Fan Control - LG ATNH126ELFC Service Manual

(4) Compressor Discharge-Temp. Control
After 1 min. of normal control, if it is satisfied with fomula below, it starts to control of Comp. Discharge
Temp.
Cooling mode : The present degree of superheat ≤ 3 (Option)
Heating mode : The target degree of superheat < 0 , The present degree of superheat ≤ 0 (Option)
The present degree of superheat ≥ 0, The present degree of superheat ≤ 5 (Option)
The target degree of superheat is decided for indoor_unit and operation mode.
The target Temp. of discharge pipe is decided for indoor_unit, outdoor_unit and Comp operation Step, the
difference indoor and outdoor.

1.4 Fan control

1) STANDARD STEP : Stop, Operation (2 Step)
2) Phase control : The low Temp.of outdoor (=Cooling), The high Temp. of outdoor
(=heating)
(1) COOLING
Air
circulation FULL SPEED
40
%
OFF
SET POINT
: Outdoor Temp.
(2) HEATING
Air
circulation
OFF
Control fan On/Off, or Decrease the volume of fan's wind.
Phase control
SPEED SLOPE
(OPTION)
or Outdoor pipe Temp.
(OPTION)
FULL SPEED
or Outdoor pipe
OFF FULL SPEED
Outdoor Fan Outdoor Fan
OFF Temp. ON Temp.
(OPTION) (OPTION)
OFF
FULL SPEED
Outdoor Fan Outdoor Fan
OFF Temp. OFF Temp.
or Outdoor pipe
Temp. (OPTION) Temp. (OPTION)
Outdoor Units
Service Manual 141