Speed Queen Washer Error Code Eio 62: 24 Volt Supply Over Voltage
Eio 62 means the input/output board sees its 24 volt supply running too high. The control sounds a pulsing alarm for two minutes, and the manual clears it by disconnecting and reconnecting power. If it returns, a technician needs to test the supply.
High: over voltage on the control supply can damage electronics, so the washer should stay off if the code repeats.
- Code
- Eio 62
- 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 62 mean?
The input/output board and many of the washer's outputs run on a 24 volt supply. The board watches that voltage, and if it rises above its allowed range, it raises Eio 62. The display shows “24 Volt Supply Over Voltage”.
The manual's description is brief: the control sounds a pulsing alarm tone for two minutes, and the error is cleared by disconnecting and then reconnecting power to the machine. It lists no causes and does not describe the effect on the cycle. Unlike the shorted-output codes, this one is about the supply itself and not about one valve or contactor. A supply that is too high can come from the part that makes the 24 volts, from a connection that has changed how it is loaded, or from the incoming power. Over-voltage is also the kind of condition that can damage electronics, so it is not a code to ignore.
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-minute pulsing alarm
- Eio 62 displayed
- The control may restart or behave erratically
Possible causes
Likely causes — what usually sits behind error code Eio 62 on this control. A technician confirms which one it is before any part is replaced.
- 24 volt supply regulating too high
- Incoming line voltage above the washer's rating
- Board that monitors the supply reading wrongly
Safe checks before calling for service
- Note the code and any storms, outages or construction nearby.
- Disconnect and reconnect power as the manual says.
- If the code returns, stop using the washer.
- Tell the technician whether other machines in the room show odd behavior.
How a technician diagnoses error code Eio 62
- Verify the repeat after a power cycle.
- Measure the incoming line voltage at the machine.
- Measure the 24 volt supply at the board and at the supply source.
- Check the supply's connections and the load on it.
- Replace the supply or the board according to the readings.
- Measuring supply voltages needs live testing inside the electrical area.
- Incoming voltage problems may involve the building's wiring and must be handled by a qualified electrician.
- High supply voltage can damage the board, so repeated restarts are risky.
How error code Eio 62 differs from similar codes
Eio 62 is the high side. Eio 63 is the matching under voltage code for the same 24 volt supply.
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
Is the building power to blame?
Possibly, but the manual does not say. A technician measures it.
Can I keep running loads?
Not with a repeat. High voltage can harm the electronics.
What is the difference from Eio 63?
Eio 62 says the 24 volt supply is too high. Eio 63 says it is too low.
Need help with Speed Queen error code Eio 62?
A technician confirms the cause on site and gives you the price in writing before any work starts.