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Introduction to Induction Cooking

How Induction Cooking Works

Induction cooking uses high frequency (20-50 K hz) 
magnetic energy to heat a ferrous metal pan when 
it is placed over the induction coil. The induction 

fi

 elds have no affect on non magnetic surfaces 

such as paper, plastic, or non ferrous metals like 
aluminum, or copper. Thermal sensors under the 
glass surface communicate with microprocessor 
controls for pan sensing and turn-down.

Part one: Coil produces electromagnetic energy

The 

fi

 rst component needed is an induction coil or 

element. The induction coil generates the magnetic 

fi

 eld needed for induction cooking.

Part two: Pan uses the energy to produce heat 

The second component is the ferromagnetic cooking 
pan with a bottom constructed of material that will 
attract a magnet. If a magnet will not stick to the 
bottom of the pan, it can not be used for induction 
cooking.

When the proper type of pan is placed over an 
energized induction coil, a 

fi

 eld of magnetic waves 

will cause the bottom of the pan to heat.

Induction cooking is very ef

fi

 cient. The energy 

Glass Cooktop Surface

Induction Coil

Testing Bottom of Pan with Magnet

Water

Glass Cooktop Surface

Induction Coil

Pan with Bottom of 
Magnetic Material

created by the induction coil is applied to only the 
bottom of the pan. 

The contents of the pan are therefore heated more 
quickly than they would be if heated by a gas 

fl

 ame or a traditional radient heating element. 

By heating only the bottom of the pan, the 
surrounding surface remains cooler than with 
traditional cooktops.

Features:

Easy cleanability

• 

Cooktop cleaning is easier 

since spills and splatters do not burn on the 
cooktop, which is about 500°F vs 1200°F for 
radiant. 

Control and responsiveness equal to gas

• 

This induction cooktop give you instant control 
of the amount of heat added to the cookware.  

Fast and Powerful

• 

providing an incredibly 

fast boil time. 3700 w, 8.5 min. to boil vs 12 to 
14 min. for radiant and 14 to 16 min. for gas 
(18k BTU).   

Effi cient performance

• 

Induction technology 

heats only the pan and its contents, not the 
kitchen. Ef

fi

 ciency ratings are: Induction 83%, 

Radiant 72%, and gas 38%.

Induction Fields

Note: 

There are no health risks associated with the use of this cooktop. The RF 

fi

 eld from an induction 

element dies away to almost nothing at a distance of about one foot (30 centimeters). You will not receive 
even trivial radiation from an induction cooktop unless you spend a long time well within one foot of an 
operating element.

Summary of Contents for Profile PHP900

Page 1: ...onogram 30 and 36 in Induction Cooktop PHP900 PHP960 ZHU30 ZHU36 Technical Service Guide April 2008 GE Consumer Industrial XX RQ HOT VE RY HOT LE FT SIDE RIGHT SIDE NOTS O HOT XB EW Y WARM XQ MA HOT X...

Page 2: ...avoid personal injury disconnect power before servicing this product If electrical power is required for diagnosis or test purposes disconnect the power immediately after performing the necessary chec...

Page 3: ...rtop 21 Diagnostics and Service Information 31 Elements 22 Fans 30 Filter Board 29 Generator Boards 28 Glass Maintop 22 Heat Shield 26 Installation 7 Introduction 4 Introduction to Induction Cooking 6...

Page 4: ...the highest wattage induction element in the industry warming capability and a low heat simmer setting for delicate sauces Cooler cooktop surface Since there is not a traditional thermal heating eleme...

Page 5: ...ontrol Type R Digital Monogram Model Number Z H U 30 R B M 1 B B Engineering Digit 1 1st Version Nomenclature The letter designating the year repeats every 12 years Example T 1974 T 1986 T 1998 Serial...

Page 6: ...gnet Water Glass Cooktop Surface Induction Coil Pan with Bottom of Magnetic Material created by the induction coil is applied to only the bottom of the pan The contents of the pan are therefore heated...

Page 7: ...and follow the manufacturer s recommended procedure closely Ceramic Glass Cooktop If the glass is damaged it may be replaced as a separate part The touch board and electronics are separate parts Model...

Page 8: ...eatures and appearances may vary Explained on page Cooking Elements 10 Control Lock 13 Kitchen Timer 12 ON Indicator Light one for each element 10 Hot Surface Indicator Light Area 12 Cooking Element O...

Page 9: ...ing element requires a MINIMUM pan size If the pan is properly centered and of the correct material but is too small for the cooking element the element cannot be activated The display will flash F al...

Page 10: ...ith hands Always use mitts or pot holders to protect hands from burns DO NOT SLIDE cookware across the cooktop surface Doing so may permanently damage the appearance of the ceramic cooktop Curved or w...

Page 11: ...d steel and combinations of these materials Some cookware is specifically identified by the manufacturer for use with induction cooktops Use a magnet to test if the cookware will work Flat bottomed pa...

