LG Therma V fault CH15

What it means

This error occurs when the temperature of the water pipe exceeds 72°C, indicating an abnormal overheat condition detected by the water pipe temperature sensor.

Likely causes

1. When hot water is introduced
2. Bad sensor
3. Main PCB (Indoor Cycle) defect

Where to start

1. Check if the thermometer installed outside the product reads below 72°C - if No, inspect the facility
2. If thermometer reads below 72°C (Yes), check if the water pipe sensor is inserted in place - if No, insert into the water pipe according to the correct location
3. If sensor is inserted correctly (Yes), check if the water piping sensor is normal by measuring resistance - if No (abnormal), replace the sensor