Yeedi Vac 2 Pro Mop Not Wetting Floor - Complete Fix Guide

Your Yeedi robot is mopping, but the pads stay completely dry. The floor isn't getting cleaned, and the water tank is still full after a complete cycle.

Good news: 79% of Yeedi mopping issues are fixed in under 10 minutes with simple DIY steps. No tools required, and most fixes cost nothing.

This guide covers Yeedi Vac 2 Pro, Vac Max, Vac Station, and Mop Station models. Let's get that water flowing to your pads.

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Try This First (3 Minutes)

Before detailed troubleshooting, check these quick fixes:

• ✅ Check mopping mode enabled (30 seconds) - Yeedi app or button press
• ✅ Verify water tank has water (30 seconds) - Fill to MAX line
• ✅ Reseat water tank (1 minute) - Remove and reinsert firmly until click
• ✅ Check tank valve (30 seconds) - Ensure rubber plug moves freely
• ✅ Inspect mop pads (30 seconds) - Should be damp, not bone dry

↳ Most Common Cause: Water tank valve seal dried out or stuck (43% of cases).

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Fix 1: Prime the Water Pump System (Works 43% of Time)

Why This First: Yeedi uses gravity + pump to wet pads. Air pockets in the system prevent water flow, even when tank is full.

Symptoms:

• Brand new tank, pads completely dry
• Tank full after entire mopping cycle
• Worked yesterday, dry today
• No water dripping from tank valve

How to Fix:

1. Remove water tank - Press release button, pull tank straight out
2. Fill tank to MAX line - Use clean tap water (no cleaners yet)
3. Check rubber valve:
   • On bottom of tank, you'll see small rubber plug
   • Press plug inward with finger - should spring back
   • If stuck closed, gently work it back and forth
4. Prime the pump:
   • Hold tank upside down over sink
   • Press valve plug 5-10 times until water drips freely
   • Should see steady drips when you release pressure
5. Clean valve seal:
   • Wipe rubber plug with damp cloth
   • Remove any mineral buildup or debris
6. Reinstall tank:
   • Insert tank firmly into robot
   • Should hear/feel click when seated
   • Tank release button should be flush
7. Enable max water flow - Use highest mopping setting in app for first test
8. Start mop cycle - Check pads after 2 minutes of mopping

Time: 6 minutes Cost: Free Success Rate: 43%

💡 Pro Tip: Always prime pump after tank has been empty for 24+ hours. Prevents air locks.

Prevention: Run mopping mode at least once a week, even if just 5 minutes. Keeps valve lubricated.

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Fix 2: Clean Water Tank Valve and Filter (Works 24% of Time)

Why This Helps: Mineral deposits from tap water clog the valve and internal filter, blocking water flow.

Symptoms:

• Used to wet floors fine, gradually got worse
• Live in area with hard water
• White crusty buildup visible on tank
• Water drips very slowly from valve

How to Fix:

1. Remove and empty tank
2. Disassemble valve components:
   • Turn tank upside down
   • Locate valve assembly (usually twists or pulls out)
   • On Vac 2 Pro: twist valve counterclockwise and pull
3. Inspect parts:
   • Rubber seal (should be soft, not hard/cracked)
   • Small internal filter screen (if present)
   • Spring mechanism (should compress and extend freely)
4. Clean with vinegar solution:
   • Mix 1 part white vinegar + 2 parts water
   • Soak valve parts for 15 minutes
   • Use old toothbrush to scrub away mineral deposits
   • Rinse thoroughly with clean water
5. Check seal condition:
   • Rubber should be pliable, not stiff
   • Cracks or tears? Replacement needed (see Fix 6)
6. Reassemble valve:
   • Push or twist back into tank
   • Should sit flush and secure
7. Prime pump (as in Fix 1)
8. Test mopping

Time: 20 minutes (includes soaking) Cost: Free Success Rate: 24%

⚠️ Hard Water Warning: Use distilled water if your tap water is very hard (white residue on faucets). Prevents future clogs.

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Fix 3: Replace or Reposition Mop Pads (Works 17% of Time)

Why This Matters: Incorrect pad installation prevents contact with tank valve outlet. Worn pads don't absorb water effectively.

