Electric Wall Oven Service Manual

ManualsBrandsJenn-Air ManualsOvenEXPRESSIONS W27400

Jenn-Air

ElectricWall Oven

ServiceManual

16009721

Issued7/99

Summary of content (51 pages)

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Jenn-Air ElectricWall Oven Service Manual 16009721 Issued7/99
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SAFETY PRECAUTIONS This service information is intended to be used by a qualified service technician who is familiar with proper and safe procedures to be followed when repairing any electrical appliance. All tests and repairs should be performed by a qualified service technician who is equipped with proper tools and measuring devices. All replacements should be made by a qualified service technician using only Maytag Appliances Sales Company replacement parts.
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INTRODUCTION The manual is printed in a loose format and is divided into sections relating to a general group of components and/or service procedures. Each section is further subdivided to describe a particular component or service procedure. The subdividing of the subject matter, plus the loose leaf form, will facilitate the updating of the manual as new or revised components are added or new models are introduced.
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NOTES Introduction 16009721 @1999 Maytag Appliances Sales Company ii
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CONTENTS GENERAL SAFETY PRECAUTIONS ................................................................................................... INTRODUCTION ................................................................................................................................. CONTENTS ........................................................................................................................................ i ii iv SECTION 1. COMPONENT DESCRIPTION ............................................
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CONTENTS CONT. JJW8527, JJW8530, JJW9527, JJW9530, ................................................................................. JMW8530, JMW8527, JMW9527, JMW9530 ............................................................................ JJW8627, JJW8630, JJW9627, JJW9630 .................................................................................. JJW8530, JJW9530 - Canadian Models ....................................................................................
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SECTION 1. COMPONENT DESCRIPTION COMPONENTS Meat Probe: Senses the internal temperature of products during a baking function. The meat probe is an NTC, or negative temperature coefficient, which means the resistance value decreases as the temperature increases. See meat probe chart below for resistance values. MEAT PROBE Type: NTC Thermistor Calibration: 9938 ohms (150°F.) PROBE RESISTANCE VS. TEMR TABLE Degrees E Resistance 122 18963 ohms 150 9938 ohms 156.2 8846 ohms 165.2 7456 ohms 210.
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resistance of resistance of mately 1654 monitors the the sensor the sensor ohms. The resistance increases. The at 350°F is approxielectronic control value of the sensor and cycles the oven heating elements off. As the temperature in the oven decreases, the resistance of the sensor decreases. At a predetermined temperature setting, the electronic control will initiate another heating cycle in the oven elements. See oven sensor chart at right for resistance values.
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FAULT CODES PROBLEM COMPONENTS TO CHECK F1 Power to element relay activated J1, J2 wire harness connection to control shorted. If during time of day display, checks ok, change control. F2 Over temperature F3 Open sensor. Ohm sensor. F4 Shorted sensor. Ohm sensor. F5 Over temperature Ohm sensor. Check connection of sensor wire harness. F7 Shorted Stuck Function Key on control. F9 Door Code Ohm TEST SENSOR. If checks ok, change control. sensed key Check Latch Assembly.
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FAULT CODES PROBLEMS COMPONENTS J2 harness F1 POWER TO ELEMENT RELAY ENERGIZED DURING TIME OF DAY DISPLAY. Over temperature sensed; shorted. If checks ok, change (PRB) power relay board. Note: For double oven only, change second oven board. over 620 F2 sensed by control in time of day mode, bake mode, or over 950 sensed in clean mode. Ohm sensor. If checks ok, change power relay board. "See chart for sensor value.
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SECTION 2. COMPONENT ACCESS OVEN DOOR REMOVAL The following are instructions to access, repair and replace components of the slide-in . range. The unit is more accessible if it is removed from the installed position procedures begin. -- Open the oven door as wide as possible. before servicing , IMPORTANT I DISCONNECT FROM POWER SOURCE BEFORE SERVICING APPLIANCE. [ I .
