GE JGBP86SEMSS Technical Service Manual page 20

ERC DIAGNOSTIC TESTS
TrueTemp
S
S
E O
E
T N
T
DELAY BAKE CLEAN START
BROIL LOCKED DOOR COOK
1
S
Bake
E
O
Circuit
T N
Test
DELAY BAKE CLEAN
BROIL LOCKED DOOR
2
S
Broil
E
O
Circuit
T N
Test
DELAY BAKE CLEAN
BROIL LOCKED DOOR
Disregard these 4 digits as they have
no relavance on the sensor test.
3
o
S
Sensor E O
T N
Test
DELAY BAKE CLEAN
BROIL LOCKED DOOR
Oven temperature
4
S
Numeric
E
O
Key Pad T N
Test
DELAY BAKE CLEAN
BROIL LOCKED DOOR
Example: Number 5 key pad depressed
CLOCK CLEAN
STOP TIMER
S
E
T
START CLOCK CLEAN
COOK STOP TIMER
S
E
T
START CLOCK CLEAN
COOK STOP TIMER
S
E
T
START CLOCK CLEAN
COOK STOP TIMER
S
E
T
START CLOCK CLEAN
COOK STOP TIMER
ERC ON BOARD DIAGNOSTIC TESTS
This test allows the Technician to energize the bake and bro il
relays (listen for A click), use the ovens onboard temperature
sensing and control system to measure oven temperature
(sensor, connector and ERC diagnosis) and lastly it allows you to
test keypanel input responses.
HOW TO ENTER AND EXIT THE DIAGNOSTIC MODE
To perform the ERC diagnostic tests, follow the steps below:
To initiate the ERC test mode, first remove power to the
1.
appliance for approx. 8 seconds and then reapply power.
Simultaneously press the COOKING TIME, DELAY START
2.
and number 8 pads. The word "tESt" will appear in the
ERC display. NOTE: If no keypad entry is made within 5
minutes, the ERC test mode will "time out".
3. To terminate the ERC test mode, press the CLEAR / OFF
key pad.
HOW TO PERFORM THE TESTS
The following tests allow you to quickly varify various ERC and
keypanel functions. Listed below are four common diagnostic
tests that can be made directly from the ERC.
1
ENERGIZE BAKE CIRCUIT - To perform this test, press BAKE
then START and listen for the bake relay to energize. CAUTI O N:
If you hold the start pad in, you are energizing the BAKE circuit.
As soon as you release the START pad the relay will deenergi z e.
If the relay does not energize, check the following: reconfirm that
you have entered the test mode correctly, check power and
wiring connections to the ERC, and lastly suspect a faulty ERC.
NOTE: when performing this test, the glowbar will be energized
as long as you hold in the start pad.
2
ENERGIZE BROIL RELAY - To perform this test, press BROIL
then START and listen for the broil relay to energize. CAUT ION: If
you hold the start pad in, you are energizing the BROIL circuit.
As soon as you release the START pad the relay will deenergi z e.
If the broil relay does not energize, check the following: reconfirm
that you have entered the test mode correctly, check power and
wiring connections to the ERC, and lastly suspect a faulty ERC.
NOTE: when performing this test, the glowbar will be energized
as long as you hold in the start pad.
3
SENSOR TEST - To perform this test, press and hold the
COOKING TIME pad or DELAY START pad (vaies by model).
The oven temperature will show in the display. NOTE: oven
temperatures below 100°F. will show as 100°F.
temperature showing in the display is not correct then suspect the
following: calibration, sensor, sensor connection, or ERC.
4
NUMERIC KEY PADS TEST - To perform proper numeric key
panel input responses, press any numbered key pad and hold it in
for approximately 5 seconds; the number you are pressing wil l
show in the ERC display. If it does not, reconfirm that you have
entered the test mode correctly, check wiring connections to the
ERC and keypanel, and lastly confirm shorted or open key pad by
performing the Key Panel test on page 10.
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If the