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Noisy Induction Hob

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jfts...@gmail.com

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May 25, 2006, 7:59:30 AM5/25/06
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Hi,

We have just had a De Dietrich induction hob installed. We had a
little test last night to see if everything was in working order. We
boiled one pan of water and were impressed with the speed etc...

We then used all four rings. The hob started to make loud clicking
sounds and seems to pulsate the power from the front ring to the back
ring; therefore the water wasn't being constantly heated.

Does anyone know if this is normal for this type of hob? Or do you
think there might be a fault.

Really appreciate anyone's help / advice.

Thanks very much

Justin

"Pet @ www.gymratz.co.uk ;¬)"

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May 25, 2006, 8:29:50 AM5/25/06
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jfts...@gmail.com wrote:
>
> We then used all four rings. The hob started to make loud clicking
> sounds and seems to pulsate the power from the front ring to the back
> ring; therefore the water wasn't being constantly heated.
>
> Does anyone know if this is normal for this type of hob? Or do you
> think there might be a fault.

Just as a guess, I would imagine the hob doesn't have the output to go
to full power on all rings at the same time. After all, In a real
cooking environment what are the chances of this ever happening?

On our Neff one there is a power boost which enables one of each pair of
rings to take ALL the power for very rapid heating/boiling.

When you hit the "C" button for a ring it cycles power on and off to
maintain desired temperature.
I would think what is happening is normal for such a bizarre situation,
but I would have thought a quick call/mail to their tech. dept. would
put your mind at ease.

Don't forget, some pans also become quite "vocal" on an induction hob.

Cheers
Pete

--
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http://trade-price-supplements.co.uk - TRADE PRICED SUPPLEMENTS for ALL!
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Andrew Mawson

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May 25, 2006, 8:38:26 AM5/25/06
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"Pet @ www.gymratz.co.uk ;¬)" <PeT...@gymratz.co.uk> wrote in message
news:2rhdg.75436$wl.6...@text.news.blueyonder.co.uk...

> jfts...@gmail.com wrote:
> >
> > We then used all four rings. The hob started to make loud
clicking
> > sounds and seems to pulsate the power from the front ring to the
back
> > ring; therefore the water wasn't being constantly heated.
>>SNIP<<

> Just as a guess, I would imagine the hob doesn't have the output to
go
> to full power on all rings at the same time. After all, In a real
> cooking environment what are the chances of this ever happening?
>>SNIP<<
> Cheers
> Pete

I would say the eventuallity of all rings demanding full power at the
same time was VERY common. You prepare a meal ahead of time, with pans
on hob just needing switching on. Come back form work and - switch
them all on. Must happen nearly every day in some housholds.

AWEM


Jay Arr

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May 25, 2006, 8:41:10 AM5/25/06
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<jfts...@gmail.com> wrote in message
news:1148558370....@38g2000cwa.googlegroups.com...

================================

I've had a Hotpoint Induction Hob for about three months. It is silent
unless bleeping to tell me cooking time is up or I have left an item on top
of the touch control panel etc etc. It does emit strange groaning noises
if I try to heat too quickly such as turning the heat instantly to max AND
switching on the boost control. So I have learned to be less impatient.

From what you say I reckon your hob is not performing correctly and I would
take appropriate action under guarantee.

Incidentally, my wife dropped a heavy stainless steel salt mill on to the
edge of our Hotpoint yesterday. It has "taken a bite" out of the glass
edge like a bite out of an apple pie AND sent a crack across the glass
cooker surface. Cost of new glass and fitting by a Hotpoint engineer is
£300.

Jimmie in pain .....
>


Grumps

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May 25, 2006, 9:19:24 AM5/25/06
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> Hotpoint engineer is Ł300.
>
> Jimmie in pain .....

Check your insurance. Our covers ceramic hobs.


"Pet @ www.gymratz.co.uk ;¬)"

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May 25, 2006, 11:44:51 AM5/25/06
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Andrew Mawson wrote:

> I would say the eventuallity of all rings demanding full power at the
> same time was VERY common. You prepare a meal ahead of time, with pans
> on hob just needing switching on. Come back form work and - switch
> them all on. Must happen nearly every day in some housholds.

Still can't see it myself.
what _exactly_ would you put in your 4 pots, all of which would require
the same amount of time to cook that they needed to be switched on all
at the same time but couldn't be put in the same pot.

I agree the chances of having every ring on at the same time is
certainly not difficult to imagine, but once up to temp, power
consumption is greatly reduced and cycles on and off.

Besides which, almost every kitchen has an oven (or 2) and a microwave.

I'm intrigued.

Jay Arr

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May 25, 2006, 11:45:55 AM5/25/06
to

"Grumps" <gru...@hotmail.com> wrote in message
news:4dlpg4F...@individual.net...
>> Hotpoint engineer is £300.

>>
>> Jimmie in pain .....
>
> Check your insurance. Our covers ceramic hobs.
===================================

Indeed I have done. I'm with Tesco Home Insurance and I am covered. Mind
you, there IS a small matter of £100 excess.

Jimmie ... the pain is clearing


Ian Stirling

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May 25, 2006, 11:46:12 AM5/25/06
to
In uk.d-i-y Andrew Mawson <andrew@no_spam_please_mawson.org.uk> wrote:
>
> "Pet @ www.gymratz.co.uk ;?)" <PeT...@gymratz.co.uk> wrote in message

> news:2rhdg.75436$wl.6...@text.news.blueyonder.co.uk...
>> jfts...@gmail.com wrote:
>> >
>> > We then used all four rings. The hob started to make loud
> clicking
>> > sounds and seems to pulsate the power from the front ring to the
> back
>> > ring; therefore the water wasn't being constantly heated.
>>>SNIP<<
>> Just as a guess, I would imagine the hob doesn't have the output to
> go
>> to full power on all rings at the same time. After all, In a real
>> cooking environment what are the chances of this ever happening?
>>>SNIP<<

> I would say the eventuallity of all rings demanding full power at the


> same time was VERY common. You prepare a meal ahead of time, with pans
> on hob just needing switching on. Come back form work and - switch
> them all on. Must happen nearly every day in some housholds.

Is it possible that it's simply oversized slightly for the incoming
rating?
For example - if it's rated at 9.5Kw overall, and each ring can use 3Kw,
then if you put all 4 rings on, it'd potientially blow fuses.
So, it turns one ring on and off, to keep the power to the sticker
amount.

The Reid

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May 25, 2006, 11:54:26 AM5/25/06
to
Following up to Pet @ www.gymratz.co.uk ;¬)

>what _exactly_ would you put in your 4 pots, all of which would require
>the same amount of time to cook that they needed to be switched on all
>at the same time but couldn't be put in the same pot.

how about 4 frying pans for an urgent mixed grill?

>I agree the chances of having every ring on at the same time is
>certainly not difficult to imagine, but once up to temp, power
>consumption is greatly reduced and cycles on and off.
>
>Besides which, almost every kitchen has an oven (or 2) and a microwave.

I've got three ovens and no microwave but I don't use them to
boil water.
--
Mike Reid
Walk-eat-photos UK "http://www.fellwalk.co.uk" <-- you can email us@ this site
Walk-eat-photos Spain "http://www.fell-walker.co.uk" <-- dontuse@ all, it's a spamtrap

Guy King

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May 25, 2006, 12:15:58 PM5/25/06
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The message <YbmdncNDdeD...@bt.com>
from "Andrew Mawson" <andrew@no_spam_please_mawson.org.uk> contains
these words:

> I would say the eventuallity of all rings demanding full power at the
> same time was VERY common. You prepare a meal ahead of time, with pans
> on hob just needing switching on. Come back form work and - switch
> them all on. Must happen nearly every day in some housholds.