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For JJW Models: 3. 1. Lay oven door on a protected surface with the inner door panel facing down. To reassemble the oven door, reverse the procedures for disassembling. COOLING FAN ACCESS 2. 3. 4. Remove the three screws at the top and the three at the bottom of the door, see Figure 2-2, To access the cooling fan, remove two 1/4" hex screws from the bracket which the fan is mounted on. Tilt motor and bracket to Grasp the door assembly at the bottom and lift the assembly off the front door glass.
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Oven Light 3. Bulb can be replaced or accessed by turning the lens counterclockwise to remove the Grasp the front flange of the oven liner and gently pull forward to remove oven liner from insulation and structure. entire oven light. The socket can be removed by depressing the spring clips from the rear of the light socket end pushing it into the oven cavity.
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160(;9721 01999 Maytag Appliances Sales Company COMPONENT ACCESS 2-4
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SECTION 3. TROUBLESHOOTING Test Access The test mode can be accessed by holding the stop time key down at power up or by holding the stop time key down for 10 seconds within 5 minutes of power up mode, No other key can be pressed before the stop time key, that would block the test mode access. Test Exit Exit the test mode by pushing the cancel key or test will self-terminate after 16 seconds from the last key command chosen.
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Stop Time Key Will activate the beeper 100% as long as the key is pressed. Also, it will display the control I.D. # in the blue time digits and the power relay board I.D. # in the red temperature digits. Clock Key Activates all display segments to light. Cook Time Key Activates any fault codes stored in the memory. The time digits display any fault codes for the membrane and control board. The temperature digits display any fault codes for the power relay board.
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User Selectable Options Display Codes Display Code Deg.
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Fault Code Problem Components to Check F1 Power to element relay energized during time of day display, J2 harness shorted; If checks ok, change (PRB) power relay board. NOTE: For double oven only, change second oven board. F2 Over temperature sensed; over 620 ° sensed by control in time of day mode, bake mode, or over 950 ° sensed in clean mode. Ohm SENSOR. If checks ok, change )ower relay board. "See chart for sensor value." F3 Cooling fan on with no oven function selected.
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TROUBLESHOOTING Power Board Voltage J1-1 Resistance Ref. Point Comments 0.0 Vdc J1-1 Signal Ground J1-2 13.0 Vdc J1-1 +12 Vdc Source J1-3 21.2 VAC J1-4 J2-1 5.0 Vdc J1-1 J2-1 0.0 Vdc J1-1 J2-2 5.0 Vdc J1-1 J2-2 0.0 Vdc J1-1 J2-3 0,0 Vdc J1-1 J2-3 2,8 Vdc J1-1 J2-4 0.0 Vdc J1-1 Time of Day Mode J2-4 2.8 Vdc J1-1 Cooking Mode Active Oven 2 J2-5 1.2 VAC J1-1 Serial Clock Line J2-6 1.3 VAC J1-1 Transmit Line J2-7 2.
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Resistance Ref. Point Power Board Voltage J7-4 2.8 Vdc J1-1 J7-5 0.0 Vdc J1-1 J7-5 2.3 VAC J1-1 Cooking Mode Active Oven 2 J7-6 1.2 J1-1 Serial Clock Line J7-7 0.0 Vdc J1-1 J7-7 2.8 Vdc J1-1 Cooking Mode Active Oven 2 J7-8 0.0 Vdc J1-1 Signal Ground J8-1 12.0 Vdc J1-1 +12 Vdc Source J8-2 12.0 Vdc J1-1 Door 1 Closed J8-2 0.0 Vdc J1-1 Door t Open J8-3 0.0 Vdc J1-1 Door 1 Unlocked J8-3 12.
