WM3670HVA Drain Line Problems – Which Part Fixes This and How to Diagnose
Need the replacement part? Search your model number at for guaranteed fit and fast free shipping.
Understanding the Problem
If your Samsung WM3670HVA is leaving water in the tub, sounding like it struggles to drain, or showing error codes related to draining, the drain line (hose) or related parts are common culprits. The drain line can become blocked by lint, small clothing items, or debris; it can also crack or kink causing leaks or poor flow. Additionally, the drain pump or the short hose between the tub and pump can fail or become obstructed, producing the same symptoms. Diagnosing the exact cause requires a few visual and simple functional checks: inspect the external drain hose for kinks, cuts or clogs; remove the filter/access panel (if applicable) and check the pump inlet for debris; and run a spin/drain cycle while listening for the pump. Most repairs are straightforward: clearing or replacing a hose, unclogging the pump, or replacing the pump assembly and clamps. Always disconnect power and turn off water before working on the washer, and verify replacement part numbers with your model and serial number before ordering.
Common Symptoms
Washer won’t drain or drains slowly, water remaining in tub after cycle, puddle or leak under washer, error codes related to draining, loud or unusual pump noises.
Common Causes
- Clogged drain hose or pump inlet (lint, small clothing items, debris)
- Cracked, kinked or collapsed drain hose causing restricted flow or leaks
- Failed or jammed drain pump (impeller obstruction, electrical failure)
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
To confirm the faulty part: run a drain cycle and listen—no pump noise usually indicates a pump fault, rapid buzzing often means jammed impeller, and normal pump noise with poor flow suggests a clogged or collapsed drain hose. Physically remove the drain hose and blow or run water through it to check for blockages.
Frequently Asked Questions
How do I clear a clogged drain line on my WM3670HVA?
Turn off power and water. Disconnect the external drain hose from the back of the washer and from the standpipe or sink. Inspect visually and run water through the hose to flush debris (use a garden hose or tap). If it’s blocked internally, use a plumber’s snake or long flexible brush. Check and clear the pump inlet/filter area: remove any trapped debris or small items. Reconnect everything, secure clamps, and run a short drain cycle to confirm.
Can I replace the drain hose or pump myself, and what should I watch for?
Yes — replacing the drain hose or pump is a common DIY job if you are comfortable moving the washer and using basic tools. Safety first: unplug the washer and shut off water. For the hose, remove clamps, replace with the new hose ensuring no kinks and secure clamps at both ends. For the pump, you’ll typically need to remove the back or front access panel, disconnect hose clamps and wiring, swap the pump, then test for leaks. Always verify the replacement part number matches your washer’s model/serial and test a drain cycle after reassembly. If the pump requires splicing or complicated disassembly, consider a professional repair.
Real DIY Repair Stories
Be the first to share your repair story!
Share Your Repair Story
Your experience helps other homeowners fix their appliances. Tell us how it went!
Can't Fix It Yourself? Find a Local Technician
It's perfectly okay to call a professional. Some repairs require specialized tools, deep teardowns, or dealing with complex systems that are better left to the pros.
Find the Right Part for Your Appliance
Don't guess — search your exact appliance model number at PartsDiscount.com to find the correct OEM compatible replacement part. They offer fast free shipping, guaranteed fit, and thousands of parts in stock.
Your Free Parts Videos
Whether your dishwasher won't drain, your dryer stopped heating, or your fridge isn't cold, we've created simple repair guides for the most common appliance problems homeowners face. Each guide explains what's going wrong, the most likely causes, and which replacement parts fix the issue. When you're ready to order, we link directly to PartsDiscount.com where you can search by model number and get the right part shipped fast.