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Kenmore Dryer Error Code F70

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 11, 2026
⚠ High Severity 🔧🔧🔧 Advanced DIY

Communication failure between control boards

The most common cause of the F70 error on a Kenmore dryer is loose harness between UI and main board (~40% of cases); start with: power cycle.

💰 DIY cost: $0–$250 👨‍🔧 Pro cost: $220–$450 Save $220+ by doing it yourself
Kenmore Dryer error code F70 on the display panel
How the F70 code appears on a Kenmore dryer display

What Does Error Code F70 Mean on a Kenmore Dryer?

Communication failure between control boards.

F70 fires when the main control board loses the internal serial data link to the user interface board. The control monitors expected communication signals across the console-to-main harness; when handshakes stop for a set interval, it logs a communication fault rather than a specific input or sensor error. That distinguishes it from function-specific codes like F01 or F02, which point at the main board's own memory or wiring. A loose connector, a failed UI board, a failed main board, or a power event can all break the link.

Models affected: Whirlpool-platform Kenmore 110 Series electronic-control dryers with a separate user-interface board and main control board
What owners report: Owners commonly report F70 showing up right after a storm, brownout, or a plug being pulled mid-cycle, and a ten-minute unplug often clears these surge-related cases. When the code returns instantly at power-up, reseating the harness between the console and main board is the usual quick win before assuming a board has actually failed.

What Causes Error Code F70?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Loose harness between UI and main board 40% of cases
  2. 2
    Failed user interface board 30% of cases
  3. 3
    Failed main control board 25% of cases
  4. 4
    Power surge glitch 5% of cases

How to Fix Kenmore Dryer Error Code F70

🔧🔧🔧 Advanced DIY Est. time: 1–3 hours
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Power cycle

    Unplug for 10 minutes — a surge glitch often clears.

  2. 2

    Reseat the communication harness

    Open the console and rear panel and reseat the connectors at both boards.

    ⚠️ Unplug the dryer before opening panels.
  3. 3

    Replace the failed board

    If reseating doesn't help, the UI board is the more common failure; replace it, then the main board if needed.

    🔩 Kenmore dryer UI board ($80–$180) 🔩 Kenmore dryer main control board ($120–$250)

How to Reset Error Code F70

Unplug for 10 minutes. If F70 returns immediately at power-up, a board has failed.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

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When to Call a Professional

Board-vs-board diagnosis is easiest with a tech's diagnostic mode access — call a pro if the reset doesn't stick.

Average professional repair cost for this issue: $220–$450

Related Error Codes

F01
Main electronic control board failure
⚠ High Severity
F02
Keypad / user interface stuck button fault
⚠ Medium Severity

Same Code on Other Brands

Error code F70 appears on these other brands too. See every brand that shows F70 →

Whirlpool logo
Whirlpool Dryer F70
Communication error — no signal between control boards
Miele logo
Miele Dishwasher F70
Flow meter fault — water quantity sensor failure
KitchenAid logo
KitchenAid Dryer F70
Communication failure between main control and user interface

Find Replacement Parts

Use these links to find the exact replacement parts for your Kenmore Dryer:

🔩
Search PartSelect
Kenmore Dryer repair parts
🔧
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Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More Kenmore Dryer Error Codes

F22 Outlet thermistor failure — reading open F23 Outlet thermistor failure — reading shorted F28 Moisture sensor fault PF Power failure during the cycle AF Restricted airflow detected

Frequently Asked Questions

Can I keep using my Kenmore Dryer when error F70 appears? +
It is not advisable. The dryer may still power on, but running it while F70 is active can worsen the control-board fault or damage related parts. Treat it as a soon-as-possible repair.
What most commonly causes F70 on a Kenmore Dryer? +
Across reported Kenmore dryer repairs, the most frequent is loose harness between UI and main board (40% of cases), failed user interface board (30%), then failed main control board (25%). Check them in that order before replacing any parts.
F70 keeps coming back after a reset — what should I check next? +
A reset only clears the stored F70 fault; if it returns, the control-board problem is still present. Move on to the physical checks — power cycle, then reseat the communication harness — since the code will reappear until the root cause is resolved. This is an advanced repair involving deeper disassembly or electrical testing.
How much does it cost to fix Kenmore Dryer error F70? +
A DIY repair typically runs $0–$250 in parts, versus $220–$450 for a professional service call, so handling it yourself saves around $220. Expect the work to take 1–3 hours.
Which Kenmore Dryer models show error F70? +
F70 is documented on Whirlpool-platform Kenmore 110 Series electronic-control dryers with a separate user-interface board and main control board. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 11, 2026.

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