GE PHB925SB1SS Technical Service Manual Download

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Oven Sensor and Door Switch Test

Note

: See

Door

Lock Assembly

for door switch function explanation.

Remove power from oven.

Make resistance measurement from side of sensor and lock switch connector with exposed terminals.

The resistance measurements are made on the relay board and the main logic board with the control

panel in the service position. (See

Control Panel

.) Test on the main logic board at the wire harness

disconnected from J501 pins 1 to 2 for the sensor and on the relay board J16 for the lock switches. If
abnormal reading is observed, wiggle leads at disconnect block. If any variation, replace.

COMPONENT TEST

Circuit

Terminals

Ohms

Oven Sensor

1 to 2

1100

@ Rm. Temp.

1654

@ 350°F

2650

@ Clean Temp

Door Latched

1 to 3
1 to 4

Open

Door Unlatched

1 to 4
1 to 3

Open

Door Locked

Lock Assembly Wire Harness

J16

Lock Assembly Wire Harness

J16

Door Unlocked

Oven Probe Oven Sensor

J501

4 3 2 1

Summary of Contents for PHB925SB1SS

Page 1: ...GE Appliances General Electric Company Louisville Kentucky 40225 31 9186 PHB925SB1SS Technical Service Guide May 2009 GE Consumer Industrial Profile 30 in Free Standing Induction Range ...

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 checks RECONNECT ALL GROUNDING DEVICES If grounding wires screws straps clips nuts or washers used to complete a path to ground are removed for service they must be returned to their original position an...

Page 3: ... Requirements 20 Filter Board 55 Generator Boards 54 Glass Touch Panel 48 High Limit Thermostat 45 Induction Module 53 Installation 20 Introduction 4 Introduction to Induction Cooking 6 LINbus Connectors 52 Main Logic Board 47 Meat Probe and Outlet 42 Nomenclature 5 Operation Overview 19 Oven Components 36 Oven Door Assembly 28 Oven Door Hinge Receiver 35 Oven Light Assembly 43 Oven Sensor and Doo...

Page 4: ...bility and a low heat simmer setting for delicate sauces Cooler cooktop surface Since there is not a traditional thermal heating element the induction cooktop stays cooler than conventional radiant cooktops Below cooktop venting that dissipates heat permitting less depth to the burner box Easy cleanability Cooktop cleaning is easier since spills and splatters do not burn on the cooktop Electronica...

Page 5: ... for Engineering and Product Service Only Model Year Designator Model Door Color S Stainless Configuration H Induction The letter designating the year repeats every 12 years Example T 1974 T 1986 T 1998 Serial Number The first two numbers of the serial number identify the month and year of manufacture Example AS123456S January 2009 A JAN 2009 S D FEB 2008 R F MAR 2007 M G APR 2006 L H MAY 2005 H L...

Page 6: ...s will cause the bottom of the pan to heat Glass Cooktop Surface Induction Coil Testing Bottom of Pan with Magnet Water Glass Cooktop Surface Induction Coil Pan with Bottom of Magnetic Material Induction cooking is very efficient The energy 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 b...

Page 7: ...e element cannot be activated The power level setting displayed will flash for approximately 30 seconds then will turn off Cookware larger than the element ring may be used however induction heating will only occur above the element For best results the cookware must make FULL contact with the glass surface Do not allow the bottom of the pan or cookware to touch the surrounding metal cooktop trim ...

Page 8: ...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 pans give best results Pans with rims or slight ridges can be used Round pans give best results Pans with warped or curved bottoms will not heat evenly For wok cooking use a flat bottomed wok Do not use...

Page 9: ...h the BAKE pad Touch the number pads to set the desired oven temperature Touch the START pad When baking is finished touch the CLEAR OFF pad CONVECTION COOK Pad Touch the CONVECTION COOK pad Touch the number pads to set the desired oven temperature Touch the START pad When cooking is finished touch the CLEAR OFF pad WARM Pad Touch to keep cooked foods warm SLOW COOK Pad Touch for long hours of una...

