Learn about Daikin Error Code J6, its meaning, causes, and solutions for thermistor faults.
Error Code J6 indicates a fault with the heat exchanger thermistor, which may affect system performance.
To troubleshoot, check the thermistor connections and ensure there are no obstructions affecting the heat exchanger.
The J6 fault code indicates a problem with the heat exchanger thermistor, which is critical for accurate temperature measurement and system performance. The inverter relies on this sensor to regulate operations, ensuring the heat exchanger operates within optimal temperature ranges. If the thermistor fails or provides incorrect readings, the inverter may trigger a fault to prevent overheating or underperformance. This is part of the inverter's safety protocols, where it continuously monitors sensor inputs to ensure compliance with operational parameters.
Homeowners may notice the inverter displaying the J6 fault code on its LED indicator. This may be accompanied by alerts on monitoring apps indicating reduced system performance or production drops. In some cases, the system may completely shut down to prevent damage, leading to a loss of heating or cooling functionality.
Always ensure that a licensed electrician or certified solar installer performs any troubleshooting or repairs to prevent electrical hazards.
Regular maintenance checks can help prevent this issue. Inspect the thermistor and its connections periodically, especially after severe weather events. Ensure that the inverter firmware is kept up to date and that the entire solar array system is routinely serviced by a qualified technician to catch potential issues early.