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Control Head Voltage Resistance Ref. Point Comments J1-1 0.0 Vdc J1-1 Signal Ground J1-2 13.0 J1-1 +12 Vdc Source J1-3 21.2 VAC J1-4 J2-1 5.0 Vdc J1-1 J2-1 0.0 Vdc J1-1 J2-2 5.0 Vdc J1-1 J2-2 0.0 Vdc J1-1 J2-3 0.0 Vdc J1-1 J2-3 2.8 Vdc J1-1 J2-4 0.0 Vdc J1-1 J2-4 2.8 Vdc J1-1 Cooking Mode Active Oven 2 J2-5 1.2 VAC J1-1 Serial Clock Line J2-6 ,1.3 VAC J1-1 Transmit Line J2-7 2.
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MULTIPLEXING TST Imm| CIRCUITRY-WALL I DISPLAY OVENS ._ J1 MAIN POWER BOARD SENSOR !r i OVEN J9 LOWER OVEN SENSOR E_L VCC REFERENCE -_ KEY M OVEN POWER BOARD (DOUBLE OVEN ONLY) DOOR LOCK ,b UNLOCK m VCC REFERENCE -.
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POWER RELAY BOARD CONNECTIONS TO DISPLAy BOARD TO L1 _ TO DOOR J9 N TO OVEN UGHT D NCor-USED NEU'm_ N OVEN I SENSOR "--_OVLT T° n.-.. r,i TO DISPLAY BOARD TO UNIT USED BROIL L.-.J B_ TO l :..i L2 DRLK _]_ CVRST []_ CVBAK _ BAKE T TO L2 UNIT CONVECTION MOTOR SLOW SPEED 16009721 LOCK MOTOR COOL 1.
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DISPLAY BOARD CONNECTIONS DISPLAY BOARD TO POWER RELAY BOARD J1 J J2 ) MEMBRANE SWITCH TAIL TO POWER RELAY BOARO J2 CIRCUIT BOARD CONNECTIONS l_l o,sPLAv.oA.
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MEMBRANE CONNECTIONS PAD CIRCUIT 1 15to 4 2 14to 4 3 13to4 4 12to4 5 11to4 5 10to 4 7 9to4 8 8to 4 9 7to 4 0 6to4 LO BAKE 15 to 16 LO BROIL 14 to 16 LO CLEAN 13 to 16 TIMER ONE 14to 5 STOP TIME 13to5 CLOCK 12to 5 PROBE 11to5 OVEN LIGHT 10to5 TIMER TWO 9to 5 COOK TIM E 8to5 UPPER BAKE 10to3 UPPER BROIL 9to 3 UPPER CLEAN 8to 3 UPPER CONVECTION BAKE 7to3 UPPER CONVECTION ROAST 6to3 UPPER CANCEL 1 to2 LOWER CANCEL 1 to 17 Membrane Switch: The means to ma
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POWER RELAY BOARD-DOUBLE WALL OVEN TO DISPLAY BOARD TO L1 TO UPPER OOOR LOCI< TO LOWER DOOR LOCK IpRTOB JACK J1 N J5 J8 J3 TO NEUTRAL J9 TO OVEN LIGHTS J10 TO | LOWER OVEN .J SENSOR / TO "m--_IuPPER OVEN ]SENSER DITOsPLAY J2 TO UPPER BROIL UNIT JBOARD TOuxILLARy RELAY BOARD DRLK _-- L2 COOL D CVRST _-- 1.
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AUXILLARY RELAY BOARD-DOUBLE WALL OVEN TO L1 L1 TO NEUTRAL L1 N To D LOWER DOOR LOCK MOTOR N DRLK RELAY TO BOARD TO LOWER BAKE UNIT L2 L2 -2 BROIL T.
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CIRCUIT BOARD CONNECTIONS-DOUBLE WALL OVEN TO UPPER DOOR LOCK TO LOWER TO L1 J1 J5 J8 J3 J9 TO NEUTRAl TO OVEN OVLT JlC NOT USED TO UPPER.,dI. BROIL-UNIT J2 BROIL \ CVBAKI CWSTIR TO UPPER BAKE UNIT L.TO TO t CONVECTION MOTOR SLOW SPEED _ I MOTOR Oo.