Page 10: ...there has been a power outage CONTROL LOCKOUT Pad Your control will allow you to lock out the touch pads and the cooktop so they cannot be activated when touched To lock the controls and cooktop Touch and hold the CONTROL LOCKOUT pad for 3 seconds The oven display will show Loc On Loc for a few seconds then will return to time of day Loc On Loc will briefly reappear when any pad except CLEAR OFF i...

Page 11: ...ps below 1 Touch the upper oven BROIL HI LO and BAKE pads at the same time until the display shows SF Your oven control is set to use the Fahrenheit temperature selections but you may change this to use the Celsius selections 1 Touch the upper oven BROIL HI LO and BAKE pads at the same time until the display shows SF Fahrenheit or Celsius Temperature Selection Touch the COOK TIME and BROIL HI LO p...

Page 12: ...IME pad The display will show 2 BEEP This is the middle volume level Touch the COOK TIME pad again The display will show 3 BEEP This is the loudest volume level 2 Touch the COOK TIME pad again The display will show 1 BEEP This is the quietest volume level For each time the level is changed a tone will sound to provide an indication of the volume level Choose the desired sound level 1 BEEP 2 BEEP 3...

Page 13: ...s in the display the BROIL HI LO and BAKE pads were not touched at the same time Touch the CLEAR OFF pad and begin again Tap the DELAY START pad until SAb bAtH SAb appears in the display Touch the START pad and will appear in the display Touch the COOK TIME pad on the upper oven No signal will be given Touch the number pads to set the desired length of cooking time between 1 minute and 9 hours and...

Page 14: ...ackers chips or dry cereal Do not line the warming drawer or pan with aluminum foil Foil is an excellent heat insulator and will trap heat beneath it This will upset the performance of the drawer and could damage the interior finish Allow approximately 25 minutes for the warming drawer to preheat Do not put liquid or water in the warming drawer When Using the Warming Drawer All foods placed in the...

Page 15: ... 7 2500 Watts 7 2500 Watts 11 3700 Watts 6 1800 Watts Warmer 100 Watts WARMING ZONE SELECT OFF ON S SIMMER IMMER Feature Index Cooking Elements Element Location Indicator one for each element Hot Surface Indicator Light Area Cooking Element ON OFF Control 1 1 1 2 1 3 1 4 1 1 1 2 1 3 1 4 S SIMMER IMMER ...

Page 16: ...setting To use the Melt feature Touch the ON OFF pad then touch MELT The element will automatically set to a predetermined setting and L will be displayed To turn off a single surface unit touch the ON OFF pad again The power level with a fraction indicates the additional half step setting You may hear clicking sounds indicating the control is maintaining your desired setting Surface Unit Cook Set...

Page 17: ... sound level will go down 1 2 3 Power Sharing Four burner cooktops are divided into two separate heating zones The right and left side cooking zones are powered by separate and independent induction generators Each generator controls the 2 elements in the zone Power Sharing is activated when both elements in the same cooking zone are activated and one element is set for Boost H The element that is...

Page 18: ...ight one for each cooking element will glow immediately when any element is activated The indicator light s glow when the glass surface is hot and will remain on until the surface has cooled to a temperature that is safe to touch HOT COOKTOP HOT COOKTOP WARMING ZONE SELECT ON OFF WARNING FOOD POISON HAZARD Bacteria may grow in food at temperatures below 140 F Always start with hot food Do not use ...

Page 19: ...orking through the main logic board The main logic board is connected via the local interconnect network LIN serial wire to the cooktop module and a relay power supply board RPSM located on the back of the unit A fifth cooktop element is a resistive warmer controlled by RPSM relays See Schematics and Wiring Diagrams No relay boards or line voltage are brought to the control panel The bridge board ...

