Error Code F-9 Sears Microwave Model 721.64683300

Hi ess0,

The Amana error code F5 means that you have a failed Electronic Range Control (ERC. The only way to resolve this problem is to have the Electronic Range Controller be replaced. You may contact Sears for the replacement part at 1-800-252-1698; M-F 6:30 AM-10:30 PM - Sat 7:00 AM-9:30 PM - Sun 7:30 AM-9:30 PM - All times Central.

Hope this helps.

Thank you for using FixYa.

Hi maaki41,

The error code SE stands for a keypad is held down for longer than 10 seconds. If you were not holding down a button then you have a defective key pad because of the sensor error. You may contact Sears for the replacement part at 1-800-252-1698; M-F 6:30 AM-10:30 PM - Sat 7:00 AM-9:30 PM - Sun 7:30 AM-9:30 PM - All times Central.

Hope this helps.

Thank you for using FixYa.

Hi ejv3968,
This means that you have a control board failure. Error code F5 can only be fixed if the control board (ERC) is replaced. You may contact Sears for the replacement part at 1-800-252-1698; M-F 6:30 AM-10:30 PM - Sat 7:00 AM-9:30 PM - Sun 7:30 AM-9:30 PM - All times Central.
Hope this helps.
Thank you for using FixYa.

Hi hoodrd,
If you are encountering F4 error code from your Amana oven this is because you have an Open Oven Temperature Sensor. This error requires a replacement of new oven temperature. You may contact Sears for the replacement part at 1-800-252-1698; M-F 6:30 AM-10:30 PM - Sat 7:00 AM-9:30 PM - Sun 7:30 AM-9:30 PM - All times Central. Just get your model number ready when you call.
Hope this helps.
Thank you for using FixYa.

From everything I have read it is a 1100w inverter, I am having the same problem.

My guess is that it is the main transformer that has developed a fault. If the insulation has broken down - it will arc there instead of the magnatron. Or it could be the magnatron itself. Both are prime suspects - and expensive to replace.

Unless you are particularly attatched to this - I would buy a new unit - and sell the turntable plate to recoup your losses.

Hi,
F-9 error code indicates a defective control board, inverter or line voltage too high. f the microwave runs for about 7 seconds with a ticking sound..then stops and shows "F-9", it is the magnetron that has failed. The fact that the unit starts and runs with the TICKING SOUND means the control board is sending signal to inverter board and the inverter board is sending signal to magnetron. Magnetron is covered by full 5 year warranty, inverter board is only 3 years.

If this is a "SmartWave" branded microwave oven then F9 is an error that indicates an inverter board or magnetron has failed. Either way.. Try this...With the F9 error cleared, start the oven and listen for a ticking sound. The inverter will attempt to 'fire' the magnetron 5 times.(ticking sound). If can hear ticking, replace magnetron....Else in may be a door switch problem

F9 code can mean something different depending upon the particular model.....
1.) IF your Microwave uses "UltraWave technology"/"SmartWave technology"...Then either the Magnetron has failed or the Inverter board has failed OR maybe the control board has failed (HUH?).
2.) IF your Microwave does NOT use "UltraWave technology"/"SmartWave technology" then one or more of the door switches has failed.

** "UltraWave technology"/"SmartWave technology" **
I'll explain a few things about this wonderful technology...
The control board (accepts the pushbutton commands) has to talk to the inverter board to tell it how much power should be applied to the magnetron. The inverter board will then power the magnetron and inform the control board if the magnetron is working OK.
If there is something wrong with the magnetron or inverter board or a there is a communication breakdown between the control board and the inverter board...WA-LA-----F9----

A pretty reliable test for the Magnetron is to operate the oven and listen for a ticking sound 5-6 times about a second apart. If you can hear the ticking....The magnetron has failed..if no ticking, the control or inverter board failed.

Note: This 'technology' may come in other flavors as well

We'd need the full model number to be sure, but it sounds like an inverter failure. Due to the lethal voltages involved, I do not recommend that a person without training and experience ever work on these models. I would call Sears for service. See http://www.sears.com