AOYUE 852A++ Solder gun – hot air

aoyue852aplusplus – pdf manual for gun

RECOMMENDATION: When adjusting the temperature, it is strongly advised to increase the airflow level first in order to manage the temperature. Excessive heat may damage the handle and heating element of the equipment.

SRA solder: Tel: 508-668-6044    Mon-Fri 9am – 4:30pm

Need to ask them if there is a better replacement heater and also describe my symptoms – gets hot at first then cools down after about 5 minutes of use. then does the same everytime.

I don’t want to buy heaters for this thing all the time. Maybe there’s another problem?