Page 20: ...WARNING ALL NEW CONSTRUCTIONS MOBILE HOMES AND INSTALLATIONS WHERE LOCAL CODES DO NOT ALLOW GROUNDING THROUGH NEUTRAL REQUIRE A 4 CONDUCTOR UL LISTED RANGE CORD Use only a 3 conductor or a 4 conductor UL listed range cord These cords may be provided with ring terminals on wire and a strain relief device A range cord rated at 40 amps with 125 250 minimum volt range is required A 50 amp range cord i...

Page 21: ... 21 Component Locator Views Continued next page Front View Control Panel ...

Page 22: ...ront View Shown with oven door and warming drawer removed Continued next page Hidden Bake Element Convection Fan and Element Broil Element Meat Probe Outlet Light Oven Temperature Sensor Warming Drawer Element Door Lock Door Switch ...

Page 23: ... 23 Continued next page Main Top Shown in service position Control Panel Display Board Display Board Main Logic Board Thermal Switch Hot Surface Indicator Light Assembly Door Lock Motor Induction Module ...

Page 24: ...Elements Warming Element Induction Element Induction Element Induction Element Induction Element Bridge Board Filter Board Left Generator Board Right Generator Board Cooling Fan Induction Module Continued next page ...

Page 25: ... are located behind the left side panel Main Logic Board Convection Fan Motor Convection Fan Motor Capacitor Oven Temperature Sensor Convection Element Broil Element Right Wing Board Left Wing Board Warming Drawer Element Relay Power Supply Module RPSM ...

Page 26: ...Convection Fan Motor Direction J10 Ground J11 Neutral Standby J14 L1 J16 Oven Lock Switch Oven Unlock Switch J17 Communication Cable Linbus J20 240 VAC J21 Bad Line Monitor K1 Convection Fan Motor Direction K3 Broil Bake Element Selector Relay K4 Oven Light K5 Warming Drawer Element K7 Bake Convection Element Selector Relay K8 Convection Fan Motor K10 Convection Element Relay K11 Warming Zone Elem...

Page 27: ...ronic Range Control Board J821 J501 J241 J751 J841 J201 Model Selector J241 Linbus J501 Oven Sensor Meat Probe J751 Oven Touch Panel Board J821 Left Side Touch Panel Board J841 Right Side Touch Panel Board J201 ...

Page 28: ...ifting procedure Do not lift the door by the handle To remove the oven door assembly Open the door fully 1 Pull the hinge locks from the locked position 2 down toward the door frame to the unlocked position Firmly grasp both sides of the door at the top 3 Close door to the door removal position 4 Lift door up until the hinge arms are clear of the 5 slots To replace the oven door assembly Firmly gr...

Page 29: ... putty knife in the following step Separate the inner door assembly from the 5 outer door assembly To replace the inner door assembly Remove the inner door assembly See To remove the inner door assembly Remove the three T 20 Torx screws 3 on each 1 side that attach each door hinge to the inner door Carefully turn the door over and remove both door hinges Remove the six 1 4 in hex head screws that ...

Page 30: ...en removing the gasket pull the ends of the gasket out of the slots at the bottom of the door Place a finger under the gasket beside each clip and pull straight up Assembly Notes When assembling make sure the hinges are parallel to each other and perpendicular to the door liner If not the hinge may bind on the receiving channel of the door If the new hinge is not in the cocked and locked position ...

Page 31: ... When installing the door handle make sure the handle is level with the top of the door before attaching the heat deflector An enlarged hole for the right side screw has been provided for this adjustment 5 Remove the three 1 4 in hex head screws 3 from each side that attach the bottom trim to the outer door frame 6 Slide the bottom trim and the glass out of the outer door frame Note Two arrows on ...

Page 32: ...ide while pulling the drawer out To replace the warming drawer place the drawer rail in the guides and push the drawer in until it stops Right Side Tab Note The cooktop panel hinge slots rest on a hinge pin mounted to each end plate Hinge Slot End Plate Induction Module Ground Wire Cooktop Ground Wire Warming Zone Wire Harness Induction Module L2 Linbus Induction Module L1 7 Open the oven door and...

