GE Monogram ZV850 Technical Service Manual Download Page 20

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Schematic & Strip Circuits

WARNING

POWER MUST BE DISCONNECTED

BEFORE SERVICING THE APPLIANCE

ZV850 AND ZV750Y2

ORANGE

BROWN

12VAC

BLACK

TRANSFORMER

CONTROL PCB

8A250V - 5X20MM

ISOLATED
TRIAC

BLACK

GREEN

ORANGE

FM WIRING

WHITE

NEUT

GND

CN1

CN2

CN3 CN5

CN4B

CN4A

CN3

WHITE

FAN TOUCH PCB

DISPLAY
PCB

LIGHT TOUCH PCB

GEA00013

FILTER

MICRO-

SWITCHES
(ZV750)*

4 LAMPS

12V AC

20W

12.5 F

250V AC

MOTOR

MOTOR
CAPACITOR

CN5

CN4A

LINE

120V

WHITE

120V

FUSE

BROWN

(2) BLUE

RED

GREY

CN4B

CN2

GREY

MICROPROCESSOR
CIRCUIT

MOTOR
RELAYS

LOW VOLTAGE
POWER SUPPLY

VIOLET

WHITE

BLACK

BLUE

WHITE

BLACK

ORANGE

BLUE

RED

EMI

FIL

TER

RED

BLUE

WHITE

17 OHMS

8.5 OHMS

BLACK

GEA00064

FILTER
MICRO-
SWITCH

CN4A

G TO TRIAC GATE

MICROPROCESSOR

CIRCUIT

VIOLET

WHITE

Summary of Contents for Monogram ZV850

Page 1: ...C PUB 31 9043 03 00 MODEL SERIES TECHNICAL SERVICE GUIDE GE Consumer Service Training Monogram Wall Mounted and Island Hoods ZV750 ZV850 ...

Page 2: ...id 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 and pr...

Page 3: ...trol PCB Replacement 10 Entry Display Assembly Replacement 11 Filter Microswitch Replacement1 11 Fuse Replacement 12 Glass Visor Replacement 12 Motor Blower Assembly Replacement 13 Motor Capacitor Replacement 14 Transformer Replacement 15 Triac Replacement 16 Troubleshooting 17 Schematic Strip Circuits 18 Model ZV750 Illustrated Parts Breakdown 22 Model ZV850 Illustrated Parts Breakdown 24 Warrant...

Page 4: ...lings GEA00028 25 1 2 Recommended 36 Reference Height to Ceiling 8 1 4 35 3 8 27 1 2 Nomenclature Mini Manual Locator Label Nomenclature 25 1 2 Recommended 36 Min GEA00027 Mini Manual Locator Label Height to Ceiling ZV750Y1 Early model wall mounted hood ZV750Y2 Later model wall mounted hood with motor mount similar to Island mounted hood ...

Page 5: ...es Electrical Supply The vent hood must be supplied with 120V 60Hz electrical power and connected to an individual properly grounded branch circuit protected by a 15 or 20 ampere circuit breaker or time delay fuse Wiring must be 2 wire with ground If electrical supply does not meet the above requirements call a licensed electrician before proceeding Route wiring as close to the installation locati...

Page 6: ...c ducting Note Any home ventilation system such as a ventilation hood may interrupt the proper flow of combus tion air and exhaust required by fireplaces gas furnaces gas water heaters and other naturally vented systems To minimize the chance of interruption of such naturally vented systems follow the heating equipment manufacturer s guidelines and safety standards such as those published by NFPA ...

Page 7: ...trical power to light on and off Remembers the last light level used 7 Decrease Brightness Dims lights in 6 light levels 8 Increase Brightness Brightens lights in 6 light levels Display LEDs 9 Filter Cleaning Reminder Indicator Lights after 30 hours of on time to remind you to clean the metal grease filters The light blinks until the filters are replaced The timer resets automatically 10 Delayed S...

Page 8: ... is OK The harness in the hood can be used instead of the one supplied with the assembly by carefully removing the five screws from the enclosure assembly and unplugging the cable 2 CONTROL PCB This PCB has an AC to DC power supply microprocessor and fan relays and is located in the black box in the hood chimney area Note The 5 green connectors are locking type Use a small flat blade screwdriver t...

Page 9: ...attached by four screws from the top of the chassis The transformer is located next to the black box in Model ZV750 and above the grease filter in Model ZV850 7 HALOGEN LAMPS The 4 halogen lamps are the push in type and rated at 12V AC 20W The equivalent GE lamp is a Q20MR16 C CG40 BAB 8 FILTER MICROSWITCH The microswitch is mounted in the filter area When filters are removed the microswitch cause...

