “00”, and then press “SWING/ENTER” button, then the accumulative time of filter
washing remind is reset.
Pollution Level
Accumulated
Operating Time
(hour)
Pollution Level
Accumulated
Operating Time
(hour)
Pollution Level
Accumulated
Operating Time
(hour)
10 5500 20 1400 30 100