Amana RST AUTOMATIC ELECTRIC RSS380, Buzzer Alarm, Display, Operation And Service Procedures

OPERATION AND SERVICE PROCEDURES

AUTOMATIC ELECTRIC RSS380

button (bake or clean) and rotating the time set control to	1.	Simulate initial power connector or power interruption
move the digits back to "0:00". The display will then show		by pressing the three (3) left hand buttons simulta-
time of day. If in self-clean the program also can be		neously. Each element of the display should momen-
stopped by pressing the self-clean button a second time.		tarily light in sequence followed by a momentary four
The display will return to time of day.		(4) zeros and then four (4) eights and two (2) arrows
		flashing. Ohmmeter checks across switch contacts
BUZZER ALARM		11 to 12 and 13 to 14 should indicate open switches
		(infinite or very high ohms). Ohmmeter should be on
The buzzer alarm sounds at the end of the minute-minder		RX1 range.
countdown. It also sounds at the completion of the timed
bake or roasting cycle but not sound at the end of the self-	2.	Reset time-of-day on display (press in two (2) left
clean program. The buzzer will sound for one (1) to two (2)		buttons and turn "Time Set" knob). Push in minute
minutes then shut off. It can be silenced manually by		timer button (far left) and program five (5) to ten (10)
pressing any of the three (3) buttons on the left. Pressing		seconds in display. Timer switches should indicate
the "Clean" button will also silence the alarm but then the		open condition on ohmmeter. Alarm buzzer should
three (3) hour clean setting in the displayed would need to		sound at the end of the countdown. Push minute
be cleared manually.		minder button to stop buzzer.

DISPLAY

When the range is initially connected to the power source or after a power interruption, each element of the display will light momentarily in sequence then momentarily dis- play four (4) zeros. Following this the display will flash four

(4)eights along with the two (2) left most arrows to indicate the buttons to be pressed to set the time of day.

Initial power connection or power interruption can be simulated by pressing in all three (3) left most buttons simultaneously.

TO AVOID THE RISK OF ELECTRICAL SHOCK, PERSONAL INJURY OR DEATH DISCONNECT POWER BEFORE SERVICING, UNLESS TESTING REQUIRES IT.

TIMER TESTING

The electronic digital timer can be tested operationally and electrically.

OPERATIONAL TEST

This test procedure requires power applied (120 VAC) either in the range or with 120 VAC line cord connected to terminals 1 and 2 for bench test. An ohmmeter or continu- ity tester should be alternately connected across switch terminals 11 to 12 and 13 to 14. Selector switch must be in "OFF" position and latch in open position (non self- clean). NOTE: With selector switch in "OFF" position and latch in open position, the timer switch terminals are disconnected from circuit power sources which could damage the ohmmeter.

RC231002 Rev. 3

3.Connect the ohmmeter set to RX1 range across either time switch 11 to 12 or 13 to 14. Press in the "Bake" button and hold. Meter should indicate open switch (infinite or very high ohms). While holding button in, set approximately ten (10) seconds on the display. Meter needle should swing to zero (0) ohms indicating switch closed. Repeat the procedure after transfer- ring the test leads to the other switch. Allow count- down to complete, buzzer should sound. Push button in to silence buzzer. Display should return to time of day.

4.With ohmmeter connected across one of the switches and set to RX1 range, push in the "Stop" button and program time of day plus ten (10) minutes. Meter should indicate switches are open. Push in "Bake Time" button - switches should still remain open. With "Bake Time" button held in, program five (5) minutes. Switches should still show open condition. Allow timer to countdown, oven should start (switches close) in five (5) minutes. After five (5) more minutes switches should open, display indicates time of day and buzzer sounds. Press bake button to silence buzzer.

5.Push self-clean button in. The following should take place immediately - three (3) hours (3:00) should appear in the display, the letter "C" should appear on the left side of the display, the oven-on symbol should also appear on the left and both switches should be closed. Manually, with "Time Set" control, turn the digital display down to one (1) minute. Allow the timer to countdown to 0:00 - display should return to time- of-day and the switches open.

NOTE: A slight "click" can be heard whenever the relay switches open or close.

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