Maytag Washer Error Code E100

E100 on a Maytag washer indicates a communication fault between the main washer control board and the signal conditioner of the built-in weighing system. This code only appears on washer models equipped with a load weighing system. The fault means the two components have lost their communication link, which is often related to a missing 24 Vdc power supply to the signal conditioner, wiring issues, or a failed module.

It is not recommended to continue using the washer while E100 is active. The weighing system is part of how the washer manages water levels and cycle performance, and operating without it functioning correctly could result in improper wash cycles. Address the fault before running additional loads to avoid potential secondary issues.

A power reset may temporarily clear the E100 code if the fault was caused by a momentary communication interruption, but if an underlying hardware problem exists, the code will return once the washer attempts to communicate with the weighing system again. A reset is a reasonable first step, but persistent E100 errors require hands-on diagnosis of the power supply, wiring, and components involved.

Some of the diagnostic steps for E100 are within reach of a confident DIYer, such as inspecting wiring harnesses, reseating connectors, and using a multimeter to check for 24 Vdc at the signal conditioner. However, if the fault is traced to a failed signal conditioner module or main control board, those components will need to be replaced, which typically requires more technical experience and sourcing the correct parts.

Repair costs vary depending on the root cause. If the fix involves only reseating a connector or repairing a wiring harness, costs may be minimal, primarily covering labor if a technician is used. If a signal conditioner module needs replacement, parts and labor combined could range from around $150 to $400 or more. A failed main control board is typically the most expensive repair, potentially ranging from $200 to $500 or higher depending on the model.