Teqd-2301b Manual -

Disclaimer: This manual is a guide based on standard specifications of the Teqd-2301b

Connect to the relay contact output (3A/240Vac). 4. Operation Instructions

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Clean the sealing bands and verify that no plastic debris is stuck to the heating blocks.

Test pins 1 and 2 with a multimeter for 110V/220V. Replace any blown internal ceramic or enclosure fuses. Internal control relay welded shut, or failed sensor. Disclaimer: This manual is a guide based on

The back panel features standard industrial screw terminals. Wiring assignments must be checked against the label on your specific shell, but generally conform to the standard structure below:

Verify if the main power indicator LED on the TEQD-2301B is illuminated. If dark, check the machine's fuses and external voltage line. Test pins 1 and 2 with a multimeter for 110V/220V

| Error Code | Meaning | Solution | |------------|---------|----------| | Err2 | Sensor open circuit | Check thermocouple continuity. Replace if broken. | | Err3 | Sensor reverse polarity | Swap the two sensor wires. | | Err4 | Input signal out of range | Verify 4-20mA loop is not shorted. | | Err5 | Output current overload | Reduce load; check for short across output relay. | | EE.rr | EEPROM write failure | Contact manufacturer – internal hardware fault. |