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Start the pilot and hold the valve knob in. If the millivolt reading is less than 15mV, replace the thermocouple. b. Defective valve. If the thermocouple is producing more than 15 millivolts, replace faulty valve. 3. The pilot is burning, there is no gas to the burner, the valve knob is in the ON position, and the ON/OFF switch is in the ON position. a. ON/OFF switch or wires defective. Check the ON/OFF switch and wires for proper connections. Place the jumper wires across the terminals at the s