Hello, stumped on this issue.
Initial E64 Heating element issue. R&R heater assembly and both sensors.
Would not allow diagnostics mode to run. Did factory reset.
Powered up and immediately got E71 outlet control thermistor, R&R. Powered up and immediately got same E71.
Resistance checks within parameters. All wiring appeared good. Factory reset.
Replaced dryer control board and user interface control board. Both had recent firmware updates. All replacement parts factory OEM.
A couple of questions;
1. Is there a "hard" reset for these dryers?
2. Running the diagnostics mode would be helpful.
3. Is there software available that would allow me to connect directly to both boards?
4. Any advice is appreciated.
Thanks in advance for your time and help.
Cheers !
Hi MikeK53,
You've already covered a lot of ground, and it’s clear you've been thorough—nice job so far. Based on your description, here’s what I can offer:
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Hard Reset: Unfortunately, most Electrolux/Frigidaire dryers (assuming that’s what you're working with) do not have a "hard reset" beyond the standard factory reset and power cycling. However, unplugging the unit for 10–15 minutes can sometimes clear persistent memory flags. Also, ensure the door is shut and latch recognized during reset attempts.
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Diagnostics Mode Access: If diagnostics mode won’t start, it often points to deeper control board or communication issues. Ensure the ribbon cables and connector pins between the UI and main control board are fully seated and undamaged. Sometimes diagnostics mode is blocked by a fault lock from the thermistor failure (E71), which could still be "latched" internally.
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Direct Software Access: Electrolux and other OEMs use proprietary diagnostic software (e.g., ServiceMatters for Whirlpool, etc.) that’s generally not available to the public. Authorized technicians sometimes use a service dongle or tech-only app to interface with control boards. Unfortunately, there's no consumer-accessible software available to fully access or flash firmware on Electrolux control boards directly.
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Additional Suggestions:
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Double-check thermistor resistance cold (~50k ohms for many outlet thermistors at 70°F).
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Trace wiring from the thermistor back to the board with continuity test—issues may lie in a break or corrosion inside a connector, even if visually intact.
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Since you’ve replaced both boards and the thermistor with OEM parts, I’d suspect either a harness fault or a software miscommunication. A board that’s not recognizing a valid thermistor input will throw an E71 every time, even if the part itself is fine.
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Lastly, if everything checks out and the E71 remains, reaching out to Electrolux tech support (or a local authorized service tech with the interface tool) might be necessary for EEPROM-level diagnostics or firmware reflash.
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