Is the tip temperature lower than the set temperature? If you feel that solder does not melt easily

If consumables parts have deteriorated and the enclosure pipe and nut are rusted or deformed, the temperature may appear lower.
Perform maintenance on the parts or replace them with new parts.

After replacing parts, please check if the set temperature and actual tip temperature match with a thermometer.
If they do not match, please adjust the temperature in the adjust mode.

Maintenance of a soldering iron with a separate type tip and enclosure pipe
Does not the set temperature match with the measured temperature? How to adjust the temperature for FX-888D (Adjust mode)

The temperature may be set in the adjust mode(temperature adjustment).
Please adjust the temperature again in the correct way.

Does not the set temperature match with the measured temperature? How to adjust the temperature for FX-888D (Adjust mode)

If you have a temperature-controlled soldering iron, we recommend measuring the tip temperature with a thermometer before operation and adjusting the temperature as necessary.