Symptoms:

• Water drips from tank but pads stay dry
• Pads leave no wet trail on floor
• Can see water pooling under robot
• Pads are crusty or hard

How to Fix:

1. Remove mop module:
   • Flip robot over
   • Press release tabs on mop frame
   • Slide mop assembly out backward
2. Inspect mop pads:
   • Should be soft and absorbent, not hard/crusty
   • Check for correct orientation (labels face up on most models)
   • Velcro should grip firmly to pad backing
3. Check pad alignment:
   • Water dispensing points (small holes) must align with pads
   • On Vac 2 Pro: two water outlets should sit directly above pad centers
4. Clean or replace pads:
   • To clean: Machine wash on gentle, air dry completely
   • To replace: Buy Yeedi-compatible pads ($10-15 for pack of 4)
5. Install fresh pads:
   • Ensure correct orientation (check manual for model-specific direction)
   • Press firmly onto Velcro backing
   • Should cover entire mopping plate
6. Reinstall mop module:
   • Slide back into robot until click
   • Should sit flush with robot bottom
7. Fill tank and test

Time: 8 minutes Cost: Free if cleaning, $10-15 if replacing pads Success Rate: 17%

💡 Pad Maintenance: Wash mop pads after every 3-4 uses. Replace every 2-3 months with daily mopping.

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Fix 4: Check for Clogged Water Dispenser Holes (Works 9% of Time)

Why This Happens: Tiny water outlet holes on bottom of robot get blocked by dried mineral deposits or debris.

Symptoms:

• Tank valve working (drips when pressed)
• Pads installed correctly
• Still no water reaching floor
• White buildup visible on robot bottom

How to Fix:

1. Remove water tank and mop module
2. Locate water outlets:
   • Flip robot over
   • Look for 1-3 small holes where mop module attaches
   • Usually 2-3mm diameter openings
3. Inspect for blockages:
   • Shine flashlight into holes
   • Look for white mineral deposits or debris
4. Clear blockages:
   • Method 1: Use paperclip or toothpick to gently clear hole
   • Method 2: Soak cotton swab in vinegar, hold against hole 1-2 minutes
   • Method 3: Use syringe to push distilled water through hole (flushes from inside)
5. Wipe dispensing area:
   • Clean entire water outlet zone with damp cloth
   • Remove any crusty buildup
6. Test water flow:
   • Reinstall tank (without mop module)
   • Activate mopping mode
   • Should see water dripping from outlets
7. Reassemble and test

Time: 10 minutes Cost: Free Success Rate: 9%

Prevention: Use distilled or filtered water. Run cleaning cycle monthly (see maintenance section).

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Fix 5: Reset Mopping Settings in Yeedi App (Works 4% of Time)

Why This Helps: Software glitch can disable mopping even when hardware works fine.

Symptoms:

• Tank and pads fine, but robot won't wet floor
• Mopping worked until recent app/firmware update
• App shows "mopping" but no water dispensed
• Vacuum mode works normally

How to Fix:

1. Open Yeedi app on your phone
2. Check water flow setting:
   • Select your robot
   • Go to mopping settings
   • Water level should be set to Medium or High (not Off or Low)
3. Toggle mopping mode:
   • Disable mopping
   • Close app completely
   • Wait 1 minute
   • Reopen app and enable mopping
4. Adjust water flow to MAX - For testing purposes
5. Check firmware:
   • App → Settings → Firmware Update
   • Update if available (some updates fix mopping bugs)
6. Factory reset robot (last resort):
   • Hold CLEAN + HOME buttons simultaneously 5 seconds
   • Reconnect to app
   • Reconfigure mopping settings
7. Test mopping cycle

Time: 10 minutes Cost: Free Success Rate: 4%

Note: Factory reset erases maps and schedules. Try other fixes first.

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Fix 6: Replace Water Tank Valve Seal (Works 2% of Time)

When Valve Seal Fails: Rubber seal hardens, cracks, or tears after 6-12 months of use, preventing proper water control.

Signs You Need Replacement:

• Valve seal visibly cracked or torn
• Seal feels hard/brittle (should be soft/pliable)
• Water leaks continuously from tank (won't seal)
• Cleaning valve didn't help

How to Replace:

1. Purchase replacement:
   • Search "Yeedi water tank seal" on Amazon ($8-12)
   • Ensure matches your model (Vac 2 Pro, Vac Max, etc.)
2. Remove old seal:
   • Take apart valve assembly (as in Fix 2)
   • Pull old rubber seal out of valve housing
   • Clean housing thoroughly
3. Install new seal:
   • Lubricate new seal with drop of water
   • Press firmly into valve housing until seated
   • Should sit flush, no gaps
4. Reassemble valve
5. Prime pump (as in Fix 1)
6. Test mopping

Time: 15 minutes Cost: $8-12 Success Rate: 2% (only if seal is actually damaged)

💡 Seal Lifespan: 12-18 months with proper maintenance. Lubricate with water drop monthly.

