17
RE220002 Rev. 6
High voltages are present during the cook cycle.
Extreme caution should be observed at all times.
Before touching any oven components or wiring,
always unplug the oven from its power source and discharge the
capacitor by shorting across the capacitor terminals with an insulated handle screwdriver.
DANGER
!
Test Procedures
Drive and Holding Relay Test
Drive relay is on .000 and .A models only
1. Disconnect power to oven, and remove but do not
disconnect the control panel assembly. Lower the
back panel to the service position.
2. Perform test set-ups as indicated on the Test Chart
below.
NOTE: Test "Drive" or "Holding" relays one at a time.
Do not disconnect both relays at the same
time.
NOTE: If necessary, remove the component module
panel assembly to connect test leads. Replace
the module assembly prior to performing all
tests except the first two resistance checks.
TEST SET-UP
TEST POINTS
NORMAL READINGS
(Approximate)
CORRECTIVE ACTION
1.
2.
Disconnect power.
Remove harness leads from
relay terminals 1 & 6
1 to 6
250 to 350 ohm
Replace the relay and retest
1.
2.
Reconnect harness leads to
terminals 1 & 6.
Remove harness leads from
terminals 2 & 3, and insulate
to prevent electrical short.
2 to 3
Infinite ohms
Replace relay and retest
1.
2.
Reconnect power.
Program oven for 15 seconds
and put oven into a COOK
cycle.
1 to 6
22 Volts DC
Replace the controller and
retest
1. DRIVE RELAY
Program oven for 15 seconds
and put oven into a COOK
cycle.
2 to 3
Less than 1 ohm
during cook and for 60
seconds after cook
cycle, then infinite
ohms.
Replace the relay and retest.
1. HOLDING RELAY
Plug in oven
2 to 3
Less than 1 ohm for
60 seconds, then
inifinte ohms.
Replace the relay and retest
Drive/Holding Relay