Westinghouse freesyle 558 oven will not start after blackout. have lost instruction book. '0.00 auto' is flashing on timer screen. hotplates and grill working

Try turning off the circuit for a minute, then set timer again.
Often a little picture/icon of a "baking tray with heat" when timer is passing power on to the thermostat.
Also, those timers fail often enough, is the oven brand new (or recent blackout)?

When this occurs the problem is always with the hotplate controllers. Has this happened to all hotplates at the same time or has it occurred over a certain time period?

This solution only really applies to oven elements only. I haven't experienced it with hotplate elements as they are not normally controlled by the timer. When you have an electronic timer and there is a blackout the timer normally reverts to auto. function when the power comes back on. You have to set it back to manual before the oven will work. Turn the oven element to ON and the set it to manual. The oven element indicator light will light and the oven will work.

You posted under Westinghouse outdoor timer with 3 outlets and 6 buttons'
Westinghouse has 2 different manuals:
http://waterheatertimer.org/pdf/T28499_TimerManual.pdf
http://waterheatertimer.org/pdf/Westinghouse-T28011_Manual.pdf

3-outlet outdoor timer
http://waterheatertimer.org/Woods-timers-and-manuals.html#6-week

Westinghouse toll free number
Toll Free 1-800-730-3707

Westek TE06WHB timer
Utilitec TE06WHB timer
Woods 59377 are identical timers
http://waterheatertimer.org/Woods-timers-and-manuals.html#59377

Woods 59377 manual
http://waterheatertimer.org/pdf/Woods-59377.pdf

Written instructions:
http://waterheatertimer.org/How-to-program-Utilitec-0155671.html

If 1 of the plates is not working at all, then it is going to be the plate itself, or a faulty regulator, you will have to take it apart to check the plate.
The other plate that you cannot control, needs the regulator replacing.

If it has a timer, make sure that it is set to manual,and not on auto, as it it will not come on if it is on auto, sometimes indicated by flashing display.

http://www.thencc.com/westinghouse/LS/Instruction/28499_TimerManual.pdf This is the manual that you seek!

This is how I reset my U1420NOGB/FD7907 NEFF double electric oven that I inherited also without an instruction book.
There are 4 buttons in a row and then a timer knob that moves left and right.The first button is black,second has an arrow,,third has an arrow and fourth a hand symbol on it.Hold down together, the black button and the arrow button next to it.Without releasing either,twist the timer knob clockwise(to the right)until correct time is showing.Do not release the other buttons at all ,until time is ok.If you miss correct time keep going ,dont go backwards.When time is correct,,release black and arrow buttons and auto will stop flashng ,and oven work.If auto doesn,t stop flashing at this point press the button with hand symbol (manual)on it once.

Call 1-800-252-1698 and give them your entire model #.