Robomow Not Working? Complete Troubleshooting Guide

Finding the Right Robomow Fix Fast

Robomow already has six dedicated guides on this site — blades, error codes, charging, battery replacement, boundary wire, and app connectivity each have their own full diagnostic. This article isn't here to repeat any of that. It's here to help you land on the right one quickly, and to cover the two things none of them touch: first-time installation mistakes and what's actually different across the RS, RX, and RC series.

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Try This First (2 Minutes)

• Check the on-board display or app for the exact status message rather than guessing from a beep pattern alone
• Note which series you own — RS (mid-range), RX (compact), or the older RC line — since dock behavior and blade access differ between them
• Confirm the mower isn't simply waiting out a scheduled pause or rain delay
• Power cycle from the main switch before assuming a deeper fault

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Fix 1: Won't Charge or Stuck at the Base Station (Works Around 20% of the Time)

How to Fix:

1. Power off and wipe the charging contact plates on both the mower and base station
2. Confirm the mower docks square against the station, not at an angle
3. Check the base station's power adapter and outdoor cable for damage

Time: 10-15 minutes | Cost: Free | Success Rate: ~20% | Difficulty: Easy

Our dedicated Robomow won't-charge guide covers the full contact, alignment, and power-supply diagnostic in more depth.

If this doesn't work: Move to Fix 2 if the display mentions the perimeter wire instead.

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Fix 2: Perimeter Wire Problem Alert (Works Around 15% of the Time)

How to Fix:

1. Check the base station's signal indicator for a solid loop
2. Walk the visible wire path for cuts near recent digging or edging
3. Splice any break with waterproof connectors rated for direct burial

Time: 15-30 minutes | Cost: Free, or $10-20 for splice connectors | Success Rate: ~15% | Difficulty: Moderate

Our dedicated Robomow boundary wire fault guide covers the full trace-and-splice process, including how to isolate a base station fault from an actual wire break.

If this doesn't work: Move to Fix 3 if the blades aren't engaging.

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Fix 3: Blades Not Spinning (Works Around 15% of the Time)

Safety note: Power off the mower and disconnect the battery before reaching near the blades.

How to Fix:

1. Power off and check for grass buildup wrapped around the blade disc
2. Clear debris from underneath the cutting deck
3. Reconnect the battery and run a short test cycle

Time: 10-20 minutes | Cost: Free | Success Rate: ~15% | Difficulty: Easy

Our dedicated Robomow blade guide covers the full debris, blade installation, and motor coupling diagnostic.

If this doesn't work: Move to Fix 4 for battery-specific problems.

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Fix 4: Battery Not Holding a Charge (Works Around 10% of the Time)

How to Fix:

1. Check whether runtime has noticeably shortened compared to last season
2. Confirm the mower is completing full charge cycles rather than being interrupted
3. If the battery is several seasons old, reduced capacity is normal aging

Time: 10 minutes | Cost: Free to check | Success Rate: ~10% | Difficulty: Easy

Our dedicated Robomow battery replacement guide covers exactly when to replace it and the steps for RS and RX series.

If this doesn't work: Move to Fix 5 if the app won't connect.

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Fix 5: App Won't Connect or Shows Offline (Works Around 10% of the Time)

How to Fix:

1. Confirm your home Wi-Fi is broadcasting on the 2.4GHz band, not just 5GHz
2. Move the router closer to the base station or add a Wi-Fi extender if the signal is weak there
3. Forget and re-pair the mower in the app rather than retrying a stale connection

Time: 10-15 minutes | Cost: Free, or $20-40 for a Wi-Fi extender | Success Rate: ~10% | Difficulty: Easy

Our dedicated Robomow app connectivity guide covers band mismatches and signal-range fixes in full.

If this doesn't work: Move to Fix 6 for first-time setup problems on a new installation.

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Fix 6: First-Time Setup and Installation Mistakes (New Installations, Works Around 15% of the Time)

A real share of "broken" Robomow calls on a brand-new install turn out to be setup issues rather than a defective mower.

How to Fix:

1. Confirm the perimeter wire forms a single unbroken loop with no crossed sections before the mower's first calibration run
2. Check the base station's placement matches Robomow's clearance guidance — too little straight wire on either side of the station causes chronic docking failures
3. Review any exclusion zones set during setup for narrow transit passages that are too tight for the mower's turning radius
4. Run the guided installation/calibration routine again from the app rather than assuming a hardware fault on a mower that's never completed a full cycle

Time: 20-40 minutes | Cost: Free | Success Rate: ~15% | Difficulty: Easy-Moderate

Model notes: RS-series units generally support larger areas and multiple exclusion zones; RX-series compact models have a tighter turning radius, which makes transit-passage width a more common first-install snag. Older RC-line units use a simpler single-zone setup with fewer configuration steps to get wrong.

If this doesn't work: If the display shows a specific alert not covered here, check our Robomow error codes guide before continuing to troubleshoot blind.

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When DIY Won't Work - Repair vs Replace

Signs it's time for professional service:

• A perimeter wire fault keeps recurring despite a confirmed intact loop and clean splices
• The mower fails first-time calibration repeatedly after confirming wire continuity and station placement
• The display shows an alert not covered in our error codes guide or your model's manual

Cost comparison: Everything above is free or low-cost to attempt yourself. A dealer diagnostic for a suspected control board fault typically runs $60-100.

Warranty check: A confirmed hardware fault is generally covered within the warranty period — wire damage from landscaping and setup mistakes on your end usually aren't.

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Prevention Tips

• Walk the perimeter wire each spring before the first mow, especially near the base station
• Clean charging contacts every few weeks during the season
• Keep app and mower firmware current
• Review exclusion zones after any landscaping changes
• Winterize properly each fall — see our dedicated Robomow winterizing guide

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FAQ

Which Robomow guide should I actually read for my problem?

Use this article to identify the category first, then follow the link to the matching dedicated guide for the full step-by-step diagnostic — this one is intentionally a summary and index, not a replacement.

What's different between the RS, RX, and RC series when troubleshooting?

RS models generally handle larger areas with multiple zones, RX models have a tighter turning radius that makes transit-passage width more critical, and older RC units use a simpler single-zone setup.

My brand-new Robomow won't complete its first mow. Is it defective?

Setup issues — wire loop continuity, base station clearance, and exclusion zone width — are far more common on new installs than an actual defect. Rerun the guided calibration before assuming a hardware problem.

Do I need a technician for a control board issue?

Yes — control board and motor electronics repairs should go through an authorized Robomow dealer, especially while the mower is under warranty.

Is a first-install setup mistake covered under warranty?

No. Warranty covers confirmed hardware defects, not wire installation or configuration errors made during setup.

Where do I find the full charging or blade fix steps?

See our dedicated Robomow won't-charge guide and blade not spinning guide — this article intentionally summarizes and links out rather than repeating either.