I purchased a SYL-2352 PID controller from Auber Instruments 11/29/2010 and assembled a SSR temperature controller for a lead casting pot. It worked fine for several months. Recently it has failed. I have gone through the diagnostic tests at the bottom of page 8 in the manual and all indications are the PID controller itself is defective. I have built several since and this is the first one to have failed.
When first powered on the temperature reading is at ambient in degrees F. Within a few seconds the temperature reading starts to decline and bottoms out at -228 degrees and the bottom display flashes orAL.
I have two different thermocouples, type K and the controller reacts the same with either thermocouple. Per the manual section 8 trouble shooting; I did verify parameter setting Sn is set to 0 then disconnected the thermocouple from terminals 4 and 5 and connected in a short piece of copper wire. When powered on the controller goes through the same sequence.
The warranty on the PID controller is 90 days. Anyone else have this situation?
DougF