Westinghouse PAK806W ceramic cooktop. 3 of the hotplates only run on hi cannot regulate temperature. Control Knobs working ok how can this be fixed

limited info generic answer check that control is mounted correctly test selector with a meter most likely its failing

There is a wide variety of replacement and universal knobs available it the correct ones aren't available as spare parts from the manufacturer. Below is the link to an internet search I did...

https://www.google.co.uk/search?q=Replacement+appliance+knobs&rlz=1C1CAFB_enGB673GB676&oq=Replacement+appliance+knobs&aqs=chrome..69i57j0l3.29264j1j8&sourceid=chrome&ie=UTF-8

That could happen if the pans are not compatable with the unit.

one of your thermostats has stopped working. no easy fix. you can just disconnect the plate and work without it.

Hi,
Here is a tip that I wrote to help people troubleshoot problems with their cooktops not igniting.

Cooktop Range Stove spark ignition does not work
http://www.fixya.com/support/r5649407-cooktop_range_stove_spark_ignition_not

heatman101

there is a problem with either the elements or the controls,i doubt it is the elements as its unlikely that all of them are faulty at once.the control knobs or control panel is more likely the problem.

hi...first thing to do is canvas the price of the ceramic glass top,coz the price of the glass is half or more compare to the new one..do u think if u buy a glass only it is reasonable or waste ur money?then dont try to fix it by it ur self,coz the glass u buy is no warranty for wrong instalation.call an expert technician to do it to get an assurance for the warranty for installation.

http://www.repairclinic.com/Appliance-Parts?s=t-jed8430-%3d%3dc251

This company has your knobs.

hi my name is mark, yes most manual gas valves can be disassembled and lubed. you will need gas valve grease. remember a little goes a long way and shut off the gas to the unit before disassembly.

Remove hotplate and oven control knobs. Under the 2nd and 5th knobs is an extra screw which holds on the front cover. Unscrew these and free the cover then access is gained to the screws (2 on each edge) which removes the plate to which the regulators are fixed.Remove the faulty regulator by unscrewing it from the plate,(2 screws) It is an easy job then to install the new part taking care to put the correct wires on the correct terminals. Reassemble, job done!