
Installing Oztherm F330/F430/F431/F311 SCR Controllers
, by Daniel Rehe, 2 min reading time

, by Daniel Rehe, 2 min reading time
Full Controller User manuals can be downloaded here
For 4 wire loads, a special -FW version needs to be specified at the time of order
For 3 wire loads connect L1,L2,L3 only
If thermal overload occurs you need to disconnect EN and G terminals and reconnect to rese the circuit
If you do have feedback option such as C, CC, CE, CCE, or PW and you can not get the full voltage output then you may need to adjust the limit pot clockwise further in order to increase the feedback gain.
If the controller trips at start up then you may need to adjust the trip pot clockwise until it does not trip. If the controller still trips then they may be short in the system which could be heating element or SCR itself of faulty Controller PCB.
Once the controller is giving full output you can now adjust the limit and trip to where you want it to be. We normally supply the controller with limit set to 1/4 turn above the maximum setting and the trip pot 3/4 turns past the maximum.
Note: once the controller trips the EN and G needs to be removed and re-applied (or power can isolated and re-applied)
For further clarification please contact the friendly Fastron technical team