LG Multi V5 Service Manual page 127

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.
Table 69: Error Codes, continued.
Error Code
1 0 - Indoor unit BLDC fan motor communications error.
Communication error between hydro kit and inverter
1 1 -
compressor PCB.
1 2 - Hydro kit inverter compressor PCB error.
1 3 - Hydro kit solar heat pipe temperature sensor error.
1 4 - Hydro kit flow switch error.
Hydro kit leaving water temperature has exceeded
1 5 -
185°F (85°C).
Hydro kit indoor unit water pipe temperature and ambi-
1 6 -
ent temperature sensor communication error.
• Hydro kit inlet pipe temperature sensor communica-
tion error.
1 7 -
• Outside air duct inlet pipe temperature sensor com-
munication error.
Hydro kit outlet pipe temperature sensor communica-
1 8 -
tion error.
Refrigerant leak sensor error. Only displayed at the
indoor unit and its wired remote controller.
2 3 0
Communication error between outdoor unit PCB and
2 3 7
indoor unit PCB. Only displayed at the indoor unit and
its wired remote controller.
Communication error between outdoor unit PCB and
2 3 8
indoor unit PCB. Displayed at the indoor unit and its
wired remote controller.
Description
Due to our policy of continuous product innovation, some specifications may change without notification.
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ERROR CODE TABLES
Details
• Fan motor has been removed or is defective. Refer to the resis-
tance and voltage check charts in this service manual.
• The system has detected the fan motor is not spinning.
• On new installs, verify installation manual and paperwork were
removed from fan discharge shroud during installation.
• Check the wiring plug and connections (if applicable).
Hydro kit is not receiving communications signal from inverter
compressor PCB.
Hydro kit inverter compressor PCB error.
Solar heat pipe temperature sensor disconnected, shorted, or
opened.
Flow switch failed to close.
Temperature sensor is defective or there is hot water inflow.
Water inlet and outlet pipe temperature sensor disconnected,
shorted, or opened.
• Water inlet temperature sensor disconnected or shorted. Values
• Temperature sensor disconnected, shorted, or opened.
Outlet pipe temperature sensor disconnected, shorted, or
opened.
• Refrigerant leak sensor error; sensor is malfunctioning.
• Error will also be displayed if the function is enabled on the
wired remote controller, and there is not a sensor installed.
• Refrigerant leak is detected when >6,000 ppm.
• Enable the function through the function code on the remote
controller.
1. Operation stop.
2. Solenoid valve closes on the indoor unit side.
3. CH230 is displayed. If the communication baud is 1,200 bps,
then only the zone controller can display the CH230; central
controller cannot display the error due to lack of information.
4. Buzzer rings 2 long buzzes every 1 second. Ringing stops
when there is an input from the controller. (If there is a hard
lock, then only the controller can make the hard lock to stop
buzzing. If leak sensor measures under 1.5V, then it is consid-
ered normal and the buzzing stops.
5. To release the error, power needs reset.
Indoor unit communications PCB is not receiving signal from out-
door unit communications PCB for more than 3 minutes. Check
RS-485 communications for issues.
Indoor unit communications PCB is not receiving signal from out-
door unit communications PCB for more than 3 minutes. Check
outdoor unit PCB for issues.
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