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ELECTRONIC CONTROL PROGRAMMABLE TEMPERATURE 1) 2) 3) 4) OFFSET CHANGES CHANGE: Program bake above 500 degrees F Repress bake pad and hold for 3 to 4 seconds The digital keys can be used to offset between 0 to 35 degrees in increments of 5 degrees. The broil key is used to toggle between positive and negative offsets.
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While in the test mode the following outputs may be checked: Bake Pad- Press the pad in the test mode and the bake relay will be activated. Broil Pad- Press the pad in the test mode and the broil relay will be activated. Convect Bake Pad- Press the pad in the test mode and the convect bake relay will be activated. Convect Roast Pad-Press the pad in the test mode and the convect roast relay will be activated. Oven Light Pad- Press the pad in the test mode and the oven light relay will be activated.
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USER SELECt'ABLE OPTION DISPLAY CODES DISPLAY CODE DEG C 24 HR CLOCK CONTINUOUS EOC 60 HZ REFERENCE F X X X X X X X X X X × E D X C B X A 9 X X X X X X 8 7 X X X X J1, J2 wire harness connection to co ntro I X X shorted, If checks ok, change control.
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DOOR LOCK SWITCH CODES DISPLAY CODES UNLOCKED SWITCH LOCKED SWITCH DOOR CLOSED SWITCH 7 CLOSED CLOSED CLOSED 6 OPEN CLOSED CLOSED 5 CLOSED OPEN CLOSED OPEN OPEN OPEN 3 CLOSED CLOSED OPEN 2 OPEN CLOSED OPEN 1 CLOSED OPEN OPEN 0 OPEN OPEN OPEN To test the control the following should be performed: i !4 For JJW Models Bake Pad- Touch the bake pad then touch the auto set pad within 4 seconds of each other. The bake relay should engage and the element start to heat.
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SECTION 4.
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W27100 DOOR ACTUAT[O SWI TCH[S L1 BROIL [LEI/4E)IT BAK£ EL [I_IENT L2 ,:I'_A_V'-I= • .... d ,____. __1 m2_ 9gA I '--i i J,.. Ml _O_qAV[ I_JTLET C(_IV_CT _-_ HI LIMIT " O00R J ON _-_ ® _I1 (_. ACTUAT[D OVE_N LIGHT SWITCH :-_:] __J -- NOTI C(: I. DIS_kt[CT RAN(_ _ FOAER II_FI_( REMOVING Wll_ ¢OV(R. 2, IRFER ONLy TO F[AI_A[$ (_A_IpplEI_, ,_:_l_: i $, """_ _ °"_" "_' TM ALL liES PIIIQR TO OI_[CTION S_RVlCING CQI_TR_LS. II_IN_ PII_eLDA$ CAM _ IMP_O_R AND _ CPIE_ATION.
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W27200, W30100, WM27160, WM27260 L.i N L_ JLUG_ I //9 ..... _- *e €_cl tw _--'-_''I N[UlI_ L_._L CC_S r ................
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W272000 W30100, WM27160, WM27260 L1 RELCiY BOleRO 0 OlA_AH P/N 208S_F 16009721 WIRING DIAGRAM ©1999 Maytag Appliances Sales Company 4*5
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W27400, W30400, W30400R WM27460, .t WM30460 9 I _. I fill__ • ai I •" / t -._ iI !l illi ill>! i 2 I" I _k I !i,0! ° ;i_ I ,°,''_,," ti_r-'-L-I ,T, , it '" _,7_ i._ _l xt,..