Page 10: ...ight will alert you when 30 hours have passed Remove the grease filters and wash them either by hand or in the dishwasher using nonabrasive soap Note If electrical power is lost the timer automati cally resets to 0 For proper operation be sure to use the lower set of filter channels to assure that the microswitch is set Hood Surface To clean the hood surface use hot soapy water then rinse and dry ...

Page 11: ...ing ensure that all electrical connections are securely fastened Filter Replacement Access to lighting and wiring 1 Grasp knob and push filter back into rear recess to release front edge of filter from track 2 Pull front edge of filter down 3 Pull filter toward you to remove GEA00007 Component Access Duct Cover Removal Model ZV750 Wall Mounted Hood Note A ladder or step stool is needed for the fol...

Page 12: ...ete Control PCB Replacement 1 Access black box refer to Component Access Duct Cover Removal 2 Disconnect motor capacitor connection from terminal CN3 3 Disconnect entry display assembly cable from terminal CN5 4 Disconnect filter microswitch and triac connector from terminal CN4A 5 Disconnect transformer and fuse connector from terminal CN4B 6 Replace control PCB with new control PCB Note When rei...

Page 13: ...odel ZV750Y1 is shown Model ZV750Y2 and later and Model ZV850 have only one filter microswitch 1 Disconnect electrical power to hood assembly 2 Remove 2 screws A and filter microswitch bracket B from fan 3 Remove 2 screws C and microswitch box from bracket 4 Remove microswitch D from microswitch box and cover 5 Disconnect wires from microswitch 6 Replace microswitch with new microswitch Note When ...

Page 14: ...or Replacement Note Model ZV750 hood has 1 glass visor and the ZV850 has 2 glass visors 1 Remove the plastic screws from the range hood 2 Remove glass visor s from hood GEA00032 Fuse Replacement WARNING The fuse is a 5 x 20 mm and is rated at 8 amps 250V AC Replace with fuse of the same rating only GE part number WB02X10584 GEA00119 Black Box Fuse Holder Fuse Holder ZV850 ZV750 Black Box ...

Page 15: ...lack box remove the following a 2 wire restraints 2 screws each b wires from motor to Control PCB unplug terminal CN1 c ground wire 7 Remove green ground wires from ground post 8 Remove the blower assembly from the hood 4 screws 9 Remove the split ring from around the motor wires and turn the plug sideways to remove Note Test motor before reinstallation Note When reinstalling ensure that all elect...

Page 16: ...ormer 4 Lamps Fan Motor Motor mtg 4 Hex Screws Use 9 32 Socket With Extension Entry Display Assembly Filter Microswitch Change Lamps GEA00004 Motor Capacitor Replacement 1 Access black box refer to Component Access Duct Cover Removal 2 Remove 4 screws and cover from black box 3 Unplug connector from control PCB connector CN3 and remove motor capacitor from black box 4 Replace motor capacitor with ...

Page 17: ...res from transformer Note Model ZV750 transformer does not have an external ground wire Model ZV850 trans former has an internal green ground wire attached to the lower ground screw 4 Remove the 2 screws nuts and the transformer from the hood assembly 5 Replace the transformer with a new transformer Note When reinstalling ensure that all electrical connections are securely fastened GEA00118 ZV750 ...

Page 18: ...rs from the triac 4 Remove 2 screws and the triac from the hood 5 Replace the triac with a new triac Note When reinstalling ensure that all electrical connections are securely fastened and in the correct location ref mini manual Triac Motor Capacitor Black Box Fuse Holder Control PCB Brown Orange Black 3 16 Terminal 1 4 Terminals GEA00016 ZV750 ZV850 Triac Motor Capacitor Black Box Fuse Holder Con...

Page 19: ...VE RE SEA T RIGHT FILTER ORDER INSTALL TRIAC ORDER INSTALL TRANSFORMER ORDER INSTALL ENTRY DISPLAY ASSEMBLY CONTROL PCBs CHECK MODIFY TRIAC CONNECTIONS ORDER INSTALL CONTROL PCBs FIX ORDER MOTOR FIX WIRING FIX WIRING REMOVE RIGHT FILTER ORDER INSTALL ENTRY DISPLAY SUBASSEMBLY NO NO NO NO NO NO NO YES NO NO NO NO NO NO YES YES YES YES YES YES YES NO YES YES YES YES NO NO YES YES YES HOOD CONTROL DE...