Page 33: ...d screw and ground 3 wire from the back of the range Remove the 1 4 in hex head screw and 4 terminal cover Remove six 1 4 in hex head screws that attach 5 the panel to the range Note When installing the rear cover insert left side of cover under tab before installing screws Ground Screw Tab Ground Wire Control Panel Rear Cover To remove the rear cover Disconnect power to the range 1 Pull the range...

Page 34: ...move the three 1 4 in hex head screws from the rear of the side panel Maintop Strike Note The front of the panel is held to the range frame by 2 plastic grommets that engage 2 keyhole slots placed along the inside front flange of the panel 9 Grasp the front and rear portion of the side panel Lift the side panel up and pull towards you then disengage the two plastic grommets Plastic Grommet Plastic...

Page 35: ...driver on the 4 other spring clip depress the spring clip and continue pulling the switch from the door frame Disconnect the door switch wire harness 5 Oven Door Hinge Receiver To remove the hinge receiver Remove the side panel See 1 Side Panel Removal Note If replacing the left side hinge receiver it is necessary to remove the air tunnel from the left side See Bake Element Remove the 1 4 in hex h...

Page 36: ...erature Sensor The oven temperature sensor is connected to the electronic range control at location J501 The oven temperature sensor has an approximate resistance of 1080 Ω at room temperature 1654 Ω at 350 F 2650 Ω at 865 F Clean temperature The oven temperature sensor has a resistance change rate of 2 Ω per F To remove the oven temperature sensor Disconnect power 1 Remove rear cover See 2 Rear C...

Page 37: ...lement will draw approximately 15 amps To remove the broil element Remove the 1 4 in hex head screw that 1 attaches the sensor to the back of the oven cavity See Oven Temperature Sensor Remove the four 1 4 in hex head screws that 2 hold the broiler to the oven cavity Broil Element 3 Carefully pull then lower the broiler element towards the front of the oven 4 Disconnect the wires from the broiler ...

Page 38: ...ment to the back wall of the oven cavity 3 Carefully pull the convection element towards the front of the oven until the element terminals are accessible 4 Disconnect the wires from the convection element Note Upon reassembly ensure displaced insulation around oven and components is returned to its original position Convection Bake Element Convection Fan Cover The convection fan cover is attached ...

Page 39: ...hot air in the oven The convection fan shuts off when the door is opened The convection fan motor has approximate resistance values between the following wires Red and Blue 174 Ω Red and Gray 78 Ω Blue and Gray 96 Ω To remove the convection fan and motor assembly Remove the convection fan cover See 1 Convection Fan Cover Note The convection fan blade is attached to the D shaped motor shaft with a ...

Page 40: ...e of the induction module air inlet vent 4 Carefully peel the reflective tape from the induction module air inlet vent 5 Grasp the bottom of the air tunnel Push it up approximately 3 4 inch swing out the bottom of the air tunnel then pull it down from the induction module air inlet vent 6 Remove the 1 4 in hex head screw and the upper heat shield 7 Remove the 1 4 in hex head screw that attaches th...

Page 41: ... in hex head screw from the left side of the element retainer 14 Using a small flat blade screwdriver pry the left side of the retainer away from the element 16 Grasp the bake element on both sides and gently pull it toward you as you remove it from the element tray 15 Pull the retainer to the left and disengage the tab from the slot in the element tray Element Tray Left Side Retainer Disconnect D...

Page 42: ...all approximately 3 inches Note When replacing the meat probe outlet cut the probe wires and splice the new probe using approved heat resistant connectors Meat Probe and Outlet The oven is equipped with a meat probe outlet The meat probe outlet is connected to the electronic range control at location J501 The meat probe has a resistance value of 30K 50K Ω at room temperature The probe outlet is he...

Page 43: ...n door switch monitors the position of the oven door and provides this information to the control board The control board operates the light relay located on the control board The light comes on when the door is opened or when the oven is in a cooking cycle The oven light does not come on during self cleaning or if the Sabbath feature is set The light assembly consists of a removable light cover a...

