Error code · Blendtec · Blenders

Blendtec Blender Error Message: Invalid Blend Cycle

"Error: Invalid blend cycle" means the blend cycle stored in the control is not valid. The manual says to press the cancel button or unplug the blender and plug it back in, and to call your Blendtec service agent if the message stays.

Medium · inspection needed

Medium: a single stored cycle is rejected, and other cycles may still be usable.

(844) 393-0816

Code: Error: Invalid blend cycle
Maker: Blendtec
Equipment: Blenders
Applies to: Blendtec Stealth 875/885 (and 895 in contents), Connoisseur 825, Chef 775, EZ 600, Chef 600

What does Blendtec error: invalid blend cycle mean?

A Blendtec cycle is a stored program of speeds and times that the control runs when you press a cycle button. Before it runs the program, the control reads it back, and if the stored cycle is not valid it stops and displays "Error: Invalid blend cycle". The manual groups this message with its Reset Errors for the Stealth 875/885 and Connoisseur 825, so the first step is a reset rather than a repair. The manual's meaning is brief: the stored blend cycle is not valid. It gives no list of causes, no instructions for reprogramming, and no statement about whether a power cycle restores the original program. A technician with the maker's service information would decide whether the stored data can be restored or the control needs replacing. Until then, the affected cycle should not be used.

Affected models and control systems

Blendtec Stealth 875/885 (895 also appears in the contents), Connoisseur 825, Chef 775, EZ 600 and Chef 600. The manual's Reset Errors heading names the Stealth 875/885 and Connoisseur 825.

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

The display shows the invalid blend cycle text
A cycle button will not start a blend
The message returns whenever the same cycle is selected

Possible causes

Likely causes — what usually sits behind error: invalid blend cycle on this control. A technician confirms which one it is before any part is replaced.

Cycle data corrupted by a power loss while the control was storing it
A control board whose memory no longer holds the stored cycles correctly
A touch panel press that selected a cycle slot with no usable program

Safe checks before calling for service

✓ What an operator can do

Press the cancel button and watch whether the message clears.
If not, unplug the blender, plug it back in and try again.
Try a different cycle or the manual pulse control to see if only one cycle is affected.
Write down which cycle you selected when the message appeared, and say whether other cycles still run.

How a technician diagnoses error: invalid blend cycle

Confirm which cycle triggers the message and whether the others run normally.
Check the supply for dips or outages that could have interrupted a stored-cycle write.
Look for a recent software or settings change on that unit.
Restore or reload the cycle data using the maker's service procedure, if one exists for the model.
Replace the control board only after reloading fails, and confirm every cycle afterward.

! Leave this to a technician

Reloading cycle data needs the maker's service tools and procedure for the specific control, which an operator does not have.
The control board sits behind live line-voltage parts in the base, so opening it is work for a trained person.

How error: invalid blend cycle differs from similar codes

Unlike the motor control message, this one points at stored data rather than a moving part.

Technical reference

Document: Commercial Series Owner's Manual and User Guide (Blendtec)
Edition: All Models, US ENG, CA FRE, MX SPA, Aug 2017 (copyright 2015 Blendtec, Inc.)
Models / control: Blendtec Stealth 875/885 (and 895 in contents), Connoisseur 825, Chef 775, EZ 600, Chef 600
Section: Section 6 Troubleshooting - 6.2 Error Messages on Display, printed pp. 47-49 (PDF pp. 49-51)
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.

→Same maker

Related Blendtec blender error codes

Error: Motor control error detectedBlendtec Blender Error Message: Motor Control Error Detected Error: Touch controller not detectedBlendtec Blender Error Message: Touch Controller Not Detected Error: Touch controller output is invalidBlendtec Blender Error Message: Touch Controller Output Is Invalid Overload ErrorBlendtec Blender Overload Error: Motor Overloaded Overtemp ErrorBlendtec Blender Overtemp Error: Motor Overheating Touch ErrorBlendtec Blender Touch Error: Sensor Touched E-01 to E-06Blendtec Chef 775 Blender Error Codes E-01 to E-06 Error: Overload condition detectedBlendtec Commercial Blender Error Code Overload: Motor Overloaded Error: Overtemp. Condition detectedBlendtec Commercial Blender Error Code Overtemp: Motor Too Hot Error: Read / Write error detectedBlendtec Commercial Blender Error Code Read / Write Error: Stored Data Error: Reset error detectedBlendtec Commercial Blender Error Code Reset Error: Unexpected Reset Error: Temp. Sensor not detectedBlendtec Commercial Blender Error Code Temp Sensor: Not Detected

Error: Invalid blend cycleQuestions about Blendtec error: invalid blend cycle

Is it safe to blend with a different cycle?

The manual does not forbid it. If another cycle runs normally, use that one until the service agent has looked at the unit.

Does unplugging fix a bad stored cycle?

The manual lists it as a reset step, but it does not promise that the stored cycle is restored. Expect that it may come back.

Is this the same as the motor control message?

No. They share the same reset steps, but this one concerns the stored cycle and the motor message concerns the drive circuit.

Book a visit

Need help with Blendtec error: invalid blend cycle?

A technician confirms the cause on site and gives you the price in writing before any work starts.

(844) 393-0816

Open the booking form