TechSheet-W10538797-RevA
Tech Sheet FOR SERVICE TECHNICIAN’S USE ONLY

Do not discard

DANGER WARNING

Electrical Shock Hazard Electrical Shock Hazard Disconnect power before servicing. Only authorized technicians should perform diagnostic Replace all parts and panels before operating. voltage measurements. Failure to do so can result in death or electrical shock.

After performing voltage measurements, disconnect power before servicing.

Failure to follow these instructions can result in death or electrical shock.

Voltage Measurement Safety Information

When performing live voltage measurements, you must do the following: Verify the controls are in the off position so that the appliance does not start when energized. Allow enough space to perform the voltage measurements without obstructions. Keep other people a safe distance away from the appliance to prevent potential injury. Always use the proper testing equipment. After voltage measurements, always disconnect power before servicing.

Temperature Adjustment (All MRC Controls)

NOTE: On models with a numeric keypad on the control, press the “3” key instead of the “up” arrow or “+” (plus) keypad. Press the “6” key instead of the “down” arrow or “-” (minus) keypad. On some models, press the OFF keypad if there is not a CANCEL keypad.

Step Function Keypad Pressed Notes

1 Temperature adjustment Press OVEN LIGHT for 5 seconds The current offset is shown in the display, or 0° if there is no offset.

2 Temperature adjustment options (Depending on model) Adjust temperature in 5°F (3°C) increments. The range can be set between 30°F (18°C) and -30°F (-18°C). Temp/Time or Temp/Hour

Press “MORE” or “LESS” arrow keys Bake temperature adjustment cannot result in or operating temperatures higher than 550°F (288°C) or lower than 170°F (77°C), as measured at the oven center.

Press “+” (plus) or “-” (minus) keypads The broil temperature is automatically offset the same

as the bake temperature.

3 Activate temperature adjustment Press START Desired temperature adjustment is activated. If Start is not pressed within 1 minute, adjustment is ignored.

W10538797A FOR SERVICE TECHNICIAN’S USE ONLY

FOR SERVICE TECHNICIAN’S USE ONLY

Diagnostics Mode for MRC Control

IMPORTANT: You must run an Auto Test before performing any other diagnostics. Refer to steps 1 through 4 in the following chart to run Auto Test. Press CANCEL at any time to exit.

NOTE: On models with a numeric keypad on the control, press the “3” key instead of the “up” arrow or “+” (plus) keypad. Press the “6” key instead of the “down” arrow or “-” (minus) keypad. On some models, press the OFF keypad if there is not a CANCEL keypad.

Step Key Press Control Display

1 CANCEL > CANCEL > START “TEST ON” with cavity temperature and door position, “UO” = Oven door closed or “UI” = Oven door open

2 Press the “up” arrow, the “+” (plus) key or the “3” key to scroll through the service “AUTO TEST” modes to Auto Test.

3 Follow the display prompts to run Auto Test to observe the following results:

Result #1 – Do not replace the control. “Control is GOOD, no faults found”

Result #2 – Tests completed with failure/fault codes. Failure/Fault codes are listed in scrolling text.

NOTE: Failures are problems within the control. Faults are problems beyond the control (for example, “0 Failures and 2 Faults found – Control is good.” There is a problem with a wiring harness, wiring connection or component outside the control).

4 Press CANCEL to exit. Refer to the “Failure/Error Display Codes” section to correct.

Service Modes for MRC Control

Press CANCEL>CANCEL>START to enter Service Mode.

NOTE: On models with a numeric keypad on the control, press the “3” key instead of the “up” arrow or “+” (plus) keypad. Press the “6” key instead of the “down” arrow or “-” (minus) keypad. On some models, press the OFF keypad if there is not a CANCEL keypad.

Step Service Mode Service Mode Description

Upon TEST ON Perform relay checks. See the “Relay Checks for MRC Control” section. Press the key that is listed in the “Key Press” entry column for the desired function and display. Display shows oven temperature from oven temperature sensor and door position (0-closed, 1-open).

