Gefran 600 controller

Gefran 600 controller

Controller display doesn't switch on after being powered?

There is a possibility that the controller is faulty/blown. Kindly download a customer request form, complete and send to Thermon SA (Pty) Ltd. for a quote on repair.

The display of the temperature controller continuously flashes during start-up. What does this mean?

The display should only flash for the first few seconds after start-up. If it continues to flash the power supply is possibly faulty and must be repaired. Kindly download a customer request form, complete and send to Thermon SA (Pty) Ltd. for quote on repair.

How many solid state relays can I drive with a type D logic output from a temperature controller?

You may drive a maximum of 3 GTS gefran solid state relays - this may differ for other SSR brands.

Gefran controllers: LED 1 of the controller flashes on start-up. What does this mean?

This is a possible indication of an instrument that is in Soft-start mode - a function that serves to avoid thermal shock to a heating system. To check if controller is set for soft-start, follow these steps:

Gefran controller: Can the analog output on a 600-x-x-C-x-x be converted from 0-10V to 4-20mA?

Yes, although 0-10V is the standard output, the analogue signal can be changed to 4-20mA.

Gefran controller: Can the analog output on a 600-x-x-C-x-x be converted from 0-10V to 2-10V?

Yes, although 0-10V is the standard output, the analogue signal can be changed to 2-10V.

Gefran controller: I cannot access the hardware (Hrd) menu. Help!

  1. Press and hold the key until is displayed;
  2. Using the
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Gefran controller: The top display is showing Err. What does this mean?

This usually an indication of a) a faulty Pt100 or analogue signal or b) wrong sensor type or c) sensor signal is out of range or d) incorrect/damaged input connection.

Gefran controller: The top display is showing Sbr. What does this mean?

This is usually an indication of a faulty thermocouple temperature sensor (open circuit or faulty cable).

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