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You turn the valve knob to "Pilot", push it in, and light it (use a long butane lighter-it's easiest) and keep the button pushed in for 20 seconds-1 minute. If the pilot stays lit, turn the dial to "On".
Check the gas pressure, it must meet the standard gas pressure written on the nameplate. Check also the quality of pilot flame, poor pilot flame quality will not properly heat up the thermopile which in turn will result in poor fryer operation.
Make sure the knob on the gas valve is turned to the ON position after lighting the pilot. If the fryer won't come on....
1. The pilot flame may be weak causing low millivolts.
2. The thermostat is failing.
3. The pilot flame may be good but the pilot generator may be weak causing low millivolts.
As this unit operates on less than 1 (one) volt DC.... you can try to jump the thermostat leads on the gas valve to see if it comes on. If it does... change the thermostat.
CFG error on controller board can be cleared by resetting the controller back to factory setting and by doing this, all program added after the factory setting will be erased so you have to reprogram them again. Programming guides are downloadable at PITCO site on http://www.middleby.com
Most fryers have pilot lighting instructions on the inside of the door. If yours doesn't then find the gas valve, turn the knob to the pilot position, push in on the knob and light the pilot. Keep the knob pushed in after you lite the pilot for at least another 30 seconds. The pilot should stay lit.
Assuming that the pilot is lit, when you turn the thermostat from off to the operating temperature, you should hear a click at some point. If you do not, the thermostat is defective. You can also double check this by detaching one of the two wires going to the thermostat and measuring for continuity between the two terminals. At off it should show no continuity. At 200F or above it should show continuity. This is the most common problem.
If the pilot will not stay lit or if it goes out when you increase the thermostat setting, it is usually a defective or weak thermopile (or thermocouple), or a defective gas valve. If replacing the gas valve, I recommend replacing the thermocouple or thermopile at the same time.
Restate your problem if the pilot won't stay lit or if it goes out when you turn the thermostat up.
The thermocouple or thermopile is your culprit. If it is not sending the correct millivolt signal to the main part of the gas valve telling it to open then, the burners will not light. This is the cheapest part to start with. If after changing this out & you have the same problem then, you have a bad gas valve.
If this is a milivolt unit, meaning no solid-state or computer/digital controlled. You would need to turn your gas valve to the pilot position, then press in and hold until you can light the pilot using a lighter (this may take several minutes, to bleed the air from gas supply) once there is a pilot flame present, you will need to hold the valve button in for about 45 seconds to heat the thermalpile. Once pilot is lit, thene turn to on position and proceeed to turning thermostate to set temp.