1 USAGE Displays the usage time in hours for several range functions.

2 ENG MODE Press START to enter, and then press the “+” keypad. Press START again, and the display will show the temperature of

the oven sensor. Press the TIMER SET/OFF keypad to scroll between the oven sensor temperature, the warming

drawer sensor temperature and the control board sensor temperature. Press CANCEL twice at any time to exit.

3 TEST MODE Perform relay checks. See the “Relay Checks for MRC Control” section. Press the key that is listed in the “Key Press”

column for the desired function.

4 VERSION Displays software version.

5 DISPLAY Displays all MRC control LEDs.

6 CONTROL RESET DO NOT USE this Service Mode – for Engineering Use Only.

7 FAULTS Displays the most recent fault code. The last 10 faults are stored and may be cleared by following the prompts. Clear faults as directed by pressing START TIME or DELAY START.

8 RELAY USAGE Displays the usage time in hours for several range functions.

9 AUTO TEST Automatic diagnostics mode that must be run before performing any other diagnostic or before replacing the control.

Relay Checks for MRC Control

NOTE: Relays are activated from the TEST ON service mode. Press CANCEL at any time to exit. Some of the functions listed below may not be on your range.

Function Key Press Description Display

Bake relay BAKE Turns Bake element ON. Press again to turn Bake element OFF. b

Broil relay BROIL Turns Broil element ON. Press again to turn Broil element OFF. r

Convect CONVECT or Turns convection element ON. Press again to turn convection element OFF. c relay CONVECT BAKE

Warming WARM DRAWER (on some Turns warming drawer element ON. Press again to turn warming drawer

drawer relay models) element OFF.

Oven light OVEN LIGHT Turns oven light ON. Press again to turn oven light OFF. relay

Latch motor PRECISE CLEAN or Press to lock the door (motorized door latch [MDL]). Press again to unlock the door. UO (MDL unlocked) LO (MDL locked) relay SELF CLEAN

Convection RAPID PREHEAT, Turns convection fan ON. Press again to turn convection fan OFF. H

fan relay CONVECTION ROAST or

COOK TIME

Warming WARM ZONE ON or Turns warming zone element ON. Press again to turn warming zone element OFF. WZ zone relay WARMING CENTER ON

All elements (depending on which cycle is being used) will operate On electric models, the DLB (double line break) will engage on with the oven door open. entering the Diagnostics Mode and disengage on exit.

Latch motor will not cycle with oven door open.

2

FOR SERVICE TECHNICIAN’S USE ONLY

Failure/Error Display Codes

Display Codes Likely Failure Condition Suggested Corrective Action Procedure EEPROM comm error F1 E0 Sensor out of range 1. Press CANCEL>CANCEL>START to enter the Diagnostics Mode and verify the error PCB thermistor open or shorted code. E5 Keypad disconnected Stuck key 2. If an F1 error code is displayed, unplug range or disconnect power. Replace the oven E7 Cancel key error control and then go to Step 4.

F2 E0 Main sensor open or shorted 3. If an F2 error code is displayed, unplug range or disconnect power. Replace the user interface (keypad membrane) and then go to Step 4. E1 Oven Sensor 4. Replace all parts and panels before operating. E2 Warming drawer sensor open or shorted 5. Plug in range or reconnect power. F3 E0 Warming Drawer Sensor 6. Verify operation is normal. Go to the Diagnostics Mode and scroll to the Faults display to Oven Control/ GY clear faults. MRC GY 1. Press CANCEL>CANCEL>START to enter the Diagnostics Mode. At the first screen, P10-1 V Door and switches do not agree verify the main oven sensor temperature readout. If it is available, verify the warming P10-2 (Clean mode – on some models) drawer sensor temperature readout.

