Service Information; Testing Procedures; Erc Warnings And Failure Codes - Amana ARGS7650 Service Manual

Testing Procedures

Service Information

The ERC consist's of a display, relays and all circuitry
housed in a Lexan enclosure.
The ERC has eight function pads oven cancel, timer on/
off, clock, stop time, cook time, clean, broil, bake, and
two slew pads to select time and temperature.
The oven temperature sensor is mounted in the oven
cavity and is connected to the J2-1 and J2-2 connectors
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 bake/broil relays to
maintain the desired temperature setting.
The ERC is also capable of sensing certain failure
conditions which can occur in the temperature sensor,
the self-clean latch switch or the ERC itself. If the ERC
senses a failure, power will be removed from the bake/
broil relays, an alarm will sound, and a failure code will
be displayed.
Each major component of the Electronic Range Control
System (ERC control board, and temperature sensor) is
serviced as a separate part. However, each component
and related wire harness must be tested prior to
replacing an individual component.
Control will automatically cancel any cooking operation
and remove all relay drives twelve hours after mode was
initiated if user forgets to cancel it or no input is made.
This model is not equipped with child lock out
programming.
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Testing Procedures
'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 the oven.
1. Apply power to oven press and hold COOK TIME
pad for 5 seconds within the first 5 minutes of power
up. (This must be the first pad/button pressed).
2. Test mode functions are accessed by pressing and
holding down individual pads to activate. Activation
of the pad will stop when the pad is released.
Pad Response
BAKE Energizes bake relay
BROIL/ Energizes broil relay
INSTA-BROIL
CLEAN 3 represents lock and unlock
2 represents lock contacts closed,
1 represents lock contacts open,
0 represents both contacts open -
STOP TIME Beeper on and micro ID number
TIMER Last time of day displayed
CLOCK All display segments lite
COOK TIME Displays checksum and sensor
temperature
SLEW PADS Sequences through display
segment
CANCEL Exits quick test mode
If relays do not "click" when Bake or Broil pads are
pressed, replace the ERC.
If other function's do not perform as specified, replace the
ERC.

ERC Warnings and Failure Codes

The Electronic Range Control is capable of detecting
certain failures within the ERC, the oven temperature
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contacts closed - invalid
unlock contacts open
unlock contacts closed
invalid
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