LG Single "A" - Flow Chart

- 68 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Part 3 Control logic
8.4 Flow Chart
• Cooling
Power ON
Power Reset
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)
Fully close
(set 0,-200 pulse, can
hear knocking sound)
LEV
Initialization
(Duration 90 sec)
Compressor ON
Outdoor Fan ON
Starting control
(Duration 240 sec)
On-time control
(Duration continues)
Dis superheating
control
(T
dsh)
Tdsh<20˚C(Option)
Tdsh <20˚CTsh <2˚CTsh ≥2˚C(Option)Tdsh ≥0˚C(Option)
Tdsh>20˚C(Option)
Check Tin
Close LEV Open LEV Close LEV
Back to
Main Control
Check Tin
Super heat control
(T
sh= Tout –Tin)
Check Dis superheating
temp.(Tdsh)