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Jenn-Air
ElectricWall Oven
Service Manual
16009721
Issued 7/99
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SAFETY PRECAUTIONS This service information is intended to be used by a qualified service technician who is famil- iar 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. Improper assembly or adjustment
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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. Each page of the manual will be identified in the lower, right-hand corner, and
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NOTES 16009721 Introduction ii @1999 Maytag Appliances Sales Company
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CONTENTS GENERAL SAFETY PRECAUTIONS ................................................................................................... i INTRODUCTION ................................................................................................................................. ii CONTENTS ........................................................................................................................................ iv SECTION 1. COMPONENT DESCRIPTION ..................................
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CONTENTS CONT. JJW8527, JJW8530, JJW9527, JJW9530, ................................................................................. 4-13 JMW8530, JMW8527, JMW9527, JMW9530 ............................................................................ 4-13 JJW8627, JJW8630, JJW9627, JJW9630 .................................................................................. 4-15 JJW8530, JJW9530 - Canadian Models .................................................................................... 4-
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SECTION 1. COMPONENT DESCRIPTION COMPONENTS Meat Probe: Senses the internal tempera- unsafe condition is present, shuts the sys- ture of products during a baking function. tem down and displays the appropriate fault The meat probe is an NTC, or negative code. Fault codes are covered in product temperature coefficient, which means the specifications sections 3 and 4. resistance value decreases as the tempera- Touch Sensor Technology: With this new ture increases. See meat probe chart below for re
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resistance of the sensor increases. The OVEN SENSOR resistance of the sensor at 350°F is approxi- Sensor Type: Calibration: mately 1654 ohms. The electronic control RTD 1000 ohm platinum 1654 ohms (350°E) monitors the resistance value of the sensor OVEN SENSOR RESISTANCE VS. TEMP. TABLE and cycles the oven heating elements off. As the temperature in the oven decreases, Degrees E Resistance the resistance of the sensor decreases. At a 100 1143 ohms predetermined temperature setting, the electroni
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FAULT PROBLEM COMPONENTS TO CHECK CODES Power to element relay activated J1, J2 wire harness connection to control shorted. If F1 during time of day display, checks ok, change control. F2 Over temperature sensed Ohm TEST SENSOR. If checks ok, change control. F3 Open sensor. Ohm sensor. F4 Shorted sensor. Ohm sensor. F5 Over temperature Ohm sensor. Check connection of sensor wire harness. F7 Shorted key Stuck Function Key on control. F9 Door Code Check LatchAssembly. For Models: W27100, W27200, W
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FAULT CODES PROBLEMS COMPONENTS TO CHECK J2 harness shorted. If checks POWER TO ELEMENT RELAY ENERGIZED ok, change (PRB) power relay F1 DURING TIME OF DAY DISPLAY. board. Note: For double oven only, change second oven board. Over temperature sensed; over 620 F2 sensed by control in time of day mode, Ohm sensor. If checks ok, bake mode, or over 950 sensed in clean change power relay board. mode. "See chart for sensor value." F3 Cooling fan on with no oven function Ohm sensor, wire harness to sele
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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 . Open the oven range. door as wide as The unit is more accessible if it is removed possible. from the installed position before servicing , Place an 1/8" procedures begin. pin in the hole on the right and -- IMPORTANT I left door hinges, DISCONNECT FROM POWER SOURCE [ see Figure 2-1, BEFORE SERVICING APPLIANCE. I . Remove the screws from each side with a CONTROL
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For JJW Models: 3. To reassemble the oven door, reverse the procedures for disassembling. 1. Lay oven door on a protected surface with the inner door panel facing down. COOLING FAN ACCESS 2. Remove the three screws at the top and the three at the bottom of the door, see To access the cooling fan, remove two 1/4" hex screws from the bracket which the fan is Figure 2-2, mounted on. Tilt motor and bracket to allow it to pass through main back panel. 3. Grasp the door assembly at the bottom and lift
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Oven Light 3. Grasp the front flange of the oven liner and gently pull forward to remove oven Bulb can be replaced or accessed by turning liner from insulation and structure. the lens counterclockwise to remove the entire oven light. The socket can be removed NOTE: When replacing oven cavity, use by depressing the spring clips from the rear pieces of sheet metal on sides and top of of the light socket end pushing it into the oven liner to allow cavity installation oven cavity. without tearing or
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160(;9721 COMPONENT ACCESS 2-4 01999 Maytag Appliances Sales Company
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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. Test Function Test mode is perfomed by pushing a keypad and testing for
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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. NOTE: If"FO" is disDlaved, there
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User Selectable Options Display Codes 24 Hour Continuous 60 Hz Display Deg. C Code Clock EOC Reference X X X F X X E X X D X X X C X X B X X X A X X 9 X X 8 X 7 X x X 6 X X 5 X X 4 x 3 X x 2 X 1 X 0 Door Lock Switch Codes Unlocked Locked Door Closed Display Code Switch Switch Switch 7 closed closed closed 6 closed open closed 5 closed closed open 4 open open open 3 closed closed open 2 open closed open 1 closed open open 0 open open open 16009721 TROUBLESHOOTING 3-3 @1999 Maytag Appliances Sales
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Fault Code Problem Components to Check F1 Power to element relay energized J2 harness shorted; If checks ok, during time of day display, change (PRB) power relay board. NOTE: For double oven only, change second oven board. F2 Over temperature sensed; over 620 ° Ohm SENSOR. If checks ok, change sensed by control in time of day mode, )ower relay board. bake mode, or over 950 ° sensed in "See chart for sensor value." clean mode. F3 Cooling fan on with no oven function Ohm SENSOR, wire harness to se
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TROUBLESHOOTING Power Board Voltage Resistance Ref. Point Comments J1-1 0.0 Vdc J1-1 Signal Ground J1-2 13.0 Vdc J1-1 +12 Vdc Source J1-3 21.2 VAC J1-4 T1 Secondary J2-1 5.0 Vdc J1-1 J2-1 0.0 Vdc J1-1 Press Cancel 2 J2-2 5.0 Vdc J1-1 J2-2 0.0 Vdc J1-1 Press Cancel 1 J2-3 0,0 Vdc J1-1 Time of Day Mode J2-3 2,8 Vdc J1-1 Cooking Mode Active Oven 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
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Power Board Resistance Ref. Point Comments Voltage J7-4 2.8 Vdc J1-1 Door Lock Limit J7-5 0.0 Vdc J1-1 Time-of-Day Mode Cooking Mode Active J7-5 2.3 VAC J1-1 Oven 2 J7-6 1.2 J1-1 Serial Clock Line J7-7 0.0 Vdc J1-1 Time-of-Day Mode Cooking Mode Active J7-7 2.8 Vdc J1-1 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 0.0 Vdc J8-3 J1-1 Door 1 Unlocked J8-3 12.0 Vdc J1-1 Door 1 Locked J8-4 Open Pin J8-5 12.0 Vdc
