LG Y4NV15ANLK0 Data Book page 43

YA Chassis
Error
Descriptions
Code
Detect 4 Way Valve Transfer
72
Failure 7 Times
Function
Over heating Protection
Freeze Protection
Remote Mode
43
• Indoor / outdoor sensor short/open
• Disconnection of 4 way valve
connector
• 4 way valve open/short
• Burned part inside PCBA
Description
This feature prevents over heating of unit by electrical
heater located inside of the unit at the remote mode
(when the unit is connected with wall thermostat).
This feature prevents freezing of room at low tempera-
ture.
When use the remote mode operation
Cause of Error
• Check sensor status (Indoor / outdoor
• Check connector for 4 way valve
• Check 4 way valve coil resistance
• Check CN-4 way output voltage
PTAC
6RWU0-06A
Check Point
middle pipe)
Display code
Product Data