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The speed module is very simple: a triac with some extra components to modulate it, it's build exactly the same as the one from a vacuum. That speed module is controlled from the touch screen - are you sure the touch screen is operational? That's relatively easy to test - just put a potentiometer where the control signal goes and see if moving the potentiometer changes the speed.
The screws by the lights probably only hold the fixture in place. If you took the screws out you would only get access to the fixture and maybe some wiring. If you have already replaced the lights you can assume its not the fixtures. Not likely both fixtures failed at the same time. The common problems would be the light switch. You would need to gain access to the switch and then check that for power.
You already know house power is good because the fan is working, But since both lights failed and new bulbs don't fix the problem it would most likely be a switch.
According to their website it looks like that whole front panel should come off including the fixtures and the switches.
MAKE SURE THE POWER IS TURNED OFF......REMEMBER THE FAN WON'T WORK IF THE POWER IS OFF.
Once you remove that you can check the wiring harness for the lights. You may also see wire nuts on the harness double check those as well.
Had same problem & fuse fixed it.
Before buying a new control board (approx $160), check the 3 amp fuse located on the inside of the vent on the control board. You have to take the light/bottom housing & black plastic air chute off to see control board/fuse.
Skip, best guess...either the motor is bad or there is a circuit breaker in the unit which is popping. With the power off, open the unit and try to turn the fan by hand. If it turns hard, the motor is shot. If not, find that breaker and get a new one. They do wear out. You'll probably find it in the housing. They are often small boxes with a wire going in and another going out leading to the fan motor.
Sounds like a motor problem...but not necessarily. Cut power to the unit. Expose the motor assembly. Turn the fan by hand...if it is jammed or hard to turn...replace that motor. Not that? There is likely a motor connector. Get a test light at the hardware store. Disconnect the motor and then probe the wires coming to the connector from the power side (with the power on again) to see if the tester glows. Yes...bad motor. No, find the bad connection. It is possible that this unit uses a multi switch...if that's the case, there will be three wires coming out of it...One is power in...the others go to the light and the fan. Then, the switch will be the culprit. Hope this helps.
kerry, does it make any difference if you hold that button or not? If so, the switch set could be bad. Any odd noise from the motor? The motor might be bad. Power off. Then, remove the filter and try to turn the motor by hand. If it turns hard, it's the motor. Easy, then replace the switch. Check the electrical connections to the unit. There should be a box somewhere inside the housing. It is possible that wires have come loose. Again, do this part with the power off.
often these motors have a condensor on the side - a bit like a cross between the little white cylinder in a flourescent light housing and a starter motor - they are a bit vulnerable but are pretty cheap and easy to replace.
Sounds like that is the problem - little click is it trying to start but not getting the extra help from the condensor.
any good electrician should be able to fix it quickly, unless a part needs to be ordered in.
he should also check if there is a fuse inside, and if the main part of the motor is ok. If the motor has died completely (which is rare) then it is still probably worth replacing, but might be a but costly. also there could be a relay connected to the switch (a way for a small switch to transfer heavier current to something) - and sometimes these can also fail. Also easy for an electrician to check and fairly cheap to replace.
some motors also have a thermal protection device, which may be able to be reset by pressing a small button on the side somewhere, also possibly faulty and cheap and easy to check/replace. if you can look at the motor easily, just see if there is a small plastic push button switch (almost certainly connected to the body of the motor somewhere) if so, make sure the power is off, push it in and it should click to an "in" position. Might solve the problem.
If you get a guy in to look at it and he is struggling to find the parts, please post again and we can try and source them online for you.
If you fancy trying it yourself then post again and we can try and talk you through it, not TOO hard but you would need a bit of electrical knowledge and tools.
Hope this helps :)
Diana, the tech sheet I have states that if the unit has a power interruption, reset the house circuit breaker to the hood, if made before 2001. If after 2001, serial number beginning with DA press the start button to reset the hood. Let me know if it worked, Catriver..post back.