Step 1 Check the heater fuse.

PS: We provide you spare fuse at the spare parts box. Please find it to replace.

Step 2  Check the Electric Relay

PS: If this step is OK, please follow step 3

Step 3 Change temperature controller

Temperature controller

1.Fix the temperature controller with screws

2.Plug the wire onto the main switch

PS: We provide you spare controller in your spare parts box, you can find and replace it.