1. If the motherboard can be turned on and powered on, but the lamp tube is not on, it may be a poor contact or the lamp tube is broken and needs to be replaced.

There is no temperature, it may be leaking and needs to be replaced.

2. If the indicator light on the plug-in power cord is not on, it means that the problem of no power supply is more complicated. Some common problems are short circuit of the circuit board or a component.

The equipment is burnt out or the power cord is disconnected.

For any of the above reasons, you need to contact the seller to let the maintenance professionals do professional things.

Source: Rong Gui Delia Electric Appliance Co., Ltd.-specializes in producing optical wave furnaces and ceramic electric furnaces.