I get a CH2 error message on my LG mini split what does this mean?

https://www.youtube.com/watch?v=sYNN1Rvc7r0

https://removeandreplace.com/2017/06/06/lg-split-system-air-conditioner-error-codes-troubleshooting-maintenance/

PDF]SERVICE MANUAL R?410A Ductless Split System Air ...

dms.hvacpartners.com/docs/1011/Public/.../42108920400_ICP_26610.p...
421 01 9204 00 1/03/13. SERVICE MANUAL ... Consult local building codes and National Electrical Code. (NEC) for special ..... 18000 (5970-22350). Heating Capacity (Min. - Max). Btu/h. N/A ..... Error Messages Displayed Front Panel. S.

Hi Anonymous,
For all wall mounted and Artcool split system codes

Error code = C1 or CH1
Flashing Light = 1
Fault = Indoor temperature sensor open or closedcircuit.
Display = Indoor.
Indoor Operation = ON

Error code = C2 or CH2
Flashing Light = 2
Fault = Outdoor temperature sensor open orclosed circuit.
Display = Indoor Outdoor.
Indoor Operation = ON

I believe the wiring may be incorrect. Here arethe fault codes.

05

Comms Error, check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V - 4 Vdc terminals 3 and 4

5

Comms Error, check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V - 4 Vdc terminals 3 and 4
Hope this helps

Bob

Always error came from room sensor and coil sensor or low gas or comp, not working

CH 33 -Excessive rise of standard compressor discharge temperature. If over 105°C check refrigerant charge. Over charged, release little gas still to normal PSI. If condenser full of debris, clean it.

E-5 -Comms Error, check your wiring, remove external pumps. Split/Multi - check volts from terminal N to 3 = 0 - 65 Vdc, Multi V - 4 Vdc terminals 3 and 4

Solution # 1, Check Condensor Fan Motor Capacitor 4uf or MFD
# 2, Check Motor Windings
# 3, Check Relay OR Defination Contactor
# 4, Check Connection Terminals

hope will help u 2 solve this

GOOD LUCK

The operating LED will be blinking 5 times, means that there is a
comunication error (serial comunication) between the outdoor and the indoor unit.