Error Nos. 01, 02, 06, And 17 - LG Multi V5 Service Manual

ERROR CODES

Error Nos. 01, 02, 06, and 17

Please refer to the Safety Precautions on pages 4-7 for more detail to prevent injury or death regarding the operation and service
WARNING
troubleshooting of the Multi V product.
Error No.
Indoor unit return air or optional remote wall tem-
01
perature sensor communications error.
01 (Fresh Air
Fresh air unit outlet air sensor error.
Unit [FAU])
Indoor unit inlet pipe temperature sensor communi-
02
cation error.
Indoor unit or hydro kit outlet pipe temperature
06
sensor error.
Hydro kit indoor unit water pipe temperature and
16
ambient temperature sensor communication error.
Hydro kit inlet pipe temperature sensor communi-
17 cation error. Outside air duct inlet pipe temperature
sensor communication error.
Is the sensor properly connected to
Is the resistance value of the sensor
136
Description
the PCB?
Yes
normal?
Yes
Replace the PCB.
CN-ROOM: Indoor Air Temperature Sensor
CN-PIPE IN: Pipe Inlet Temperature Sensor
CN-PIPE OUT: Pipe Outlet Temperature Sensor
Measure the resistance of outlet pipe temperature
sensor.
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Details
1. Problem with the sensor.
2. Connections on indoor unit PCB are wrong.
3. Indoor unit PCB has failed.
1. Indoor unit outlet pipe temperature sensor is
disconnected or shorted. (Check the connection on
Sensor has
the indoor unit PCB, then check the thermistor.)
disconnected or
short circuited.
2. Hydro kit liquid side temperature sensor is
Use the OHM
disconnected or shorted. Values read less than
and voltage
check charts.
Water inlet and outlet pipe temperature sensor
disconnected, shorted, or opened.
1. Water inlet temperature sensor disconnected
or shorted. Values read less than -43°C or greater
2. Temperature sensor disconnected, shorted, or
opened.
No
Connect to the PCB properly.
No
Change the sensor.
•
(short), there is an error.
• Sensor resistance value will vary with the
temperature. See below for the resistance
values according to temperature (±5% toler-
ance).
•
•
Causes