Maytag MER6875ACB/F/N/S/W, MER6775AAB/F/N/Q/S/W, MER6555AAB/Q/W manual Maytag Services 16023416

Troubleshooting Procedures

!WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to oven before servicing, unless testing requires power.

Diagnostic Code Checking

Code

Description

When Checked

Detection

1c1c	Shorted key	Always	1 minute
1c2c	Keyboard tail disconnected	Always	1 minute
1c31	Cancel key circuit problem	Always	20 seconds
1c32	Cancel key circuit problem	Always	20 seconds
1c6c	EEPROM error	When accessing EEPROM	3 tries
1c7c	Control not calibrated	Always	3 tries
1c8c	Cooking program error	Cook or clean programmed	3 tries
1d11	Runaway temp (650°F), door unlocked	Latch unlocked	1 minute
1d12	Runaway temp (650°F), door unlocked	Latch unlocked	1 minute
1d21	Runaway temp (950°F), door locked	Latch locked	1 minute
1d22	Runaway temp (950°F), door locked	Latch locked	1 minute
3d11	Sensor open	Cook or clean active	20 seconds
3d12	Sensor open	Cook or clean active	20 seconds
3d21	Sensor shorted	Cook or clean active	20 seconds
3d22	Sensor shorted	Cook or clean active	20 seconds
4d11	Door switch position failure	Clean or keyboard Lockout active	1 minute
4d12	Door switch position failure	Clean or keyboard Lockout active	1 minute
4d21	No reverse airflow fan rotation (no/low RPM)	Clean or Cook programmed	1 minute
4d31	Reverse airflow fan state (on when should be off)	Suppose to be OFF	1 minute
4d51	Door switch circuit failure	Convect, Clean or Keyboard Lockout programmed	1 minute
4d52	Door switch circuit failure	Convect, Clean or Keyboard Lockout programmed	1 minute
9d11	Latch will not lock	Latch should be locked	See Note 6
9d12	Latch will not lock	Latch should be locked	See Note 6
9d21	Latch will not unlock	Latch should be unlocked	See Note 6
9d22	Latch will not unlock	Latch should be unlocked	See Note 6
9d31	Latch state unknown, both locked and unlocked	Latch should be locked or when lock attempted	See Note 6
9d32	Latch state unknown, both locked and unlocked	Latch should be locked or when lock attempted	See Note 6

Diagnostic Code Handling

Code	Measurable	What is Displayed	Action Taken By Control
			Disables audible for affected key depression
1c1c	Keypress	Nothing	Disables all outputs 1, 2
			Disables lights and timers
			Disables audible for key depression
1c2c	Keyboard loop improper value	Nothing	Disables all outputs 1
			Disables lights and timers
1c31	Cancel key improper value	BAKE flashes 3	Disables all outputs for cavity 1
1c32	Cancel key improper value	BAKE flashes 3	Disables all outputs for cavity 1
1c6c	No response from EEPROM	Nothing	Disables all outputs 1
1c7c	Calibration value out of range	“CAL” in the time digits	Completely disables oven 4
1c8c	CRC invalid	Nothing	Cancels active cook function
1d11	Sensor resistance > 2237 Ω	BAKE flashes 3	Disables all cook function for cavity
1d12	Sensor resistance > 2237 Ω	BAKE flashes 3	Disables all cook function for cavity
1d21	Sensor resistance > 2787 Ω	BAKE flashes 3	Disables all cook function for cavity
1d22	Sensor resistance > 2787 Ω	BAKE flashes 3	Disables all cook function for cavity
3d11	Sensor resistance > Infinite Ω	BAKE flashes 3	Disables all cook function for cavity
3d12	Sensor resistance > Infinite Ω	BAKE flashes 3	Disables all cook function for cavity
3d21	Sensor resistance > 0 Ω	BAKE flashes 3	Disables all cook function for cavity
3d22	Sensor resistance > 0 Ω	BAKE flashes 3	Disables all cook function for cavity
4d11	Door switch not closed when door is locked	Nothing	Disables Clean and Lockout functions 5
4d12	Door switch not closed when door is locked	Nothing	Disables Clean and Lockout functions 5
4d21	No reverse airflow fan rotation (no/low RPM)	Nothing	Disables all cook function for cavity
4d31	Reverse airflow fan state (on when should be off)	Nothing	No action
4d51	Door switch not open or closed	Nothing	Disables Convect, Clean, and Lockout functions 4, 5
			Turn off light and disable light from door switch
4d52	Door switch not open or closed	Nothing	Disables Convect, Clean, and Lockout functions 4, 5
			Turn off light and disable light from door switch
9d11	Lock switch not closed	LOCK flashes 3	Disables Clean and Lockout functions 4
9d12	Lock switch not closed	LOCK flashes 3	Disables Clean and Lockout functions 4
9d21	Unlock switch not closed	LOCK flashes 3	Disables Clean and Lockout functions 4
9d22	Unlock switch not closed	LOCK flashes 3	Disables Clean and Lockout functions 4
9d31	Latch both locked and unlocked	LOCK flashes 3	Disables Clean and Lockout functions 4
9d32	Latch both locked and unlocked	LOCK flashes 3	Disables Clean and Lockout functions 4

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