I can't think of any. The only time it's happened here is when making
Christmas puds.

--
Skipweasel
Pay no attention to that man behind the curtain.

PeterK

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May 25, 2006, 2:32:20 PM5/25/06
to

<jfts...@gmail.com> wrote in message
news:1148558370....@38g2000cwa.googlegroups.com...
AKAIKhaving had two induction hobs the manfacturers split the 4 "rings" into
two pairs with one ring in each pair having a boost facility. When the
boost is engaged then the other ring in the pair will have its power setting
reduced so that the total power consumption of the pair does not exceed both
rings on "normal" full. The only noise I've ever heard from an induction hob
is from the cooling fans of the "electronics".

There was a post a few weeks ago about connecting up a hob - my current hob
could accept 2 or 3 phase 415v, single phase 240v, 3 phase 240v through the
connecting/jumping the neutral, L1,L2,L3 connections. Could the hob have
been incorrectly wired and still operate at the wrong "voltage"?

Peterk


Wayne Boatwright

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May 25, 2006, 3:20:49 PM5/25/06
to
On Thu 25 May 2006 08:54:26a, Thus Spake Zarathustra, or was it The Reid?

> Following up to Pet @ www.gymratz.co.uk ;¬)
>
>>what _exactly_ would you put in your 4 pots, all of which would require
>>the same amount of time to cook that they needed to be switched on all
>>at the same time but couldn't be put in the same pot.
>
> how about 4 frying pans for an urgent mixed grill?

How urgent could it be?



>>I agree the chances of having every ring on at the same time is
>>certainly not difficult to imagine, but once up to temp, power
>>consumption is greatly reduced and cycles on and off.
>>
>>Besides which, almost every kitchen has an oven (or 2) and a microwave.
>
> I've got three ovens and no microwave but I don't use them to
> boil water.

I often use the microwave to bring small quantites of water to a quick
boil. Beats the hell out of a pot on the stove.

--
Wayne Boatwright @¿@¬
_____________________

Owain

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May 25, 2006, 6:09:11 PM5/25/06
to
Wayne Boatwright wrote:
>>I've got three ovens and no microwave but I don't use them to
>>boil water.
> I often use the microwave to bring small quantites of water to a quick
> boil. Beats the hell out of a pot on the stove.

Wouldn't an electric kettle be a lot easier? And quicker, unless you've
got a 3kW microwave.

Owain

GymRatZ

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May 25, 2006, 6:59:41 PM5/25/06
to
The Reid wrote:

> I've got three ovens and no microwave but I don't use them to
> boil water.

what about a kettle?

meow...@care2.com

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May 25, 2006, 7:19:44 PM5/25/06
to

Tricks like this are common, they limit the max load and max appliance
case temperature. Since the electronics costs real money in an
induction hob, cost alone is justification enough to do this.


NT

Ian Stirling

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May 25, 2006, 8:49:15 PM5/25/06
to

More like 4-5Kw.
My kettle is 2300W, microwaves are about 50% efficient.
With newer kettles, you can easily boil half a cup in seconds.

The Reid

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May 26, 2006, 5:11:12 AM5/26/06
to
Following up to PeterK

>The only noise I've ever heard from an induction hob
>is from the cooling fans of the "electronics".

I wonder how long they will turn out to last? My last cooker went
to cooker heaven through lack of a spare after 25 years.

The Reid

unread,
May 26, 2006, 5:11:12 AM5/26/06
to
Following up to GymRatZ

>> I've got three ovens and no microwave but I don't use them to
>> boil water.
>
>what about a kettle?

that is indeed what I use for cups of tea, if I'm boiling food in
pans I heat the water in the pans I'm going to cook the food in.

The Reid

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May 26, 2006, 5:11:12 AM5/26/06
to
Following up to Wayne Boatwright

>> how about 4 frying pans for an urgent mixed grill?
>
>How urgent could it be?
>

don't you get hungry?

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