Husqvarna Automower Error 045 — Cutting Motor Fix

What Does This Error Mean?

Husqvarna Automower Error 045 means the cutting disc motor was blocked — it stalled or drew excessive current and the protection circuit shut it down. A stick, stone, large clump of wet grass, or foreign debris wedged under the cutting disc is the most common cause. Inspect and clear the cutting deck, then restart the mower.

Affected Models

Husqvarna Automower 115H
Husqvarna Automower 315
Husqvarna Automower 430X
Husqvarna Automower 450X
Husqvarna Automower 310 Mark II

Common Causes

A stick, twig, or stone wedged under the cutting disc is preventing it from spinning
A dense clump of long, wet grass jammed between the disc and the cutting deck
The cutting blades are worn or damaged and are unbalanced, causing the motor to overload
The cutting disc pivot bolt is over-tightened or corroded, preventing the disc from rotating freely
The cutting motor winding has developed an internal fault

How to Fix It

Stop the mower and disable it safely before inspecting

Press STOP and enter your PIN to disable the mower. Never touch the cutting disc area while the mower is armed — the cutting disc can spin without warning. Lay the mower on its back on a soft surface after fully disabling it.
Inspect the cutting disc area for debris

Look under the cutting disc for sticks, stones, string, wire, or compacted grass. The three small pivoting blades around the disc edge are a common collection point for debris. Remove anything found using pliers or a brush — do not use your fingers directly near the blade edges.
Spin the cutting disc by hand and confirm it rotates freely

With the mower safely disabled, try spinning the cutting disc by hand. It should rotate smoothly with minimal resistance. A disc that locks, grinds, or is very stiff indicates debris is still present or the disc pivot is jammed.
Check the cutting blades for wear, damage, or imbalance

The three cutting blades (small rectangular steel pieces) should be in good condition and pivot freely in their mounts on the disc. Worn-down, bent, or broken blades should be replaced — they reduce cutting performance and can cause vibration that stalls the motor. Replace all three blades at the same time for balance.
Restart the mower and monitor for recurrence

After clearing the debris and checking the disc, restart the mower from the charging station. Run a short manual session and observe whether Error 045 returns. If it clears, the obstruction was the cause. If it returns quickly without any debris, the cutting motor or disc bearing has an internal fault requiring service.

Frequently Asked Questions

How often should I replace the cutting blades on a Husqvarna Automower?

Husqvarna recommends replacing the three cutting blades every 1–3 months depending on lawn size and grass conditions. Some models include a blade replacement indicator in the app. Always replace all three blades at the same time and use genuine Husqvarna blades — third-party blades may be unbalanced and increase motor load.

Is Error 045 the same as Error 047 (Cutting Disc Lost)?

No. Error 045 means the cutting disc motor is blocked or overloaded — the disc is present but cannot spin. Error 047 means the disc has actually detached from the motor shaft (the retaining nut has come loose). If you find the cutting disc lying in the lawn, that is Error 047 territory. Inspect the deck to distinguish between the two.