Troubleshooting4-12 Samsung Electronics■ Checklist before auto trial operation- In Auto trial operation, product will automatically select either cooling or heating mode and operate in selected mode.- AMSSSFXMSSC (Cooling Only) models operate only cooling mode in Auto trial operation.(Cooling only models don't operate Auto trial operation in case of outdoor temperature below -5°C or indoor temperature below5°C)- In the temperature range marked with slashed pattern, system protection control may trigger during operation.(If the system protection control is enabled, it can be hard to get the precise judgment after the auto trial operation.)- When the temperature is outside of guaranteed range, accuracy of judgment on auto trial operation may decrease near boarder linearea.■ Auto trial operation1. If the Auto Trial Operation is not completed, normal operation will be prohibited.- When the auto trial operation is not completed, UP (Unprepared) will appear on the segment after the communication check andrestrict compressor from operating. (UP Mode will be cleared automatically when auto trial mode is completed.)- Auto trial operation may take 20 minutes to maximum 2 hours depending on the operation status.- During auto trial operation, noise can be generated due to valve inspection.(Check the product if abnormal noise occurs continuously)2. When error occurs during auto trial operation, check the error code and take appropriate- Refer to next page when E503 error occurs.- Refer to service manual if you need inspection or when other errors occur.3. When auto trial operation ends, use S-NET pro or S-CHECKER to issue a result report.- Refer to service manual for further actions if you have any items with "inspection required" sign on the result report.- After taking appropriate measure for the items with "inspection required" sign, run the auto trial operation again.4. Check the following items by running trial operation (cooling/heating).- Check if cooling/heating operation performs normally.- Individual indoor unit control: Check for air flow direction and fan speed.- Check for abnormal operation noise from the indoor and outdoor unit.- Check for proper draining from the indoor unit during cooling operation.- Use S-NET pro to check the detail operation status.5. Explain to the user how to use the air conditioner according to the user's manual.6. Hand over the installation manual to the customer so they can keep it with them.How to initiatePress and hold the K1 tact switch 1 time.Etc. Make sure to close the outdoor unit cabinet during operation. If you operate the unit withthe front cabinet open, it may cause damage to the product.4-1-2 DVM S Eco Model EEPROM Code TableNo. Model Name EEP Code1 AM100KXMDGH DB82-03361A2 AM120KXMDGH DB82-03362A3 AM140KXMDGH DB82-03363A