CI have a Phillips Hostess executive trolleyType HO 109MH. The electricity goes to the trolley red light is on but no heating to top and bottom sections of trolley.

Your wiring diagram and parts schematics are here in the link below. Normally the bottom element does glow read hot after a couple of minutes. Broil elements last a lot longer because they aren't used as much. There is only one Control Board. If I was guessing, I would say the temperature sensor is at fault. Elements either work, or they don't, but you can easily test continuity with a meter. Many parts are discontinued.

https://www.searspartsdirect.com/model/3f7nkrfnvp-001428/frigidaire-pleb30t8ccb-electric-wall-oven-parts

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Yes two red flecked on same terminal and the black flecked on the other side terminal of the element. Bobs your Uncle......HEAT! Make sure they are a tight fit. New spades if required.

Hi,
If your electric oven is taking too long to heat or just not heating up right,then check out this tip that will give more detail about your problem.

Oven Problems Electric Oven is Heating Slowly or Poorly

heatman101

If the red light does not come on, then this suggests that the oven thermostat or control switch is fault.
Even if the element was faulty, the red light shuld still come on.

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Hi,
Check out this tip that I wrote about this problem...

http://www.fixya.com/support/r4511800-oven_problems_electric_oven_heating

heatman101

Hi,
If your electric oven is not heating then you probably have a bad heating element in your oven. This is not that hard to fix yourself...
Check out this tip that I wrote about the Oven not heating problem..

Oven Problems Electric Oven is Heating Slowly or Poorly
http://www.fixya.com/support/r4511800-oven_problems_electric_oven_heating

heatman101

Usually, when an oven won't heat, it's because the bake element is burned out. The bake element is the black, pencil- thick tube at the bottom of the oven. When the oven heats, the element glows red. This element has an expected life-span of several years. It may last for only one; it may last for many more. When the element burns out, you need to replace it.

check the bottom heat element and see if you see any burn out spots on it,if so you will have to replace it(easy)let me now-mike

Most modern gas ovens and many broilers use a "glow-bar" style of igniter that glows red-hot to ignite the gas. If the igniter doesn't reach the proper temperature, the gas valve won't open. You may need to replace the igniter.