I was able to replace parts on the circuit board (P/N: 128301_timer_pcb) to fix this issue on my KCO253CU Kitchenaid Toaster Oven. R1 was visibly burned. On further troubleshooting, ZD2 was found to be shorted.
Known Failed Parts Replaced:
R1: 47 Ohm 2 Watt resistor
ZD2: 47V Zener Diode
Other Parts Replaced
C1: 1.5 uF 400 Volt Film Capacitor
ZD1: 5.1 V Zener Diode, tested OK but replaced anyway.
See attached photo of circuit board for component part numbers.
John W.
Kitchen aid will not help, will not sell the part and will not give you a part number for ordering.
the part that goes bad is one of the 2 piggy back function switches. it gets hot from electricity and deforms the plastic causing the connection inside to fail.
I traced all the wiring and made a schematic to use for testing. Kitchen aid refused to even talk about it, so what I share is from my own experience.
By the way, I could not find this part (fz31-9) other than in china and it has a specialized cam inside and 5 connectors. there are 8 that match and not knowing witch cam, makes it very difficult to guess.
the attach diagram worked for me, but it man made and could contain errors.
It sounds like your KitchenAid toaster oven may be experiencing a malfunction. The blinking blue light could indicate an error code or issue with the oven's control panel. Without more information about the specific model and the exact behavior of the blinking blue light, it is difficult to provide a specific solution. However, you may try unplugging the oven for a few minutes and then plugging it back in to see if that resolves the issue. If the problem persists, it would be best to contact KitchenAid customer service for further assistance or consult the oven's user manual for troubleshooting tips.
It sounds like there may be an issue with the function control knob on your KitchenAid toaster oven. If the knob will not turn and no power light comes on, it could indicate a problem with the knob itself, or a more serious issue with the oven's internal electrical components.
Here are a few things you can try to troubleshoot the issue:
Check the knob for any physical damage or debris that may be preventing it from turning. Clean the knob and the surrounding area if necessary.
Check the electrical connections for the knob. Make sure that the connections are securely in place and that there is no damage or corrosion.
Check the power outlet. Make sure that the outlet is working properly and that there is no issue with the circuit breaker or fuse.
If the above steps don't solve the problem, it could indicate a more serious issue with the oven's internal electrical components. It's recommended to contact the KitchenAid customer service or a professional technician for further assistance.
It's also important to check the oven's warranty status and the manufacturer's instructions to ensure that the repair or replacement will not void the warranty.
Keep in mind that troubleshooting and repairing electrical appliances can be dangerous if you are not familiar with the proper procedures. If you are not comfortable with performing the troubleshooting yourself, it's best to contact a professional technician for assistance.
I was able to replace parts on the circuit board (P/N: 128301_timer_pcb) to fix this issue on my KCO253CU Kitchenaid Toaster Oven.
R1 was visibly burned.
On further troubleshooting, ZD2 was found to be shorted.
Known Failed Parts Replaced:
R1: 47 Ohm 2 Watt resistor
ZD2: 47V Zener Diode
Other Parts Replaced
C1: 1.5 uF 400 Volt Film Capacitor
ZD1: 5.1 V Zener Diode, tested OK but replaced anyway.
See attached photo of circuit board for component part numbers.
John W.
I was able to replace parts on the circuit board (P/N: 128301_timer_pcb) to fix this issue on my KCO253CU Kitchenaid Toaster Oven. R1 was visibly burned. On further troubleshooting, ZD2 was found to be shorted.
Known Failed Parts Replaced:
R1: 47 Ohm 2 Watt resistor
ZD2: 47V Zener Diode
Other Parts Replaced
C1: 1.5 uF 400 Volt Film Capacitor
ZD1: 5.1 V Zener Diode, tested OK but replaced anyway.
See attached photo of circuit board for component part numbers.
John W.
Hello, this is Ava with Think Crucial.
You may find the User's Manual for your Kitchenaid model by clicking the link below.
https://www.kitchenaid.com/shop/-[KCO222OB]-400033/KCO222OB/
You can purchase a wide variety of high quality appliances replacement parts direct from Think Crucial with free shipping and an exclusive 10% coupon for Fixya.com readers, use code: FIXYA10
https://www.thinkcrucial.com/collections/appliances
I hope this was helpful.
Ava B.
Think Crucial Customer Care
http://www.thinkcrucial.com/
Before you even start, most manufacturers are using special fasteners that cannot be unscrewed with standard homeowner tools. Make sure you can remove the 4 screws on the bottom to get the unit open. These appliances are meant to be disposable - even the expensive KitchenAid, Krups and Brawns.
If you do get it open, a heater wire is likely the cause of your troubles. The wires are heavy gauge (12 gauge) meant for high temperature. They are crimped onto a spade-type connector or crimped directly to a copper plate on the toaster because solder is not good near food or near high temperature connections like this.
It may look like the wire connecting to the elements is connected and ok but the strands the black casing are likely fried. Use a volt meter to check.
It is rare that the circuit board goes bad. If it is bad, there are no replacement parts available that i have ever found for these appliances so there is no point trying to fix it. The panels on the expensive toasters have on-board temperature sensors and even light sensors to "see" how browned the toast is getting. Unfortunately, these have microcontrollers that are programmed at the factory so you cannot replace it with a generic microcontroller (without figuring out the circuitry and writing your own program to control the toaster).
You do not give much information so here is what I suggest not knowing what you have tried. Set it to a lower temperature and cook it for a longer time. Usually slower cooking makes things tender and still keeps them moist. Also, find a good marinating sauce or tenderizer to use before cooking.
Assuming you are referring to a Kitchenaid countertop oven, I would advise you to call Kitchenaid Customer Service. They will be able to send you a replacement function knob at no cost.
Their toll-free telephone number is 1-800-541-6390.