Page 12: ...pad The induction element will be turned off and the display will be blank With an element control ON If a pan is removed or moved to off center from the cooking ring the control will flash F along w...

Page 13: ...endent induction generators One generator controls 2 elements or two cooking zones within a heating section share the power of one generator Five burner cooktops are divided into 3 zones The right and...

Page 14: ...hen timer to measure cooking time or as a reminder The kitchen timer does not control the cooking elements Touch the Timer ON OFF pad Touch the or pad to choose the desired number of minutes When the...

Page 15: ...occurs make sure the air inlet below the cooktop is unobstructed Touch the ON OFF pad and allow the cooktop to cool for 30 to 45 minutes before operation can begin again If either of these conditions...

Page 16: ...enerator board maximum output is 3700W When using an element on high and a second element sharing the same generator board is then operated the second element will receive priority For example if the...

Page 17: ...rness Electrical Cover Conduit Clamp Baffle Glass Aluminum Heat Shield Right Gene Modu Protective Tape Burner Box Hold Down Brackets with Thumbscrews Cable Kit Insulation Right Insulation Left Left Si...

Page 18: ...enerator Board Fan Left Side Generator Board Fan Cover Foam Seal Wire Harness Electrical Cover Conduit Clamp Baffle Glass Shield Generator Module Protective Tape Burner Box Hold Down Brackets with Thu...

Page 19: ...e 36 in Models ZHU36 and PHP960 Aluminum Heat Shield Touch Board Main Fan Filter Board Filter Board Left Side Generator Board Center Generator Board Right Side Generator Board Left Side Fan Thermal Cu...

Page 20: ...20 Filter Board Fan Left Side Generator Board Right Side Generator Board Aluminum Heat Shield Touch Board 30 in Models ZHU30 and PHP900 Thermal Cut out...

Page 21: ...y be exposed when servicing Use caution to avoid injury Wear Kevlar gloves or equivalent protection Note When servicing the cooktop care must be taken not to scratch or damage the glass All components...

Page 22: ...bly To remove heating elements Remove the glass maintop See 1 Glass Maintop Mark the alignment pins and guides for correct 2 replacement Caution To prevent damage to element insulation care should be...

Page 23: ...vity between the touch board and the cooktop glass To remove the touch board Remove the glass maintop See 1 Glass Maintop Note the location of the touch board wire 2 harness then disconnect the wire h...

Page 24: ...ass Top There are 10 tabs on 30 in models and 14 tabs on 36 in models All tabs are located along the perimeter of the heat shield Tab Locations 30 in Model Heat Shield Heat Shield Tab Note If one or m...

Page 25: ...shield can be aligned with the tab by pushing down on the screwdriver and raising the heat shield even with the tab Tab Locations 36 in Model Inspect all tab to heat shield alignment areas Repeat thi...

Page 26: ...ect Rail 36 in model shown 7 Raise the rear of the heat shield approximately 3 inches and disconnect the 2 ground wires from the bottom of the heat shield 6 Remove the 20 Phillips head screws from the...

Page 27: ...the filter board right filter board on 36 in models acts as the LIN master while the generator boards and left filter board on 36 in models are the LIN slaves All of these components receive a signal...

Page 28: ...be connected to the bottom terminal on the generator board 4 Disconnect the LINbus connector See LINbus Connectors 5 Note the position of the thermal cut out and pull it out of the heat sink fins Clip...

Page 29: ...36 in models disconnect the filter to filter wire harness 8 Disconnect the LINbus connectors See LINbus Connectors 9 Using a flat blade screwdriver carefully press in the large 1 30 in model or 2 36...

Page 30: ...n motor All fans are operated by 12 VDC motors Caution To prevent damage to fragile fan locking tabs test fan before removing it from the module Note When testing these fans You cannot test with an oh...

Page 31: ...is too fast or temperature at ele ment is too high Check if an empty pan is being heated Check for obstruction in fan wire connections to board Check fan vents for air blockage Replace element Diagno...

Page 32: ...cted Check pans for flat bottom Pan not detected Check pans with magnet for steel content Pan not detected Check pan size vs element size Element turns off if pan is off burner more than 30 seconds Ch...

Page 33: ...Not used 2 Wire Model ZHU36 and PHP960 WIRE COLORS BARE U BLACK B or BK BLUE N or BU BROWN C or BR GRAY S or GY GREEN G or GN ORANGE O RED R VIOLET V WHITE W YELLOW Y WARNING To prevent electrical sho...

Page 34: ...ng the connections marked with an from the circuit boards Damage to the circuit boards or cables may occur without the special tool Aluminum Plate Touch Board Cable GND L1 L2 Ground Caution A special...

Page 35: ...e product Improper installation delivery or maintenance Failure of the product if it is abused misused or used for other than the intended purpose or used commercially Damage to the glass cooktop caus...

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