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Error code reference

Amana Washer Error Code Sr

System Relay failure

Amana codesAmana washer codes

System Relay failure. Machine control does not see relay open when it should.

First step from the service manual

Replace machine control board.

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

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What Sr means on a Amana washer

The Sr error code on an Amana washer indicates a System Relay failure. Specifically, the machine control board is monitoring the state of an internal relay and detecting that the relay is not opening when the control expects it to open. Relays are electrically operated switches that the control board uses to send power to major components such as the motor, pump, and heating elements. When the board commands a relay to open (cut power) and the relay remains closed, the control flags this as a fault condition and displays the Sr code.

This type of failure is almost always rooted in the machine control board itself rather than in any external wiring or load component. The relay that is failing to open is typically soldered directly onto the control board's PCB. Over time, relay contacts can weld together due to electrical arcing, particularly if the washer has experienced power surges or if a downstream component drew excessive current. A welded relay contact will remain closed regardless of the control signal, causing the board to detect the mismatch between commanded state and actual state.

Because the relay is integrated into the control board assembly, the standard diagnostic path leads directly to replacing the machine control board. There are no separate relay components to test or swap independently on these machines. Before replacing the board, it is worth inspecting the wiring harness connections to the control board for any signs of burning, corrosion, or loose terminals, as a shorted harness could contribute to relay damage. However, if the harness and connectors appear intact, board replacement is the indicated corrective action.

Source: manufacturer service documentation.

Common causes of Sr

  1. 01

    Failed machine control board relay

    Part replacement

    The relay contacts on the control board PCB have welded together and will not open on command. This is the primary cause of the Sr code and requires replacing the entire machine control board.

  2. 02

    Power surge damage to control board

    Part replacement

    A voltage spike can damage relay components on the control board, causing them to fail in a closed position. Inspect the board for visible burn marks or discolored components near the relay circuits.

  3. 03

    Shorted wiring harness

    Wiring / connection

    A short circuit in the wiring harness connected to the control board can cause excessive current draw that damages relay contacts over time. Check all harness connectors to the control board for burning, melting, or corrosion before installing a new board.

  4. 04

    Overloaded downstream component

    Part replacement

    A failing motor, pump, or other load component drawing more current than rated can cause relay contacts to arc and weld. If a new control board triggers the same fault, inspect the components powered by that relay circuit.

See the test procedure for each cause

Frequently asked questions about Sr

What does Sr mean on a Amana washer?
The Sr code stands for System Relay failure. It means the machine control board commanded a relay to open and detected that the relay did not open as expected. This indicates a fault within the control board itself, specifically an internal relay that is stuck in the closed position.
Can I fix the Sr error code myself on an Amana washer?
The repair requires replacing the machine control board, which is a task many experienced DIYers can handle if they are comfortable working with appliance electronics and disconnecting wiring harnesses. Before ordering a board, inspect all harness connectors to the existing control board for signs of burning or corrosion. If the wiring looks clean, proceed with board replacement.
Will resetting the washer clear the Sr error code?
A reset may temporarily clear the code from the display, but because the root cause is a mechanically failed relay contact on the control board, the fault will return as soon as the washer runs through a cycle. A power cycle does not repair a welded relay contact, so the Sr code will come back until the control board is replaced.
Is it safe to use my Amana washer when the Sr code is showing?
It is not recommended to continue running the washer while the Sr code is active. A relay stuck in the closed position means the control board cannot properly cut power to the affected circuit, which could result in a component running longer than intended. Discontinue use until the control board has been replaced.
How much does it cost to fix the Sr error code on an Amana washer?
The cost depends on whether you hire a technician or do the repair yourself. A replacement machine control board typically runs in the range of $100 to $250 for the part alone, depending on the specific model. If you hire a professional, labor charges will add to that cost, bringing the total repair estimate to roughly $200 to $450 in most cases.

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