Flow Chart - LG Single A Svc Manual

Part 3 Control logic

8.4 Flow Chart

• Cooling
Tdsh<20˚C(Option)
Dis superheating
T <20˚C
dsh
Close LEV
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Only for training and service purposes
Power ON
Initialization
(Duration 90 sec)
Compressor ON
Outdoor Fan ON
Starting control
(Duration 240 sec)
On-time control
(Duration continues)
Check Dis superheating
temp.(Tdsh)
control
(T )
dsh
≥0˚C(Option)
T
dsh
Check T
in
Back to
Main Control
Power Reset
LEV
Fully close
(set 0,-200 pulse, can
hear knocking sound)
Fully Open
Standard Initial set
pulse open
Step control (every
1 min response time)
Catch up the stagnation
Step control (every
2 min response time)
Super heat control
(T
T <2˚C
sh
Open LEV
- 48 -
Tdsh>20˚C(Option)
= T –T )
sh out in
≥2˚C(Option)
T
sh
Check T
in
Close LEV
LGE Internal Use Only