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  • Help…. Turbo Chef Bullet F3 Error.

     ectofix updated 7 months, 2 weeks ago 4 Members · 5 Posts
  • jonbartz

    October 18, 2019 at 6:59 pm

    Turbo chef Bullet. Gave a F3 error. I checked everything out tested each component and can’t figure out why I’m getting the error. I have replaced both  Caps, HV Transformers, HV diode, 2 new sets of Mags(checked wave guides). replaced k2 and k6 relay. F3 fuse is working as should. I was on the phone with turbo chef for 2 hours and we went though everything agian just to make sure I wasn’t missing anything. They are out of Ideas as well. We are only getting 5 amps to the board. I’m getting 208 volts to the transformers.   10 amps coming out of the Filament transformers initially peaks at 15 the drops to 10 within seconds. Am I missing something?

  • fixbear - ADK NY

    October 19, 2019 at 10:02 am

    Measure the tranformer in current in test mode. It should be 10 amps. IF not you have a power supply problem.  If it is look to make sure the wire for the transformer goes through the CT coil on the board.  That’s how it measures it. 

    In case you don’t have a service manual it is here;   Page 75 in the pdf or page 49 in the subsection has what you need.  Make sure the machine has the correct input voltage and no resistance in the power wiring and fuse, fuse block. Wrong spec fuse will do this.

  • fixbear - ADK NY

    October 19, 2019 at 10:05 am

    I should also add that magnetron cooling is important. It does have a thermostat that may be opening.

  • olivero - Florida

    October 20, 2019 at 4:34 pm

    I don’t know this particular model but I have worked on some Turbo Chef before.

    Amp draw is based on a component using it, what causes the 5 A draw you are missing? It sounds like a relay or contactor or safety is causing this component to stay out of the circuit when it should be in it.

  • ectofix - Nashville

    October 20, 2019 at 4:56 pm

    Off the top of my head, I suggest checking to be sure that ALL HV components are wired correctly.  Any wires accidentally swapped between any two terminals will prevent proper operation of a magnetron.

    Also be sure that the primary inputs to the power transformers are wired correctly.  Each has a 0v terminal, a 208v terminal and a 240v terminal.  Make sure the wires go where their intended per the wiring diagram.

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