Page 20: ... CN3 WHITE FAN TOUCH PCB DISPLAY PCB LIGHT TOUCH PCB GEA00013 FILTER MICRO SWITCHES ZV750 4 LAMPS 12V AC 20W 12 5 F 250V AC MOTOR MOTOR CAPACITOR CN5 CN4A LINE 120V AC WHITE 120V FUSE BROWN 2 BLUE RED GREY CN4B CN2 GREY MICROPROCESSOR CIRCUIT MOTOR RELAYS LOW VOLTAGE POWER SUPPLY VIOLET WHITE BLACK BLUE WHITE BLACK ORANGE BLUE RED EMI FIL TER M RED BLUE WHITE 17 OHMS 8 5 OHMS 8 5 OHMS BLACK GEA000...

Page 21: ...NGE BLUE RED M GEA00064 FILTER MICRO SWITCH CN4A G TO TRIAC GATE MICROPROCESSOR CIRCUIT VIOLET WHITE GEA00024 FILTER MICRO SWITCH CN4A GREY G TO TRIAC GATE MICROPROCESSOR CIRCUIT VIOLET WHITE CN3 WHITE BLU RED 12 5 F 250 VAC MOTOR CAPACITOR FM WINDING GEA00022 A1 A2 G ORANGE BROWN 12 VAC 8A250V 5X20MM ISOLATED TRIAC GEA00023 CN4A FUSE BROWN 2 BLUE MICROPROCESSOR CIRCUIT BLACK BLUE BLUE ...

Page 22: ...WHITE NEUT GND LINE 120V AC CN2 EMI FILTER MICROPROCESSOR CIRCUIT FAN TOUCH PCB DISPLAY PCB LIGHT TOUCH PCB CN5 GEA00026 A1 A2 G ORANGE 12 VAC 8A250V 5X20MM TRANSFORMER ISOLATED TRIAC CN4A FUSE BROWN 2 BLUE MICROPROCESSOR CIRCUIT BLACK BLUE FAN TOUCH PCB DISPLAY PCB LIGHT TOUCH PCB CN5 BLACK NEUT LINE WHITE 120V CN4B CN2 CN2 LOW VOLTAGE POWER SUPPLY ...

Page 23: ... 21 Notes ...

Page 24: ... 22 Model ZV750 Illustrated Parts Breakdown ...

Page 25: ...TED CIRCUIT BOARD WB27X10004 170 FUSE WB02X10646 171 FUSE HOLDER WB02X10647 195 BRACKET WB02X10399 199 CERAMIC INSULATION BASE WB02X10400 200 DICHROIC LAMP PROTECTION WB08X10001 202 REFLECTOR STOP WB02X10401 203 BLOCKING WB07X10006 208 TRANSFORMER WB17X10002 223 SWITCH BUTTON WB03X10001 227 DISPLAY CONTROL ASSY WB27X10364 250 RING NUT WB01X10002 252 MICROSWITCH BOX WB07X10003 253 MICROSWITCH WB24X...

Page 26: ... 24 Model ZV850 Illustrated Parts Breakdown ...

Page 27: ...19 UPPER DUCT 10 FT CEIL WB38X10033 133 IMPLEMENT HOLDER WB03X10085 166 PRINTED CIRCUIT BOARD WB27X10004 170 FUSE WB02X10646 171 FUSE HOLDER WB02X10647 195 BRACKET WB02X10399 199 CERAMIC INSULATION BASE WB02X10400 200 DICHROIC LAMP PROTECTION WB08X10001 203 BLOCKING BRACKET WB07X10339 208 TRANSFORMER WB17X10002 223 SWITCH BUTTON WB03X10001 227 DISPLAY CONTROLASSY WB27X10345 250 RING NUT WB01X10002...

Page 28: ... 26 Notes ...

Page 29: ... the product please contact your dealer or our Consumer Affairs office at the address below or call toll free GE Answer Center 800 626 2000 consumer information service Replacement of house fuses or resetting of circuit breakers Replacement of the replaceable filters Damage to the product caused by accident fire floods or acts of God Failure of the product if it is used for other than its intended...

Page 30: ...ecure feeling that GE Consumer Service will still be there after your warranty expires Purchase a GE contract while your warranty is still in effect and you ll receive a substantial discount With a multiple year contract you re assured of future service at today s prices Individuals qualified to service their own appliances can have parts or accessories sent directly to their home The GE parts sys...

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