Diagnostic Guide - KitchenAid Pro Line KHEV01RSS Technical Education

DIAGNOSTIC GUIDE

Before servicing, check the following:
• Make sure there is power at the wall outlet.
• Has a household fuse blown or circuit
breaker tripped? Time delay fuse?
• Is dryer vent properly installed and clear of
lint or obstructions?
• All tests/checks should be made with a
VOM (volt-ohm-milliammeter) or DVM
(digital-voltmeter) having a sensitivity of
20,000 ohms per volt DC or greater.
• Check all connections before replacing
components. Look for broken or loose
wires, failed terminals, or wires not pressed
into connectors far enough.
• A potential cause of a control not function-
ing is corrosion on connections. Observe
connections and check for continuity with
an ohmmeter.
• Connectors: Look at top of connector.
Check for broken or loose wires. Check
for wires not pressed into connector far
enough to engage metal barbs.
• Resistance checks must be made with dry-
er unplugged or power disconnected.
Electrostatic Discharge (ESD)
Sensitive Electronics
ESD problems are present everywhere.
ESD may damage or weaken the machine
control electronics. The new control assem-
bly 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.
Touch your finger repeatedly to a green
ground connection point or unpainted
metal in the appliance.
• Before removing the part from its pack-
age, touch the anti-static bag to a green
ground connection point or unpainted
metal in the appliance.
• Avoid touching electronic parts or ter-
minal contacts; handle machine control
electronics by edges only.
• When repackaging failed machine con-
trol electronics in anti-static bag, observe
above instructions.
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IMPORTANT
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