PURn was overpressure[Error Code:2218 2219 2220 2221]

Excessively high pressure is applied to the purge line.

• Check that the purge line is not blinded. 
• Do not open or close the main valve of the supply gas during AFC operation.
• Restart the GC with the gas supplied.
• Check that the gas supply pressure is within the range below. 
• Check that the gas supply pressure is stable.

If the error appears repeatedly even after checking the above, turn off the main power of the instrument, stop gas supply, and contact your Shimadzu sales/service representative.