Tech Sheet

FOR SERVICE TECHNICIAN’S USE ONLY

Diagnostics

Unplug range or disconnect power before performing the following checks:

■ Make sure there is power at the wall outlet.

■ Has a household fuse blown or circuit breaker tripped? Was a regular

fuse used? Inform customer that a time-delay fuse is required.

■ A potential cause of a control not functioning is corrosion on connections.

Observe connections and check for continuity with an ohmmeter.

■ All tests/checks should be made with a VOM or DVM having a sensitivity

of 20,000 Ω per VDC or greater.

■ Check all connections before replacing components, looking for broken

or loose wires, failed terminals, or wires not pressed into connectors far

enough. Damaged harnesses must be entirely replaced. Do not rework a

harness.

■ Resistance checks must be made with power cord unplugged from

outlet, and with wiring harness or connectors disconnected.

■ If the oven does not heat, there may be a problem with connections to

the power supply. Check the connection to L2.

■ When removing AC power, allow time for the main control (ACU) to

completely power down. At a minimum, leave AC power removed for one

minute.

IMPORTANT: Do not replace the control if there is no evidence of any failure.

There are two service diagnostics modes implemented on the Main (right for

double oven models) user interface board including: Fault Code Display and

Manual Diagnostic modes.

To Enter Diagnostics Mode:

Before proceeding with any corrective action, perform the following steps to

enter the Diagnostics mode:

With the appliance in standby mode, perform a sequence of 6 movements

using the Mode Selector knob.

1. To start the movements, the knobs shall consider as initial position, Bake

for the Mode Selector knob and Off for the Temperature knob.

2. Turn the Mode Selector knob.

one position; pause for 2 seconds

NOTE: This sequence must be performed within 2 minutes.

3. Successful entry will be indicated by all UI LEDs ashing ON/OFF for a

half second and a tone will sound.

To Exit Diagnostics Mode:

NOTE: If there is no interaction for a 5-minutes period, Diagnostics Mode will

timeout.

Diagnostics Mode can be exited in one of the following ways:

■ Rotate Mode Selector knob to the BAKE position, Rotate the

Off/Temperature knob to OFF position, then press Start button after

1 second. A tone will sound for successful exit.

■ Remove the AC power from the appliance.

After exiting Diagnostics Mode, the appliance will return to Standby Mode.