KitchenAid KEBS278SSS Technical Guide - Page 77
Diagnostics & Troubleshooting - problems
UPC - 883049034867
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DIAGNOSTICS & TROUBLESHOOTING WARNING Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. IMPORTANT Electrostatic Discharge (ESD) Sensitive Electronics ESD problems are present everywhere. ESD may damage or weaken the electronic control assembly. The new control assembly may appear to work well after repair is finished, but failure may occur at a later date due to ESD stress. • Use an anti-static wrist strap. Connect wrist strap to green ground connection point or unpainted metal in the appliance. -OR- Touch your finger repeatedly to a green ground connection point or unpainted metal in the appliance. • Before removing the part from its package, touch the anti-static bag to a green ground connection point or unpainted metal in the appliance. • Avoid touching electronic parts or terminal contacts; handle electronic control assembly by edges only. • When repackaging failed electronic control assembly in anti-static bag, observe above instructions. DIAGNOSTICS • Is oven in "Sabbath Mode"? If so "SAB" will appear in the digital display. Press OPTIONS and "7" to end Sabbath mode. This will return to BAKE mode for an untimed bake. Disconnect power and perform the following checks: • 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 ohms per volt DC 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 harness must be entirely replaced. Do not re-work a harness. • Voltage checks must be made with all connectors attached to the boards. • Resistance checks must be made with power cord unplugged from outlet, and with wiring harness or connectors disconnected. 6-1