Hi all,
I have a TENMA 21-10115 SOLDERING STATION. I cant figure out how to calibrate it. The instructions are vague at best. The new handle/tip only comes to 150f instead of 572f. What to do? Also, does anyone know how to do a factory reset on this unit?

Thanks for any help.

 

Here is a link to the datasheet, and in the quotation below is the summary of how to calibrate it. I believe calibration is the only type of factory reset you can do.

Calibration is recommended whenever you replace the tip or heating element, though proper
calibration requires a soldering tip thermometer (not included) for maximum accuracy.

1. While the unit is power on, enter the calibration settings by holding the “*“ for 3 seconds;
“CAL” will display and a temperature variance will flash.

2. Use the “UP“ or “DOWN“ buttons to adjust the temperature variance correction; the variance
range is -50°C ~+50°C (-58°F ~ +122°F)

3. Press the “*“ once to store the calibration variance.

 

Use a thermometer....

 

...
The new handle/tip only comes to 150f instead of 572f. What to do? ...
...

That sounds like an outright FAULT, not a calibration issue.

Or if not faulty it might be incompatible.