mypros+
Error code reference

Continental Washer Error Code A-00

Communication failure between microprocessor and inverter, inverter displays Er8.

Continental codesContinental washer codes

Communication failure between microprocessor and inverter, inverter displays Er8.

First step from the service manual

Remove the communication cable at micro position X-14 and set meter for DC voltage to verify the micro is producing the 5 VDC required to communicate.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for A-00.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What A-00 means on a Continental washer

The A-00 error code on a Continental washer indicates a communication failure between the main microprocessor control board and the inverter drive unit. When this fault is active, the inverter will independently display its own error code, Er8, confirming that the inverter has lost contact with the microprocessor. The inverter is responsible for controlling motor speed and direction, and it relies on a continuous data signal from the microprocessor to operate correctly. Without that signal, the inverter cannot function and the wash cycle will not proceed.

The communication link between these two components runs through a dedicated cable connected at position X-14 on the microprocessor board. The microprocessor must produce 5 VDC on this communication line to establish and maintain the data exchange with the inverter. If that voltage is absent, low, or intermittent, the inverter interprets the condition as a loss of communication and triggers the Er8 fault, which in turn causes the A-00 code to appear on the main display.

Common causes include a damaged or disconnected communication cable, a failed connector at the X-14 position, a microprocessor board that is no longer generating the required 5 VDC output, or a failed inverter that cannot receive or process the signal even when the voltage is present. Diagnosing this fault correctly requires isolating each component systematically, starting with voltage verification at the microprocessor before moving on to cable integrity and inverter function.

Source: manufacturer service documentation.

Common causes of A-00

  1. 01

    Disconnected or damaged communication cable

    Wiring / connection

    The cable connecting the microprocessor at position X-14 to the inverter may have come loose, been pinched, or suffered wire damage. Visually inspect the cable and connectors at both ends for corrosion, breaks, or loose seating.

  2. 02

    Microprocessor not producing 5 VDC

    Part replacement

    The microprocessor board must output 5 VDC on the communication line at X-14 for the inverter to receive data. If a DC voltage meter reading at that connector shows no voltage or a significantly reduced voltage, the microprocessor board is likely faulty and will need replacement.

  3. 03

    Failed inverter board

    Part replacement

    If the microprocessor is confirmed to be producing the correct 5 VDC signal and the cable is intact, the inverter itself may have failed internally and can no longer receive or process the communication signal. The inverter displaying Er8 independently supports this as a possibility.

  4. 04

    Corroded or damaged connector at X-14

    Wiring / connection

    Even if the cable wires are intact, a corroded or bent pin at the X-14 connector on the microprocessor board can interrupt the signal. Inspect the connector closely for oxidation, deformation, or debris that could cause a poor connection.

  5. 05

    Intermittent wiring fault due to vibration

    Wiring / connection

    Washer vibration during spin cycles can loosen connectors or cause hairline wire fractures that produce an intermittent communication loss. The fault may not be present when the machine is stationary, so check all connection points along the communication cable path carefully.

See the test procedure for each cause

Frequently asked questions about A-00

What does A-00 mean on a Continental washer?
The A-00 code means the main microprocessor control board and the inverter drive unit have lost communication with each other. When this happens, the inverter will also show its own code, Er8. The microprocessor is required to supply 5 VDC through a communication cable at connector X-14 for the two components to exchange data. If that signal is missing or interrupted, the washer will stop operating and display A-00.
Can I fix a Continental washer A-00 error myself?
A knowledgeable DIYer can perform some of the initial diagnostics, such as inspecting the communication cable and checking the connector at the X-14 position for visible damage or looseness. However, verifying the 5 VDC output from the microprocessor requires a DC voltage meter and comfort working around live control boards. If the microprocessor or inverter board needs to be replaced, most homeowners will want a qualified technician to handle that work.
Is it safe to keep using my washer when the A-00 error is showing?
No, the washer will not operate normally with an active A-00 fault because the inverter cannot control the motor without communication from the microprocessor. Attempting to force cycles while this fault is present is not recommended, as the underlying electrical fault could potentially worsen. The machine should remain out of service until the communication issue is diagnosed and repaired.
How much does it cost to repair a Continental washer A-00 error?
Repair costs depend on which component has failed. If the issue is simply a loose or damaged cable, the cost may be limited to a service call fee, which typically ranges from $75 to $150. Replacing a microprocessor control board generally costs between $150 and $400 including parts and labor, while inverter board replacement can range from $200 to $500 or more depending on parts availability and labor rates in your area.
Will resetting the washer clear the A-00 error code?
A power reset may temporarily clear the displayed code, but the A-00 error will return as soon as the washer attempts to operate if the underlying communication fault has not been corrected. Because this code reflects an actual hardware or wiring problem between the microprocessor and the inverter, a reset alone is not a fix. The root cause must be identified and addressed for the fault to be permanently resolved.

Related Continental washer codes

All Continental washer codes
View all 20 Continental washer codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass