LG Multi V 5 commercial VRF aircon CH193 error code
Use this LG Multi V 5 commercial VRF CH193 error code guide to decide when to stop resetting, what to capture, and what to check before parts are quoted. Read the final display digit: 1 identifies the master, 2 slave 1, and 3 slave 2.
What does LG CH193 mean?
LG Multi V 5 commercial VRF CH193 is listed as master outdoor unit: Outdoor fan-heatsink overtemperature protection, slave 1 outdoor unit: Outdoor fan-heatsink overtemperature protection, and slave 2 outdoor unit: Outdoor fan-heatsink overtemperature protection in VRF, Cassette, Ducted rows such as LG Multi V 5 commercial VRF. The loaded row is source-backed by official diagnostic material. Use the complete display code and its final digit - 1 for master, 2 for slave 1, or 3 for slave 2 - to choose the reporting outdoor frame before parts are quoted. Confirm the complete display code and whether its final digit identifies the master, slave 1, or slave 2 outdoor frame before accepting a parts quote.
Fan motor locked, slow, not rotating, or outside the expected feedback range.
Fan blade obstruction, worn motor, weak capacitor, or damaged motor harness.
Indoor or outdoor PCB drive fault after the motor and wiring are tested.
Choose the matching source row
The same visible code has more than one source-backed meaning. Match the model family, system type, or reporting unit before approving parts.
| Code | What it means | What to check first |
|---|---|---|
| 1931 | master outdoor unit: Outdoor fan-heatsink overtemperature protection | Use the complete 1931 display for the master outdoor unit source row. |
| 1932 | slave 1 outdoor unit: Outdoor fan-heatsink overtemperature protection | Use the complete 1932 display for the slave 1 outdoor unit source row. |
| 1933 | slave 2 outdoor unit: Outdoor fan-heatsink overtemperature protection | Use the complete 1933 display for the slave 2 outdoor unit source row. |
What to do now
Use these steps before another reset or parts quote.
Stop using the unit if CH193 returns
If CH193 returns after one reset, stop repeated restarts and get the matching source row diagnosed.
Reset CH193 once
Capture the CH193 display first, then power-cycle once only and note whether the same fault returns.
Send these to us
CH193 error code, a clear display photo, LG Multi V 5 commercial VRF model stickers, affected rooms, reset result, and fan noise or no-airflow symptoms
Source-specific guidance
These diagnostic-reference notes help match the code to the exact model. Electrical, refrigerant, wiring, resistance, and component checks are technician work, not DIY steps.
| Source detail | What it says |
|---|---|
| Source repair action | Record 1931 and confirm that the master outdoor unit reported it. Avoid repeated resets and arrange fan motor, connector, feedback, driver, and mechanical-obstruction checks. |
| Source repair action | Record 1932 and confirm that the slave 1 outdoor unit reported it. Avoid repeated resets and arrange fan motor, connector, feedback, driver, and mechanical-obstruction checks. |
| Source repair action | Record 1933 and confirm that the slave 2 outdoor unit reported it. Avoid repeated resets and arrange fan motor, connector, feedback, driver, and mechanical-obstruction checks. |
| Singapore / model note | LG Singapore lists Multi V 5, but the installed unit nameplate and matching service manual control. Do not apply this row to Multi V i or another LG family. |
What to check before repair
Use this split to separate safe evidence capture from the tests a technician should prove before quoting parts.
| You can check | Technician should confirm |
|---|---|
| Before resetting CH193, take a clear display photo. | Confirm whether CH193 points to the indoor fan, outdoor fan, or drive circuit. |
| Capture the LG Multi V 5 commercial VRF indoor and outdoor model stickers so the correct family row is used. | Check for blade obstruction, motor winding, feedback signal, and connector condition. |
| Note whether one room, several rooms, or the whole system is affected, plus whether it returns after one reset. | Confirm PCB fan-drive output before quoting a motor or board. |
What changes the next step
These clues decide whether the first check belongs to the master, slave 1, or slave 2 outdoor frame identified by the final display digit.
| What you see | What it points to |
|---|---|
| Only one indoor unit shows CH193. | The affected room, indoor board path, wiring route, or local component should be checked first. |
| Several rooms or the outdoor unit show the same CH193 fault. | The shared outdoor side, power path, communication trunk, or refrigerant circuit needs priority checking. |
| The fan starts slowly, stops, or makes abnormal noise. | Motor feedback, blade obstruction, and board output need to be separated. |
| The final display digit identifies the master, slave 1, or slave 2 outdoor frame. | Match 1 to master, 2 to slave 1, or 3 to slave 2 before checking the shared fault path. |
| The model belongs to VRF, Cassette, Ducted rows such as LG Multi V 5 commercial VRF. | The loaded row is source-backed by official diagnostic material. Use the matching source row before quoting parts. |
Motor or board decision
LG Multi V 5 commercial VRF CH193 is repair-first when the motor, blade, or feedback circuit is confirmed. Replacement becomes relevant only if motor or board cost is poor value for the system age.
Obstruction or loose connectors are simpler than a failed motor or board output.
Motor replacement depends on whether feedback and winding tests confirm failure.
Board replacement should follow motor and harness checks, not replace them.
LG CH193 questions
What does the LG CH193 error mean?
Can I fix a LG CH193 error myself?
Is it safe to keep running the aircon with a CH193 error?
What causes a LG CH193 error?
Will a LG CH193 error need a repair or a full replacement?
What should I send a technician about a LG CH193 error?
Confirm the fault
Share the error code, model number and symptoms so we can assess the likely cause.
Not the right code?
Browse the full LG list or check a few codes in the same fault category.
Ready to get started?
Tell us what’s going on. Symptoms, setup, photos, anything we should know. We’ll assess and come back with the right next step.
Read next
Use these if the quote mentions the parts, checks, or repair path this code points to.