Possible causes of the red light flashing:

• Unit is overheated. Always allow 20 seconds between seals. Under heavy usage, appliance will shut off automatically and Red Light will flash. Wait for 20 min. for unit to cool off.
• Latch has been left in OPERATE position: Gaskets may be compressed. Unlatch and allow 10 to 20 minutes for Gaskets to expand.
• Vacuum pump running more than 120 seconds. Under heavy usage, appliance will shut off automatically and Red Light will flash

Possible causes of the macine not vacuuming:

• If making a bag from a roll, make sure one end of bag is sealed.
• Adjust the bag and try again. Make sure the open end of the bag in down inside the vacuum channel.
• Check for wrinkles in bag along Sealing Strip. To prevent wrinkles in the seal, gently stretch bag flat while inserting bag into Vacuum Channel.
• Open unit and make sure Gaskets are inserted properly and there are no foreign objects, dirt or debris on the Upper or Lower Gasket
• Latch has been left in OPERATE position: Gaskets may be compressed. Unlatch and allow 10 to 20 minutes for Gaskets to expand.
• Make sure the accessory hose is not attached to accessory port.
• Make sure the lid is latched down all the way. If the Latch does not catch the lid and bring it down, there will be a leak between the Gaskets.