Gree GVC48ALXL-M3NTC7A - Page 54

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Installation and Maintenance
Service Manual
4. High discharge temperature protection of compressor (E4)
Start
no
no
no
no
no
yes
yesyes
yes
yes
yes
yes
no
no
no
System is abnormal
(such as blockage)
Check the system;
Eliminate the blockage
inside the system
Problem
is solved
Problem
is solved
Problem
is solved
Problem
is solved
Check wiring and
fan capacitor;
replace motor
Check the unit to
let air come in and
come out smoothly
Replace
temperature
sensor
Outdoor uni t’s mo tor is abnormal
(under cooling mode)
Outdoor air comes in abnormally
(under cooling mode)
System is abnormal ,
but resist ance v alue of discharge
sensor for compressor
temperature is abno rmal
Replace con trol
panel
End