Whirlpool WED9500E SERIES Service Manual page 19

Service Fault/Error Codes
Continued from page 2-8
Code Description
Heater 2 Failure or
F4E2 Connector Problem (on
electric models only)
F4E3 Restricted Airflow
L2 Line Voltage Error
F4E4 (on electric models
only)
F4E5 High Limit
Communications Error
F6E2
UI Cannot Hear ACU
Communication Error
F6E3
ACU Cannot Hear UI
For Service Technician Use Only
Explanation and Recommended Procedure
Indicates no voltage detected at the heater relay.
• Unplug dryer or disconnect power and check that the wires are plugged into the
heater element(s) and the relay(s) on the ACU.
Indicates low airflow that may affect dryer performance.
• Confirm that airflow system is not blocked; check lint screen, exhaust duct, and
exhaust fan.
Indicates low L2 voltage (less than 50 V) is detected at the CCU.
• Check to see if a household fuse has blown or a circuit breaker has tripped.
• Confirm the power cord is properly installed and plugged into the power outlet.
• Unplug dryer or disconnect power and check the relay connections on the ACU.
• Gas Models Only: Unplug dryer or disconnect power and check the J14 connection
on the ACU (harness loopback on pins 4 & 5).
Indicates that the temperature threshold of the dryer has been exceeded. This
excessive temperature is usually an indicator of poor airflow and is most likely caused
by an exhaust restriction or failure of a component that drives airflow such as the
blower wheel.
Communication between the ACU and UI has not been detected.
• Unplug dryer or disconnect power.
• Check the harness continuity and connections between the ACU and UI.
• Check AC and DC supplies. See TEST #1: ACU Power Check, page 3-6.
• Replace the User Interface.
• Replace the ACU.
DIAGNOSTICS & TROUBLESHOOTING
Whirlpool & Maytag 9.2 Cu. Ft. Steam Dryer 2-9
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