Page 44: ...display CAM The cam on the motor performs two functions Positions the lock hook in the door to prevent 1 opening during clean operation Operates the lock switches which tell the control 2 if the door is unlocked or locked and ready for clean operation Note When the door is either being locked or unlocked both lock switches will be in the open position The door lock motor has an approximate resista...

Page 45: ...the switch wiring incorrectly to the lock assembly When reconnecting the wiring make sure it is properly connected to the lock assembly before turning the power back on Disconnect Disconnect Disconnect High Limit Thermostat In the event of an over heat condition under the cooktop the high limit thermostat will open at 350 F and disconnect L2 voltage from the bake broil and convection elements The ...

Page 46: ...sconnect the 2 element wires 5 Remove the two 1 4 in hex head screws that attach the element to the back wall 6 Using a flat blade screwdriver lift the tabs on each of the 2 clips and remove the element Cover Disconnect Disconnect Clip Warming Drawer Temperature Characteristics Hi Warmer On Time 90 seconds Warmer Off Time 119 seconds 100 First Rise On Time 900 seconds Std Warmer On Time 78 seconds...

Page 47: ... the main logic board down and lift the main logic board from the control panel Note Before connecting power to the replacement main logic board transfer the model selector located at J201 to the replacement main logic board See Control Boards Connector Locator Views Control Panel The control panel contains the main logic board and the glass touch controls To remove the control panel Pull the rang...

Page 48: ...d wire 3 Place the control panel in the service position See Control Panel 4 Remove the four 1 4 in hex head screws that attach the touch panel brackets to the control panel frame 5 Disconnect the left and right touch panel ribbon connectors from the glass touch panel 6 Lift glass touch panel from control panel frame Ribbon Connector Glass Touch Panel Removed Ribbon Connector ...

Page 49: ...eyed slots in the cooktop 5 Lift the aluminum plate from the cooktop Note When installing the aluminum plate to the cooktop be sure to install spacers with the shoulder toward cooktop Carriage Bolt Shoulder Bridge Board The bridge board is located under the cooktop and attached to the aluminum plate with 4 compression pins Three wire harnesses are connected to the board It is necessary to remove t...

Page 50: ...e placed back on the element in its original position Do not use any adhesives 4 Carefully place a flat blade screwdriver under a guide that is captured by a pin 5 Slowly pry upward and release the element off the pin 6 Lift the released side of the element vertically until disengaged from the opposite pin 8 Note the routing of the element wires and loosen the two slotted T 25 Torx screws holding ...

Page 51: ... tab located at the 2 o clock position into the release notch 4 Carefully grasp the outer portion of the element and rotate it counterclockwise 1 inch until it reaches the stop position then lift the element from the aluminum plate To remove the warming zone element Remove the aluminum plate See 1 Aluminum Plate Place the aluminum plate element side up on a 2 protective surface Disconnect the wire...

Page 52: ... motion to remove the LINbus connector Note LINbus is a communication network comprised of a LIN master and one or more LIN slaves The main logic board acts as the LIN master while the RPSM bridge filter and generator boards are the LIN slaves See Operation Overview All of these components receive a signal to perform a specific task but only the appropriate component will act on the message and re...

Page 53: ...ermal cut out will stop operation of the cooktop If the thermal cut out is open check for proper operation of the fan and possible vent obstructions Thermal Cut out Disconnect Induction Module To remove the induction module Remove the cooktop elements See 1 Cooktop Elements Mark and disconnect the 3 wire harnesses from 2 the bridge board Remove the plastic wire tie from the aluminum 3 plate 4 Fold...

Page 54: ...board Note When replacing the L1 and L2 wiring connecting the filter board to the generator board connect that wiring in a matching configuration For example if the L1 output is connected to the bottom terminal on the filter board it must 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...

Page 55: ...s indicate disconnect locations Filter Board To remove the main filter board Remove the induction module See 1 Induction Module Place the module component side down on a 2 protective surface Note the location of the black red and green 3 wires and the 2 jumper blades connected to the filter board power terminals Remove the T 20 Torx screw and the wire 4 retainer from the module Using a T 20 Torx o...

