By
eHow Home & Garden Editor
Difficulty: Moderately Challenging
Things You’ll Need:
- Volt-ohm meter
- Small, soft brush
Step1
Check the circuit breaker on your convection oven's circuit to make sure it is working properly. If you have more than one appliance running on the same outlet as your convection oven, try running your convection oven by itself.
Step2
Test the switches on your convection oven with a volt-ohm meter. Remove the door and shelves from your oven and remove the screws behind the timer knob and around the edging to lift off the control-panel housing. Set your volt-ohm meter on the RX1 scale and touch the probes to the terminals. Your meter should read high ohms with your switch on broil and should read zero if your switch is on convection. If it doesn't, your switch needs to be replaced.
Step3
Check out the internal components on your convection oven by removing one lead from the cutoff and setting your volt-ohm meter to RX1. Touch the proves to the terminals. Your meter should read zero ohms. If it reads high ohms, you need to replace your cutoff.
Step4
Check the timer on your convection oven by removing one of the leads and clipping the probes on your volt-ohm meter to the terminals. You should show high ohms. If you have your timer on in any position, you should get a reading zero ohms. If you don't, you should replace your timer.
Step5
Evaluate the fan thermostat by disconnecting a lead and touching the probes of your volt-ohm meter to the terminals. When your convection oven is cool, your meter should show high ohms. Try heating the bi-metal arm with a hair dryer. Check your terminals again, and your volt-ohm meter should move to zero.
Step6
Brush away any debris or dirt that may have gathered around the fan or motor. If your oven isn't heating properly or if your fan doesn't work, this very easily could be the problem. Debris reaching the motor through vents in the housing can block the fan. Use a soft, small brush to remove the dirt.
