Zhonghui Electric Technology Co., Ltd.

Fuser Thermistor

The printing problem sometimes can be caused by printer thermistor errors. Printer thermistor is a semiconducting device that has electric resistance when it comes up to a certain temperature. If such a component doesn't work, the fusing unit will be overloaded with electricity, further more, will overheat and cause to the fusing components and circuit can not work normally.

When the upper fuser roller of your printer gets overheated, or the warm up time are lasting, it may caused by that the printer thermistor fails to work, please check if the thermistor and upper fuser roller are dirty or stained, if so, just clean it out and recheck this process, or just try to replace it if still fail to solve the problem.
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