F3 E2 Door Position Switch 2. Continue in the Diagnostic Mode to verify the error code. Y Oven Control/ 3. If an F3E0 error code is displayed and the main oven sensor temperature reading is near MRC room temperature, unplug range or disconnect power. Replace the main oven sensor, as a failure at high temperature may be the cause of the fault. Then go to Step 9. If the sensor P10-3 GY does not read room temperature, go to Step 5. P10-4 4. If an F3E2 error code is displayed and the warming drawer sensor temperature reading is GY near room temperature, unplug range or disconnect power. Replace the warming drawer sensor, as a failure at high temperature may be the cause of the fault. Then go to Step 9. If F5 E0 the sensor does not read room temperature, go to Step 5.

Oven Control/ 5. Check all sensor connections on the harness and board. MRC 6. Disconnect sensor from the harness. P7-5 Y 7. Measure the oven sensor resistance (between connector pins). It should read between 1,000Ω and 1,200Ω. Measure the resistance from the sensor connector pins to the sensor P7-4 casing for a possible short. If the resistance measurement is out of range, or if a short is Y found, replace the sensor.

8. Inspect the wire and connectors from the control to the sensor. If any damage is noted, replace the harness.

9. Replace all parts and panels before operating.

10. Plug in range or reconnect power.

11. Verify operation is normal for longer than 1 minute. Go to the Diagnostics Mode and scroll to the Faults display to clear faults.

1. Press CANCEL>CANCEL>START to enter the Diagnostics Mode and verify the error code.

2. Press the CANCEL/OFF key. Press CANCEL>CANCEL>START to re-enter the Diagnostics Mode. With “TEST ON” displayed, open the oven door and fully engage the door switch. If the display does not change from “UI” to “UO,” go to Step 4. If the display does change, go to Step 3.

3. Inspect door and frame for warping or misalignment keeping the door from fully engaging the door switch. Make any necessary repairs then go to Step 7.

4. Unplug range or disconnect power.

5. Verify the actuating rod connection from the front frame to the door switch.

6. If there is damage to wires or connectors, replace the harness. If there is no damage to wires or connectors, replace the door switch.

7. Replace all parts and panels before operating.

8. Plug in range or reconnect power.

9. Press CANCEL/OFF key. Select and start the SELF-CLEAN or PRECISE CLEAN function. Observe for at least 1 minute to ensure that operation is normal.

10. Go to the Diagnostics Mode and scroll to the Faults display to clear faults.

3

FOR SERVICE TECHNICIAN’S USE ONLY

Display Codes Likely Failure Condition Suggested Corrective Action Procedure

F5 E1 Door latch not operating 1. Press CANCEL>CANCEL>START to enter the Diagnostics Mode and verify the error (Clean mode – on some models) code.

2. Press the CANCEL/OFF key. Press CANCEL>CANCEL>START to re-enter the Diagnostics Mode. With “TEST ON” displayed, press the SELF CLEAN or PRECISE CLEAN key to run the lock motor.

a. If the lock icon remains lit after 8-10 seconds, verify that the door is locked. If the door is not locked, press the SELF CLEAN or PRECISE CLEAN key a second time. When the lock icon turns off, go to Step 3.

b. If the lock icon is flashing, pull on the oven door handle every 4-5 seconds to check if the door is locked. The flashing will stop after 45 seconds with the door unlocked.

3. Unplug range or disconnect power.

4. Verify the wires and connectors between the latch assembly and control are seated properly. If the lock icon stayed lit in Step 2a, go to Step 7. If the door is latched in Step 2b, go to Step 5.

5. If the door is latched in Step 2b, check for continuity across the door latch switch with the switch depressed. If the switch measures open, replace the latch motor assembly. Go to Step 7.

6. If the door did not lock in Step 2b, check for continuity from P5-3 to P6-3. If the circuit is open or if the resistance of the latch motor is not between 500Ω and 3,000Ω, replace the motor latch assembly.

7. Verify the actuating rod connection between the latch and latch motor.

8. Replace all parts and panels before operating.

9. Plug in range or reconnect power.

10. Press CANCEL/OFF key. Select and start the SELF-CLEAN or PRECISE CLEAN function. Observe for at least 1 minute to ensure that operation is normal.

