I have recently bought a Weller 201 soldering iron, but in a very short space of time out of 2 projects it has made the glass crack in 2 out 3 projects. Could it be getting too hot.

Question edited for clarity.

Weller Tech Sheet WTCPR.pdf

University of California San Diego https://neurophysics.ucsd.edu > Manuals
Power Unit Size 4-7/16" x 7-3/8" x 3-5/8". Six (6) Foot, 3 Wire Power Cord. 4. *. SOLDERING PENCIL: Soldering Pencil Wattage 48 Watts. Tip Voltage To Ground ...
4 pages

Weller Tech Sheet

UserManual.wiki https://usermanual.wiki > Manual > WTCPRTec...
If magnastat switch checks good, check wiring for continuity. Re- fer to schematic. C. TC202/TC202D Power Unit Troubleshooting Guide. (No 24 VAC at Pin 1 ...

Vintage unit

https://www.google.com/search?q=Tc202+power+unit

..

If this is the dual trigger Weller gun and your tips are held in place by either set screws or by locking nuts, Just loosen both of the parts that are holding the tip to the gun and then retighten them back up. Soldering iron tips that appear to be tight might not be and this will insure that the tip is indeed tight and also cleans up the connection of the tip to the soldering iron. Oxidation from heating and cooling will cause a tip to not get very hot. Loosen the tip holder and then retighten it. Hope this gets you going again.
Dennis

Here ya go. Page 3 http://www.weller-toolsus.com/MagentoShare/media/mannuals/WTCPT_OI_PL.pdf

Just press UP/DOWN at the same time quickly. If you hold them down you will get to the menu but just pressing them and releasing them will turn the station back on.

The TC201Z is a zero crossing switch version of the TC201T. The two handles use the same tips which are the Weller PT series.

Take it back to the dealer who sold the iron to you. If the normal channels did not work, let him sort it out.

It may be possible that the voltage
input is low it will affect the
temperature.if not change the
thermostat

hi friend,
check this out
Consider the wattage of the soldering iron. A good soldering iron will have wattage of 80 to 150. A wattage of lower than 80 is not ideal for stained glass. You need a soldering iron that will melt the solder fast enough for your project. Consider the type of temperature control you want. Some irons will have a temperature control built in the tip. When the temperature drops, it will turn on and when the temperature is reached, it will turn off. Other soldering irons have a built-in rheostat. You control the temperature by turning the dial up or down. A separate rheostat can be purchased to plug your soldiering iron into. Rheostats are highly recommended. This lets you match your temperature to your soldering style and allow you to do decorative effects.

Step 2 Consider the heating element. There are two types of elements, ceramic or wire-wrapped. Ceramic core irons maintain heat more efficiently than wound wire heaters. In a ceramic core, the heater core extends into the tip for faster heat transfer. This will keep the tip hot for a longer period so you can work quickly and faster. Ceramic irons maintain their temperature longer and heat up within 30 to 60 seconds.

Step 3 Consider the weight of the soldering iron. You want a soldering iron that is lightweight and balanced. You will have less fatigue when using a lightweight soldering iron at long stretches of time. Check to see if it fits your hand comfortably. Check to see if it has a good rubber cushion for your hand.

Step 4 Check for the ease of changing tips on your soldering iron. When soldering stained glass, you want to match your tip to the technique you want to use. There are a variety of tips on the market for soldering irons, and you want to be able to change them easily.

Step 5 Check the soldering iron to see if it has a heavy-duty cord and a three-prong plug. You want a grounded three-prong plug to prevent the possibility of shock.

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sivaranjini

That would be correct.