LG Hydro Kit ARNH30GK1A4 Installation Instructions Manual page 108

SERVICE SETTING
108
Display
Title
code
Water pipe
15
overheated
Thermal fuse is
20
damaged
Cause of error
• Abnormal operation of electric
heater
• Leaving water temperature is above
57 °C(R410A)/65 °C(R32)
• Thermal fuse is cut off by abnormal
overheating of internal electric
heater
• Mechanical fault at thermal fuse
• Wire is damaged
Check point & Normal condition
• If there is no problem in electric heater control, possible
maximum leaving water temperature is 57 °C(R410A)/65
°C(R32)
• This error will not be happened if temperature of electric
heater tank is below 80 °C