Heating Mode; Control Mode; Based Control; Compressor Control - Gree U-Match 5 Series Manual

GREE

2.1.2 Heating Mode

Power on
Heating start
control
Satisfying open
Comp.condition
Comp. and
outdoor fan
run
Avoid cool
wind
indoor fan run

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
N
Y
N
Oil return IN
condition are met
Y
Oil return
operation
Comp. and
outdoor fan
stop
N
Defrost IN
condition are met
Y
Defrosting
operation
11
U-Match 5 SERIES UNIT SERVICE MANUAL
N
Y
Temp of
indoor≤Set
temp
N
Y
Comp. stop
for 3 min
indoor fan run
for 1 min
Comp. and
outdoor fan
stop