Y have difference of 70 degree less in oil at the computer and the temperature probe its new ex:at 350 setting ,the oil is 280 f
Hello. Usually the problem lies in the wiring to/from the probe, the connection points, or the interface board, and I have even seen the harness between the computer and interface board have a problem. The probe has a specific resistance at a specific temperature, so cause resistance anywhere in the circuit, and you now have a different reading on the computer, or so it thinks. I hope you used a pin pusher, and didn't cut/wire nut the probe wires, because you just added a lot of resistance to the circuit. The probe should read 1654 ohms at 350 deg., but your only getting 280 deg. so, the probe would be 1514 ohms.
I have no way of knowing at this point if you have the old interface board, or the new, so I will give you the pin test points for the new one, disconnect your computer, and on the relay board, there will be 12 points with a label for J2, pins 11 & 12 should be for the probe, from the back to there. If the readings are not correct to that point, then you have wiring, or problem with the interface board, if they are, then the interface cable to computer, or the computer.
You can go to www.frymaster.com, download a service manual, and do some snooping, but they don't tell you everything, like those resistances.
Hope that helped, and thank you.
If you need further help, "ask me"
Apr 19, 2009 |
Frymaster Dean H17-SC Deep Fryer