Gree U-Match 5 Series - 2.3 Functions

GREE U-Match 5 SERIES UNIT SERVICE MANUAL
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2.1.2 Heating Mode
Power on
Oil return IN
condition are met
Defrost IN
condition are met
Oil return
operation
Defrosting
operation
Temp of
indoor≤Set
temp
Y
N
Comp. and
outdoor fan
stop
Y
Comp. stop
for 3 min
Y
Y
Heating start
control
Satisfying open
Comp.condition
Comp. and
outdoor fan
run
Avoid cool
wind
indoor fan run
N
N
Y
N
N
indoor fan run
for 1 min
Comp. and
outdoor fan
stop
2.2 Control Mode
2.2.1 Based Control
2.2.1.1 Compressor Control
When cooling or heating mode is turned on, indoor fan will run for a while before the compressor starts.
Under different modes, the compressor can only be stopped after running for some time (special cases excluded).
This is to protect the compressor from frequent start or stop. Once the compressor is stopped, it must not be
restarted right away. Please wait for a few minutes.
2.2.1.2 EXV Control
When the unit is first started, the electronic expansion valve will reset control. During the process, the