11. Press CANCEL>CANCEL>START to enter the Diagnostics Mode and scroll to the Faults display to clear faults.

F6 E1 Over temp cook 1. Press CANCEL>CANCEL>START to enter the Diagnostics Mode and verify the error Over temp clean code. E2 Over temp (warming drawer) 2. Unplug range or disconnect power. E3 3. Replace control. 4. Replace all parts and panels before operating. 5. Plug in range or reconnect power. 6. Verify operation is normal.

Component Check

Check between each solenoid for 216Ω resistance. (Measure between the two Broil valve terminals marked B and between the two Bake valve terminals marked C.) NOTE: Always check both solenoids. If one of the solenoids is defective, neither one will work.

View from left View from front

B

C

A

A. Gas shutoff valve in closed position B. Broil valve terminals C. Bake valve terminals

4

FOR SERVICE TECHNICIAN’S USE ONLY

Wiring Diagram

NOTE: Schematic shows door latch switch in the COOK position with oven door open and elements off.

Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

L1 Oven Control MRC N BK WW P6-1 Power Supply P6-3 W BK W BK P4-1 Warming Drawer (K5) P4-2 Warming Drawer BK BK P10-3 OR/W Warming Drawer Temp Sensor BK P10-4 GY BK GY

BK P7-5 Y Door Position Switch P7-6 BU Y Door Latch Switch

BU

P7-4 GY Oven Temp Sensor P10-1 V P10-2 V

P2-1 Convect (K4) P2-3 Convection Element R/W

Y 914 W

Oven Light (K6) P5-4 Oven Light Assy 40W BK/W W

P5-6 Latch Motor (K7) P5-3 Latch Motor 4W W

BR

Convection Fan (K8) P5-2 Convection Fan W P1-3 Bake (K2) P1-4 OR

P2-4 Broil (K3) P1-1 R/W DSI Board

BU/W Bake J1-1 J1-4 W Valve R

OR

Surface Burner J1-2 Ignition Switch Broil OR OR

Valve J1-3

BU

BK R R R/W J1-6 Broil W BK BU/W J1-7 Bake BR Gnd G W J1-10 Gnd

Surface Burner

Spark Module

LN Gnd

R Y OR BU BK

Gnd

LEGEND

Component Connection No On Some In Line P1-2 = Connector 1 Multiple P1 Position 2 Functions / Circuitry

Enclosed Within

Terminals Connection Models Connection

5

FOR SERVICE TECHNICIAN’S USE ONLY

Component Testing Chart – Gas Model with MRC Control

NOTE: Do not continue with the diagnosis of the appliance if a fuse is blown, a circuit breaker is tripped, or if there is less than a 120 +10%/-15% volt power supply at the wall outlet.

To measure for proper voltage, complete the following steps:

1. Unplug range or disconnect power. 3. Plug in range or reconnect power and confirm voltage reading.

2. Connect voltage measurement equipment. 4. Unplug range or disconnect power after performing voltage measurements.

From To Results Notes Nominal voltage

Door switch P7-4 P7-5 Door open = open circuit 5 VDC infinite resistance

Door closed = closed circuit 0 resistance

Latch Motor P5-3 W (Neutral) 500 – 3000Ω Latch motor locks door at start of Clean 120 VAC P6-3 cycle

Oven P10-1 P10-2 1000 – 1200Ω at room Disconnect connector P3 from control N/A temperature temperature sensor before measuring oven temperature

sensor

Warming drawer P10-3 P10-4 1000 – 1200Ω at room Disconnect connector P3 from control N/A temperature temperature sensor before measuring oven temperature

sensor

Oven light P5-4 W (Neutral) 0 – 40Ω nominal Measure resistance with oven light 120 VAC P6-3 switch off and door closed.

Measure voltage with oven light switch on or door open.

