LG FM27AH UE3 - Outdoor Fan Control

5. Trouble Shooting
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Only for training and service purposes
LGE Internal Use Only
Part 3 Control logic
6.1 Function
Working of outdoor fan are different in different models.
Some models are single fan some are two fan type.
6.2 Operating process
Control logic of outdoor fan depends on outdoor temperature
1. AC motor fan control
2. DC motor fan control
6. Outdoor Fan Control
Step_Fan
Step_Fan + 1
Step_Fan + 2
Step_Fan - 1
Step_Fan - 2
41°C
38°C
28°C
22°C
Step_Fan
Step_Fan + 1
Step_Fan - 1
Step_Fan
Step_Fan - 1
Step_Fan - 2
Step_Fan + 1
Step_Fan + 2
Step_Fan
Step_Fan - 1
Step_Fan + 1
FAN1
FAN2
OUTDOOR
TEMP.
HEATING
20°C
14°C
4°C
-3°C
Step_Fan - 3
10°C
COOLING
FAN1
FAN2
OUTDOOR
TEMP.
0
1
2
-2
-4
41°C
38°C
28°C
24°C
FAN FAN
-8
9°C
3
45°C
-9
2°C
-11
-3°C
-7
14°C
-6
18°C
-2
-3
-4
-1
0
22°C
18°C
14°C
10°C
3
-4°C
-6
26°C
4
-8°C
2
0°C
1
4°C
COOLING
HEATING
OUTDOOR
TEMP.
OUTDOOR
TEMP.