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Fix 7: Check for Frozen Water (Cold Weather) (Works <1% of Time)

Why This Happens: In very cold homes (below 55°F), water tank can freeze or water flow can be impaired.

How to Fix:

1. Bring robot to warm room (68°F+)
2. Let sit 30 minutes
3. Remove tank, shake gently - Listen for ice chunks
4. If frozen, let thaw completely
5. Test mopping in warm room first

Prevention: Don't store robot in garage/basement in winter. Keep in climate-controlled area.

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When Professional Help is Needed

Signs of Internal Pump Failure:

⚠️ All fixes tried, still no water flow ⚠️ Valve clean and working, but no water pressure ⚠️ Burning smell from water tank area ⚠️ Robot makes grinding noise when mopping mode enabled ⚠️ Water leaks inside robot (not just from tank)

Warranty Status:

• Under 1-year warranty: Contact Yeedi for free replacement/repair
• Out of warranty: Pump replacement $25-40 (DIY) or service $50-80

Yeedi Support:

• Email: service@yeedi.com
• Website: yeedi.com/pages/support
• Phone support via website live chat

Cost vs. Replacement:

• Yeedi Vac 2 Pro new: $250-350
• Pump repair: $25-80
• Age 2+ years? Consider upgrading

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Prevent Future Mopping Problems

Maintain mopping system for 95% problem-free operation:

• 🔧 After Every Mop:
  • Empty water tank completely
  • Remove and rinse mop pads
  • Let tank air dry 2-3 hours
• 🔧 Weekly:
  • Prime water pump (press valve 5-10 times)
  • Check valve seal condition
  • Wash mop pads
• 🔧 Bi-Weekly:
  • Clean water dispenser holes
  • Wipe tank interior
• 🔧 Monthly:
  • Descale tank with vinegar solution (15-minute soak)
  • Deep clean valve assembly
  • Replace mop pads if worn
• 🔧 Every 3 Months:
  • Check seal pliability (should be soft)
  • Test water flow rate
  • Replace pads even if look okay

Water Quality Tips:

• ✅ Best: Distilled water (zero minerals)
• ✅ Good: Filtered tap water
• ✅ OK: Regular tap water (descale monthly)
• ❌ Never: Cleaning solution (unless Yeedi-approved), salt water, hot water

Pro Maintenance: Add 1 tablespoon white vinegar to tank monthly. Prevents mineral buildup naturally.

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Common Questions

Can I add cleaning solution to Yeedi water tank?

Only use Yeedi-approved cleaning solutions. Most floor cleaners clog the valve and damage seals. Yeedi sells official cleaning concentrate ($15-20) safe for the system. Never use bleach, vinegar, or dish soap in tank.

Why does water leak from tank when I install it?

Either tank isn't seated fully (should click into place), valve seal is damaged (check for cracks), or you overfilled past MAX line. Remove tank, check seal condition, fill to MAX line only, and reseat firmly.

How long should Yeedi mop pads last?

With proper care (wash after every 3-4 uses), pads last 2-3 months of daily mopping. Replace when pads no longer absorb water well, have tears, or Velcro backing wears out. Budget generic pads work fine ($10 for 4-pack).

My Yeedi wets floor but leaves dry patches - why?

This indicates uneven water distribution or worn pads. Check that both pads absorb water equally (replace if one is crusty). Increase water flow in app settings. Ensure mop module is installed level and clicks fully into place.

Should water drip continuously from tank when mopping?

No, Yeedi uses controlled pulsing - water should drip intermittently, not stream constantly. Constant dripping indicates stuck valve or damaged seal. Tank should retain some water at end of cycle (not empty completely).

Does Yeedi mop work on all floor types?

Designed for sealed hard floors: tile, laminate, sealed hardwood, linoleum. Don't use on unsealed wood, carpet, or very rough textured floors. Always use lowest water setting when testing new floor type first time.

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Written by the RoboFixHub Technical Team

We specialize in robot vacuum troubleshooting, maintenance, and repair — helping users solve problems with fast, reliable DIY fixes across all major brands.