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LG CH23 Error Code: Troubleshooting Guide

LG CH23 Error Code: Troubleshooting Guide

LG CH23 Error Code troubleshoot and solution guide infographic

Are your LG Aircon units having problems? Got a technician to come over and inform you that you have a LG CH23 error code but still can’t solve the problem? Well in this article we will guide you to fixing your LG Aircon with LG CH23 error code. However, that will very much depends on whether we have the available parts to fix your unit, Nonetheless, we will let you know how to find the error code, how to troubleshoot it. And also provide you the estimated cost of fixing this error.


LG fan coil unit's top and bottom light

How to find LG Aircon Error Code?

For Singapore users, you likely will not know what error code you are facing till your Aircon technicians inform you about it. That is because LG error code can only be found on the outdoor units of certain models. Hence, unless you have the right equipment to climb outside of your window and open up the condenser. You may not be able to find the error code. However, for some LG Aircon units in Singapore. You can actually identify the error code by the number of times the lights are blinking. For example, in some LG fan coil units, there are 2 lights, one at the top and another at the bottom. If the top light blink twice, and bottom light blink three times. That will mean that the LG unit is having a LG Ch23 error code.

What does LG CH23 error code mean?

This error code occurs when the DC link isn’t properly charged. This happens when there’s a low voltage or power surge. Most commonly, in Singapore we often use a multi split unit. So if there are only one (1) fan coil units experiencing CH23 error. That means the error most likely comes from that particular fan coil unit instead. However, if all three (3) LG units are blinking, that means the issue is from the condenser unit. Let’s take a look at how to troubleshoot this unit in detail.

How to troubleshoot LG Aircon?

Firstly, assuming if you are using a multi split unit and have located whether the CH23 error comes from indoor or outdoor unit.

If the issue is with the indoor unit, check whether the wire connecting from the outdoor to that particular fan coil unit has low voltage. If the wire has no issue, most likely the indoor PCB is faulty.

However, if the issue is with the outdoor unit, it can be slightly more complicated. We have to identify whether there is 230v coming into the condenser unit. If not, check whether the incoming power supply wire is faulty. Furthermore, we also have to check on the connection of the harness that supplies the input power to the outdoor unit’s main PCB. We will also have to check on the reactor harness. If everything checked is ok, then the issue most likely lies with the PCB or compressor unit.

Estimated Cost of Repair for DC Link Low Voltage Error

Items to Repair Estimated Cost
Indoor PCB $200
Outdoor PCB $300
Outdoor Condenser Unit $350

The estimated cost that we provide below is assuming if the unit is a 9000 BTU LG condenser unit. The price will be a lot more expensive for a multi split unit and ceiling cassette unit. For LG VRV units we may not have the required parts or expertise to fix it.

Conclusion

If your LG aircon is blinking, check if you can find the error code through the indoor unit. If you are having LG CH23 error code. The issue is most likely with the indoor or outdoor PCB unit. You can identify that easily if you are using a multi split unit. However, time to time, the issue may be due to malfunctioning compressor as well. Regardless, check the model number of your LG unit, we may have the relevant spare parts to conduct LG aircon repair for you.

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