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Re: oven diplomat electrical prob g720 cooling fan prob

WSTS is exactly correct – I had problems with the flame stability to the degree that the grill flame licked out of the unit in a very disturbing manner

Anyway a new control PCB corrected the fan problem and stabilised the flame burn.

Job done – thanks all for the replies and discussion

Note the same PCB is used extensively by a number of manufacturers (as per original post) and model ID’s

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Re: oven diplomat electrical prob g720 cooling fan prob

Thanks for that Dave – Can you advise where best to get spare board ?

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Re: oven diplomat electrical prob g720 cooling fan prob

sparky_69 wrote:hey ive got a diplomat softline g720 gas oven and the cooling fan isnt working ive tested the fan as im an electrician and thats fine ive then tested the pcb too and thats fine but when i power it up i get a voltage drop to the fan its should be 240v but im only getting 120v can anyone help thanks
sparky

I’ve got exactly the same problem with the g720 (mines a Howden supplied) and tackled it the same as you – All other function OK

Tested fan with 240 volt independent supply – OK

So PCB tested in situ 2 leads white and blue to the fan

WHITE FROM L (Live) = 240v
BLUE FROM ‘OUTPUT’ PIN = 240V — YES That’s right I registered 240v on this line too ( CRAZY – surely this should be neutral ) Not only Crazy voltage on this line but spade ends are uncovered – DANGER DANGER

And why connect BLUE to a pin labeled OUTPUT ??

If this fan has variable speed surely the BLUE should be neutral and the white ramping up the voltage to max of 240??

If the board is blown then I’m amazed that it didn’t blow the mains breakers!

Anybody know where to find schematics for this board to check the pinouts and expected voltages ?

Regards

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