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©2003 Maytag Appliances Company 16021875 Rev. 0 B—7
Service Information
The ERC operates in conjunction with a separate relay/
power supply circuit board, and oven temperature
sensor(s) to control all bake, broil, convection, and self
clean functions.
The ERC is connected through to a function panel to
control minute timer, clock, stop time, oven light, panel
light, cancel, bake, cook time, broil, convection bake,
convection, convection broil, and clean. Slew pads are
used to set times and temperatures.
The mylar control panel provides direct input to the ERC
to control all functions.
The ERC display consists of two digital readouts which
displays all timing functions, and all temperature
functions.
The relay/power supply circuit board consists of relays
for convection fan, oven light, convection element, bake,
broil, door lock, and double line break operations
controlled by the ERC, and a step down transformer with
two secondary windings which convert 120 VAC input to
filament voltage to power the ERC display.
The oven temperature sensor is mounted in the oven
cavity and connected to the J4 connector on the rear of
the ERC. As the oven temperature increases, the sensor
resistance also increases. The ERC converts this
resistance change to a corresponding temperature
readout and to cycle the relay(s) to maintain the desired
temperature setting.
The ERC is also capable of sensing certain failure
conditions which can occur in the oven temperature
sensor(s), the self clean latch switch(es) the adaptor
board or the ERC itself. If the ERC senses a failure,
power will be removed from the relays, an alarm will
sound and a failure code will be displayed.
Each major component of the Electronic Range Control
system is serviced as a separate part. However, each
component and related wire harness must be tested prior
to replacing an individual component.
Quick Test Procedure
“Quick Test” Mode for Electronic Range Control
Follow procedure below to use the quick test mode.
Entries must be made within 32 seconds of each other or
the control will exit the quick test mode. The quick test
mode cannot be reactivated until power is disconnected
from oven, and must be accessed within 5 minutes of
powering up.
NOTE: To enter quick test mode, this must be the first
key pad entered after power is applied.
1. Apply power to oven press and hold COOK TIME
pad for 5 seconds.
2. Display will read the following:
Pad Response
CLEAN Double Line Break (DLB) on and
door lock status code displayed
BAKE DLB and Bake on
CONV. BAKE DLB, Bake and Conv Fan on
CONVECTION DLB, Conv. Element and Fan on
BROIL DLB and Broil on
CONV. BROIL DLB, Broil and Conv. Fan on
STOP TIME Beeper on
COOK TIME Displays manufacturer code and
sensor readings “000”=open sensor
TIMER Displays dashes
CLOCK All display segments illuminated
OVEN LIGHT Oven light on
CANCEL Exit Quicktest
SLEW Sequences through display
segments
Testing Procedures
WARNI NG
!
To avoid the risk of electric shock, personal injury or
death, disconnect power before servicing, unless testing
requires it.