The Megger MFT1720 Multifunction Tester is a versatile tool designed for DIY enthusiasts and professionals alike, offering a range of functions for testing and troubleshooting electrical systems. However, this model has been displaying an error 22, which may impact its accuracy and reliability otherwise working correctly. As a trusted brand in the industry, Megger is known for producing high-quality testing equipment, making it. important to address this issue and ensure the continued performance of the MFT1720 Multifunction Tester. Has no test leads but includes plug socket lead.