DIAGNOSTICS AND TROUBLESHOOTING
DIAGNOSTICS
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.
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 or DVM having a sensitivity of 20,000 ohms per volt DC or greater.
•Check all connections before replacing com- ponents. Look for broken or loose wires, failed terminals, or wires not pressed into connectors far enough.
•The most common cause for control failure is corrosion on connectors. Therefore, discon- necting and reconnecting wires will be nec- essary 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 en- gage metal barbs.
•Resistance checks must be made with power cord unplugged from outlet.
IMPORTANT
Electrostatic Discharge (ESD)
Sensitive Electronics
ESD problems are present everywhere. ESD may damage or weaken the electronic con- trol board. 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
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
•Avoid touching electronic parts or terminal contacts; handle electronic control board by edges only.
•When repackaging failed electronic con- trol board in