Whirlpool WED99HEDW0 Technical Education page 75

Service Fault/Error Codes
Continued from page 5-7
Code Description
F4E4 L2 Line Voltage Error
Communications Error
F6E1 UI to CCU
F6E2 Communication Error
CCU to UI
F9E1 Drain System Error
LF Lint Filter Removed
For Service Technician Use Only
Explanation and Recommended Procedure
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 CCU.
Communication between the CCU and UI has not been detected.
• Unplug dryer or disconnect power.
• Check the harness continuity and connections between the CCU and UI.
• Check AC and DC supplies. See TEST #1: CCU Power Check, page 6-4.
• Replace the User Interface.
• Replace the CCU.
Indicates that the float switch is in full position and the CCU has been in run mode for
60 seconds.
Indicates that the lint filter has been removed from running position.
• Place the filter back into running position, and verify that it is properly seated.
DIAGNOSTICS & TROUBLESHOOTING
HybridCare™ Dryer with Heat Pump Technology
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