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WW27110, WW30110 BLOCK L1 r ....... ,,-----_; I L ...... TH[RIdO5 ,_A%. • BROIL ELI_IEt_I L 1_'4T d TAT ,._-_, HI-LIMIT SWITCIt .... J ELE NT LIMIT O00fl ACTUATED s_2 T_C"_ . .o I_ L_O_ L_ I I OFF _'_L CLEAN [X_R ACTUATE{} SW_ TCH i NO_ OPEN OF_H L SNIT_[5 UI_,OCKE0 NO/COU I CLO3ED I CLO_ED N LIHI[ R_LAy I r_R9 I_ _ I SEE NOT[ S[ CONTACTS LIH( 1 I I .*I_A_ £ I _N I SEE NOTE _ _F _TE , 1 3 _-Ir_Tc_(c_Es so S_C_OS, s S_CO_DS _01L ONLy.
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WW27210 LI ILa_( N ! L2 IBI _qLUI .J Nt.
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WW27430, W27430R WW30430, WW30430P | 0 16009721 WIRING DIAGRAM @1999 Maytag Appliances Sales Company 4-11
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WW27430, W27430P, WW30430, WW30430P PlD_V tm_mwlm ml mw_ m V.B,jt _ LI I,_lf m n_v to ¢m,111_ w L P_ KLAV _m N=_O° _ _,,_ m. ._.l_ _u =_,._ _J- _,",_'° . _ _q_ Ay =_. I_,,.
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JJW8527, JJW8530, JJW9527, JJW9530, JMW8530, JMW8527, JMW9527, JMW9530 i i ii 16009721 WIRING DIAGRAM €1999 Maytag Appliances Sales Company 4-13
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JJW8527, JJW8530, JJW9527, JJW9530, JMW8530, JMW8527, JMW9527, JMW9530 N L1 1.2 REO "_N$FORF4ER _w TO CO_d1ROL IW__MGN LI_LOO_O MICRQWA'_ RE_PTACU[ B_UI'_YPLuG J3 I BK _KI AMp I t._.--r--_ J I ..... .m PPP OROL_UGD NEUIRAL CHECI( LGP.,ALCOOES RELAY OBJEEN PLU_ JlO ..L O..i RNSO m LIMIT 8K :.F'_ ikq OiL PCB RELAY Q 0 MOTO R _J O_fN ELEMENT f .. _ _-_ LI_tT CI_AL_;_E NT SYMBOLS00 NOT REFLECTI_U_ CONtqOURATION. NJ. f_r_EDt.
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JJW8627, JJW8630, JJW9627, JJW9630 i I i Z m a I I I I i I I j _ I I o................
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JJW8627, NO_lm: i, E_llm UNB mmum_r JJW8630, _ JJW9627, JJW9630 iqum_t, L1 N L2 V4UTE NED m may To _ern_. UAIL_XI_ mcAa_w ION _ .......... mtmA_(D mUllt_ CHECKL_r_. C_ 4=OaLINGr._q l_w... _a.._..ji_.. M r,' R w _- mm_11mw c_ncL_ MA_( w_ m R C_CU_ N Om N x • x • x • x x _'_L SPECIFIC WIRING DIAGRAM P/N 208512F 16009721 CYCLE RATES FOR EACH MODEbSPECIFIC ELEMENT IS FROM SERVICE.
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JJW8530, JJW9530 - CANADA MODELS ! ! I I I I I I I I I I I I I I I I 0 16009721 WIRING DIAGRAM @1999 Maytag Appliances Sales Company 4-17
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JJW8530, JJW9530 _ - CANADA MODELS ca_ m • X, IN0_GATES RELAy CONTROLS M_ M_SO_ = OPIER_.TI_N OFF Rv.opP oq W m DL6 I L1 ! Ot_ SPECIFIC CYCLE RATES FOR EACI" MODE 6 SPECIFIC ELEMENT IS AVAILABLE FROM SER_ po_ U OOORL_ L2 LIE BR_L LZ B_(E LZ C/WE L2RS 1 X LZ OVUGHT LOCI .q/L_ Lee= Door Ewhd_ _ p_d X X L_,_ BAKE X TIMED B/_JE X _'_: Cv,_,, c_. swk_h x x COt_'vlECT BAKE X _;_: c_*,. cyd. ,_' _,.,.
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