LG MULTI V HYDRO KIT ARNH963K2A4 Installation Manual page 105

service troubleshooting of the Hydro Kit product.
Hydro Kit Error Code Troubleshooting.
Error Code
01* Air temperature sensor error.
02 Vapor side temperature sensor error.
03
05
06 Liquid side temperature sensor error.
Hydro Kit hot water storage tank temperature sensor
08*
09
11 Hydro Kit and outdoor unit PCB communications error.
12
13 Hydro Kit solar heat pipe temperature sensor error.
14 Hydro Kit flow switch error. Flow switch failed to close.
15
Hydro kit indoor unit water pipe temperature and ambient
16
temperature sensor communication error.
Hydro Kit inlet pipe temperature sensor communication
17*
Hydro kit outlet pipe temperature sensor communication
18*
187
resolutions.
Error Type
Controller and Hydro Kit.
unit PCB and Hydro Kit PCB.
error.
Hydro Kit EEPROM error.
Inverter PCB error.
error.
error.
Hydro kit HEX burst error.
Due to our policy of continuous product innovation, some specifications may change without notification.
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TROUBLESHOOTING
Temperature sensor monitoring the refrigerant system vapor line is
disconnected or shorted.
Hydro Kit PCB is not receiving a communications signal from the Hydro
disconnected or shorted. Check Hydro Kit PCB for issues.
Hydro kit liquid side temperature sensor is disconnected or shorted.
A malfunction with the hot water storage tank temperature sensor was
detected. Pipe temperature sensor disconnected, shorted, or
Communication error occurred between the Hydro Kit PCB board
and the onboard EEPROM. Check EEPROM for bent pins and
improper installation. If installed properly, potential EEPROM
No signal; communications error between Hydro Kit and outdoor unit
Inverter PCB is malfunctioning.
Solar heat pipe temperature sensor disconnected, shorted, or opened.
Check if water pipe operation is normal.
Check for water pipe blockage: Strainer could need cleaning, valve is
malfunctioning, locked, or operating in an unknown manner; air
could be present in water pipe; etc.
Check flow switch. Flow switch is malfunctioning, disconnected, etc.
Temperature sensor is defective or there is hot water inflow.
shorted, or opened simultaneously.
Temperature sensor disconnected, shorted, or opened.
during defrost operation.
Error Codes
Cause
opened.
failure.
PCB.
105