Hello I have a problem with my GE JTP15 I got an f 2 code oven would switch from bake to broil replaced the sensor now the oven wont heat on bake or broil Checked the points they are switching from bake to broil all lights clock and timers work but no heat like there is no power to the elements Is the control unit bad

Hi.

F2 is displayed when the ERC (the control board) detects a sensor impedance corresponding to temperature above 615F-630F. This may happen either because sensor is open as it has blown, because wiring from sensor to ERC is broken, or because ERC is defective. Before replacing the ERC check the wiring from temperature sensor. The test is done using a multimeter set on impedance. Disconnect power first, touch with one of the multimeter probes one of the sensor contacts, find which of the contacts on ERC shows continuity (low impedance- not open or infinity) between sensor contact and contact at board. Test also the thermostats(the temp.sensors) just to know if any of them is bad (including the old one). A good thermostat for this oven will read about 1080 Ohms at room, at 800 degrees it will read about 2600 Ohms (test it only at room temperature). Go for the ERC if wiring and thermostat are OK. Before replacing the ERC test also wiring to element in the same way you did with temperature sensor wiring. Test also the elements, just in case. They must be from 30 to 80 Ohms.

Regards.

Ginko