The LG aircon CH10 error code typically signals a defect in the discharge temperature sensor (or thermistor) in the outdoor sub-unit. This particular LG thermistor, which is the blue wire attached to a copper sensor head, measures the temperature of the air being blown out of the condenser in the outdoor sub-unit. A CH10 error appears on the display if an open or short circuit is detected anywhere along the wiring, the sensor itself, and the outdoor PCB terminal where the sensor is connected. This is to kickstart troubleshooting and prevent further damage to the air conditioning unit.
Troubleshooting a CH10 fault involves a manual reset to clear the system and a thorough inspection of the outdoor unit whose parts may be familiar to you if you’ve closely followed the Housing & Development Board’s specifications on electrical loading of HDB flats and air conditioner installation. To start troubleshooting (and hopefully clearing) the CH10 error on your LG air conditioning unit, turn off the aircon and unplug it from the power outlet. Then remove–if you are able–the AC cover of the outdoor unit. Carefully clean off any dirty or debris-ridden part. Go through securing any loose wiring jacks, as well. Check for damaged and frayed wires, burnt mainboard terminals, and corroded sensor heads. After you’ve completed the troubleshooting, close the AC back cover. Plug the unit back in, turn it on and check the display if it’s still showing the CH10 error code. If it is, then you should turn to a service professional to properly resolve the issue.
Any malfunctioning outdoor thermistor and outdoor PCB can be promptly replaced by Silverback Aircon with working parts from its well-maintained and expertly inventoried collection of refurbished LG spare parts. The table below details the estimated cost of replacing any malfunctioning part that may be involved in the CH10 error on your LG aircon.
It may also help to know Silverback Aircon’s fool-proof method in addressing damaged PCBs. If any of your LG aircon PCBs is found to be malfunctioning and is behind the CH10 error code displaying on your indoor AC unit, Silverback Aircon will replace the entire circuit box that houses the complete set of PCBs corresponding to your LG condenser model. Three types of PCBs–control board, power board, and noise filter–are used in the LG aircon condenser model A4UQ30GFA0. In the LG condenser model AMNC09GDBA2, on the other hand, only two PCBs–control board and power board–exist. Silverback Aircon will install a fully tested and working circuit box, with all the PCBs, and not not simply replace a defective PCB. We know from experience that this is the most cost-effective solution to PCB-related problems.
Take advantage of Silverback Aircon’s free consultation service through Whatsapp. We can help you clear the persistent CH10 error or any other LG aircon error codes in your air conditioning system. If the CH10 error fails to clear after troubleshooting, then it may be due to a fault in the wiring system, outdoor thermistor, or outdoor PCB terminal. We can help you uncover the source of the problem and solve it for good. And don’t forget to note the model number of your indoor unit (refer to the sticker attached to the fan coil unit) and the model number of the condenser unit (refer to the invoice sticker) before you call us. We need the information to correctly diagnose the issue and give you a quote on the possible cost of repair and parts replacement. Book an appointment with us and get your LG aircon to run smoothly and error-free again.