Warming drawer P4-2 W (Neutral) 15 – 20Ω nominal Measure voltage with Warm Drawer on. 120 VAC element P6-3

Convection fan P5-2 W (Neutral) 15-20Ω nominal (electric) Convection fan runs only in Convection 120 VAC motor P6-3 30-35Ω nominal (gas) Bake mode

Convection P2-3 W (Neutral) 16Ω nominal Convection element will cycle on and off 120 VAC element P6-3 in Convection Bake mode

Latch Switch P7-4 P7-6 Door open = open circuit 5 VDC infinite resistance

Door closed = closed circuit 0 resistance

JI-4 JI-6 N/A Must be in Bake mode. Verify burner 120 VAC operation.

JI-4 JI-7 N/A Must be in Broil mode. Verify burner 120 VAC operation. 120 VAC DSI board Verify voltage to DSI board JI-4 JI-10 N/A

JI-1 JI-2 216Ω nominal Must be in Bake mode. Verify burner 8-18 VDC operation.

JI-3 JI-2 216Ω nominal Must be in Broil mode. Verify burner 8-18 VDC operation.

Surface burner L N N/A Turn one cooktop knob to “LITE” 120 VAC position. Verify that the burner sparks. spark module

6

FOR SERVICE TECHNICIAN’S USE ONLY

Quick Connect Plugs

For controls

DSI

P1 (Blue) P5 (Blue) R

BU/W BK R/W OR BR BK/W BK OR

BU

P2 (Red) P4 (Green) P6 (Red) W

BK Y BK BK OR/W BK W G R/W

BU/W

P7 (Black) P10 (Yellow)

GY Y BU V V GY GY BK

All MRC Controls (Gas Models)

P5 P6

P3 P2 P1 P4 P12 P7 P10

Rear View

Conn Pin Function Conn Pin Function Broil Control L1 input P1 (Blue) 1 Bake L1 input P6 (Red) 1 Control neutral Bake Control ground 3 Convection element – L1 input 3 Latch/door switch common Convection element Door position switch 4 L1 input – broil 5 Door latch switch Warming drawer – L1 input Oven temp sensor P2 (Red) 1 Warming drawer P7 (Black) 4 Oven temp sensor Convection fan Warm drawer temp sensor 3 Latch motor 5 Warm drawer temp sensor Oven light 4 L1 input 6

P4 (Green) 1 P10 (Yellow) 1

2 2

P5 (Blue) 2 3

3 4

4

6

7

FOR SERVICE TECHNICIAN’S USE ONLY

Software copyrighted. This product is covered by one or more of the following patents U.S. Patent Nos.

4,852,544 5,321,229 5,491,314 5,808,278 5,924,857 6,035,848 6,201,222 6,394,081 6,663,009 6,734,403 4,974,804 5,349,162 5,571,433 5,810,576 5,928,543 6,043,461 6,232,584 6,403,929 6,666,676 6,784,404 5,008,516 5,378,874 5,571,434 5,813,320 5,961,311 6,079,756 6,263,782 6,437,294 6,693,262 6,841,761 5,064,998 5,382,552 5,620,623 5,841,112 5,967,634 6,087,944 6,349,717 6,509,551 6,698,417 6,870,138 5,138,137 5,422,460 5,694,916 5,856,654 5,983,888 6,097,000 6,363,971 6,545,251 6,698,923 6,904,969 5,142,125 5,424,512 5,749,388 5,881,710 6,008,478 6,111,231 6,375,150 6,570,136 6,700,101 6,930,287 5,175,413 5,438,180 5,756,970 5,910,265 6,017,211 6,163,017 6,392,204 6,614,006 6,722,356 6,935,330 5,185,047 5,441,036 5,767,488 5,918,589

Other Patents Pending.

W10538797A W10538797A NOTE: This sheet contains important Technical Service Data. © 2012. All rights reserved. FOR SERVICE TECHNICIAN ONLY DO NOT REMOVE OR DESTROY

9/12

FOR SERVICE TECHNICIAN’S USE ONLY