Without the manual, you might struggle with:
Press and hold the Set key for more than 3 seconds until the first parameter code ( F01 ) appears. Parameter Settings and Configuration Stc-600 Temperature Controller Manual Pdf
If the above methods don't work, try these search queries: Without the manual, you might struggle with: Press
: The temperature has exceeded the maximum allowed high limit, or the sensor is faulty. LLL (Flashing) Without the manual
The ambient temperature is higher than the sensor's reading limit.
If you have the PDF open, you will find this troubleshooting table. Here is the plain English version: