Gree GUD50T/A-T Service Manual

GREE U-Match 5 SERIES UNIT SERVICE MANUAL
10
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 expansion valve will
produce rattling sound. When cooling or heating mode is turned on, the valve will be open at a certain step before the compressor
starts.

Gree GUD50T/A-T Specifications

General

Brand	Gree
Model	GUD50T/A-T
Category	Air Conditioner
Language	English