Speed Queen Washer Error Code Eio 46: Cold Fill Tub Valve Shorted
Eio 46 means the input/output board found a short on the output for the cold fill tub valve. A pulsing alarm sounds for two minutes, and the manual clears it by disconnecting and reconnecting power. A repeat means service is needed.
Medium: a shorted valve output needs a technician, though the manual describes only an alarm and a power reset.
- Code
- Eio 46
- Maker
- Speed Queen
- Equipment
- Washers
- Applies to
- Alliance/Speed Queen CHM1792C_SVG washer-extractor (model numbers on p. 8)
What does Speed Queen error code Eio 46 mean?
Each water valve on a Speed Queen washer-extractor is switched by a numbered output on the input/output board. The board keeps an eye on those outputs, and when one looks shorted it raises a code. Eio 46 belongs to the cold fill tub valve, and the display reads “Cold Fill Tub Valve Shorted”.
According to the manual, the control sounds a pulsing alarm tone for two minutes, and the error is cleared by disconnecting and then reconnecting power to the machine. The manual does not list causes and does not describe how the cycle proceeds. This code is the cold-water counterpart of Eio 45. The two valves are separate outputs, so a short on one does not automatically mean the other is affected. If only Eio 46 appears, the attention goes to the cold fill valve circuit rather than to the whole board.
Affected models and control systems
Alliance/Speed Queen washer-extractors covered by programming manual CHM1792C_SVG; the model numbers are listed on page 8 of that manual.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- Two minutes of pulsing alarm tone
- Eio 46 shown on the display
- Cold water does not fill the tub as usual
Possible causes
Likely causes — what usually sits behind error code Eio 46 on this control. A technician confirms which one it is before any part is replaced.
- Cold fill valve coil shorted internally
- Wiring to the cold fill valve damaged by heat or rubbing
- Output driver on the input/output board failed shorted
Safe checks before calling for service
- Write down Eio 46 and what the washer was doing when the alarm began.
- Disconnect power, wait a few seconds and reconnect it, following the manual.
- Start a fill and see whether Eio 46 comes back.
- Report whether hot fill still works when the cold fill code appears.
How a technician diagnoses error code Eio 46
- Verify the code returns after a power cycle.
- Measure the cold fill valve coil with the power off.
- Look along the harness for damaged insulation and moisture at the valve connector.
- Check the board output and its connector for heat damage.
- Replace the failed valve, wire or board once the readings identify it.
- Valve wiring is mains-voltage or low-voltage control wiring inside panels that only trained people should open.
- Resistance readings need the right meter and the specification for the valve.
- Restarting a shorted circuit repeatedly risks harming the board.
How error code Eio 46 differs from similar codes
Eio 46 is the cold counterpart of Eio 45, the hot fill tub valve short.
Technical reference
- Document
- Washer-Extractor Programming CHM1792C_SVG (Original Instructions)
- Edition
- Part No. F8641001ENR4, January 2020
- Models / control
- Alliance/Speed Queen CHM1792C_SVG washer-extractor (model numbers on p. 8)
- Section
- Error Codes, Table 29, pp. 100-108 (PDF pages equal printed pages)
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related Speed Queen washer error codes
Why does it say cold fill and not hot?
Each valve has its own output, and Eio 46 is the one for the cold fill tub valve.
Is the alarm dangerous?
The manual describes it as a pulsing tone for two minutes. It does not call it a hazard.
What if the code does not come back?
Tell the owner anyway. A short that appears once can return later.
Need help with Speed Queen error code Eio 46?
A technician confirms the cause on site and gives you the price in writing before any work starts.