Page 56: ... improper operation of certain range components F codes are not shown on the display when they occur they are stored in EEprom and can be retrieved Diagnostics and Service Information F31 11 24 11 24 Note For the first 3 minutes after power up the F codes will show on the display Retrieve failure codes by pressing TIMER ON CLOCK and START Continued next page ...

Page 57: ...1 The display then shows F cd and prompts for an UPPER or LOWER selection Press 1 for the Oven After selecting 1 for the oven a log is shown Details of any one of up to 7 stored codes can be recalled by pressing a numbered key Continued next page ...

Page 58: ...o exit the F Code mode and return to the time of day display 11 24 bAdLinE Bad Line Display A bAd LinE will be displayed to signal a terminal block cord miswire It will appear if 120 VAC is not present between J21 5 and J20 3 It will also appear if there is less than 200 VAC between J20 1 and J20 3 J20 and J21 are both located on the RPSM Board Continued next page ...

Page 59: ...n harness as RPSM b Replace RPSM Board F611 LIN comm error to slaves such a Check LIN wire in harness b Replace RPSM as RPSM Board c Replace Main Logic Board F612 Line power error detected by RPSM a Check power line for dropouts b Replace RPSM F620 LIN comm error to from RPSM AUX Replace AUX Board especially if MAIN Board relays Board when equipped still function F621 LIN comm error to from RPSM A...

Page 60: ...ooktop bridge board Replace induction bridge board error FA30 Induction cooktop fan error a Replace cooktop fan b Replace cooktop bridge board FA40 Induction cooktop generator Replace both cooktop generator boards board error FA47 Enable signal not getting from Main a Check harness connection Logic Board J241 pin 8 to Cooktop b Replace bridge board Bridge Board X200 pin 3 c Replace Main Logic Boar...

Page 61: ...N RF RF L L Digit ON RF RF H H Digit ON RF Power Boil segment segment ON RR ON OFF RR Segment ON RR RR L L Digit ON Hot Cooktop RR LED ON RR RR H H Digit ON LF ON OFF LF segment Segment ON Hot Cooktop LF LED ON LF LF L L Digit ON LF LF H H Digit ON LF Simmer segment in LF digit segment ON LR ON OFF LR segment Segment ON LR LR L L Digit ON Hot Cooktop LR LED ON LR LR H H Digit ON 4 Hot Cooktop LEDs...

Page 62: ...nut Do not bend blade Fan loud Convect cover screws Tighten Use larger screw if stripped or cavity screws loose No fan operation Check voltage blue to gray when fan Check RPSM MAIN is counterclockwise should read If voltages OK check harness or winding 120VAC Also red to gray when resistance clockwise should read 120 VAC No fan operation Shaft or blade rubbing on oven liner Loosen screws readjust ...

Page 63: ... See Control Panel Test on the main logic board at the wire harness disconnected from J501 pins 1 to 2 for the sensor and on the relay board J16 for the lock switches If abnormal reading is observed wiggle leads at disconnect block If any variation replace COMPONENT TEST Circuit Terminals Ohms Oven Sensor 1 to 2 1100 Ω Rm Temp 1654 Ω 350 F 2650 Ω Clean Temp Door Latched 1 to 3 1 to 4 0 Ω Open Door...

Page 64: ...nect electrical power before servicing Caution Label all wires prior to disconnection Wiring errors can cause improper and dangerous operation Verify operation after servicing Schematic Note All relays designated MK and K are located on the RPSM Used only in factory test ...

Page 65: ... 65 Wiring Diagram MODEL NUMBER ...

Page 66: ...Alaska the warranty excludes the cost of shipping or service calls to your home Some states do not allow the exclusion or limitation of incidental or consequential damages This warranty gives you specific legal rights and you may also have other rights which vary from state to state To know what your legal rights are consult your local or state consumer affairs office or your state s Attorney Gene...

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