Troubleshooting guide
TECH SHEET - DO NOT DISCARD PAGE 1
06/04 FOR SERVICE TECHNICIAN'S USE ONLY PART NO. 326038065
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.
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?
■
Are both hot and cold water faucets open
and water supply hoses unobstructed?
■
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. Look for broken or loose
wires, failed terminals, or wires not pressed
into connections far enough.
■
The most common cause for control failure
is corrosion on connectors. Therefore,
disconnecting and reconnecting wires will
be necessary throughout test procedures.
■
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
power cord unplugged from outlet, and with
wiring harness or connectors disconnected.
WARNING
Electric Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.