We know how frustrating it can be when your breast pump isn't working as expected. Most issues have simple fixes, so before you panic, try the steps below. If you've tried everything here and still need help, we're always happy to assist.
1. Low or No Suction / Reduced Milk Output
Note: If your pump has worked well in the past but isn't performing now, the most common reasons are assembly errors or parts that need replacing.
Step 1 – Check Your Flange Size
An incorrect flange size can cause poor suction, pain, or low milk output.
- Breast size and shape can change during your pumping journey due to hormonal shifts, swelling, or tissue changes.
- Don't rely on the size you used with a different pump — sizing varies between brands.
- Even if you're expressing milk, the flange size may not be ideal. Comfort and efficiency matter.
- Finding your perfect fit can take some trial and error.
- Re-measure regularly as hormonal fluctuations cause size changes.
Step 2 – Check Assembly
Ensure all parts are assembled correctly with no gaps where air could leak. Check the following:
- All parts must be completely dry before assembly.
- Make sure the motor is clicked firmly into place.
- The valve is pushed in securely (not at an angle).
- The diaphragm and flange shield (and flange insert, if using) are sealed tightly.
- All silicone parts are in good condition and not worn.
Step 3 – Positioning & Bra Fit
The pump should be centred over your nipple and held firmly for an airtight seal.
A well-fitted nursing/maternity bra is important:
- Too tight → may push the pump out of alignment or cause discomfort.
- Too loose → may cause air gaps.
Hands-free bra considerations: As your breast decreases in size during pumping while the collection bottle gets heavier, the bra fabric may stretch. This can cause the fabric to slide under the shield, creating suction loss. Check positioning regularly during longer sessions.
Step 4 – Levels & Modes
- Start in stimulation mode at a low suction setting to trigger letdown.
- Switch to expression mode once milk starts flowing.
- Gradually adjust suction levels to find your "maximum comfort level" (the highest setting you can use without discomfort — e.g. if you feel discomfort at level 5, then level 4 is your maximum comfort level).
- Higher suction doesn't always mean more milk — it's about what your body responds to.
- Some mothers find success staying in stimulation or massage mode the entire time, while others switch back and forth between modes multiple times per session.
- Experiment with different settings each pumping session.
Step 5 – Replace Worn Parts
Valves and other silicone parts lose elasticity over time — even if there's no visible damage.
Replacement schedule depending on pumping frequency:
- Diaphragm: Replace every 2-3 months
- Valve: Replace every 1.5-2.5 months
- Flange: Replace every 2-3 months
- Flange inserts: Replace every 1.5-2.5 months
Also check for cracks, tears, or loose fits. Remember: 99% of the time, wear isn't visible to the eye but parts still need replacing.
Step 6 – Breast Compressions
Many women need to do breast compressions while pumping for optimal output. Here's why: babies are way more efficient than pumps, and this is partly because they naturally use their little hands to massage and stimulate milk flow while they're feeding. We need to replicate that! Start at the top of your breast and work down toward your nipple with gentle circular pressure. Don't forget to massage the area near your armpits too. If you're not sure how to do this, YouTube has some great tutorials on breast compression techniques.
Step 7 – Other Factors Affecting Output
Milk supply changes: Stress, hormones, illness, diet, or changes in schedule can affect output.
Hormonal changes: Your hormones play a big role in milk production. Recent periods, pregnancy, or starting birth control can temporarily impact supply.
Baby's age: Generally, the older your baby is when you start pumping, the harder it may be to get your body to respond to a breast pump. As babies get older, hormonal changes make responding to pumps more challenging, even with perfect technique.
Previous breastfeeding history: If you've breastfed previous babies for extended periods, your body may be less responsive to pumping.
Blocked ducts: Try gentle massage or a warm compress before pumping.
Health changes: Thyroid issues, medication, or other medical conditions can impact supply.
Pumping schedule: Inconsistent or irregular pumping sessions can lead to lower supply over time.
Switching pumps: Your body may take 1–2 weeks to adjust to a new model. Don't get anxious about reduced output during this adjustment period — persevere and your body should adapt.
2. Pain When Pumping
Pain usually points to flange fit or positioning.
- Check flange size and ensure your nipple is centred.
- Use the correct mode. Start in stimulation mode, then switch to expression.
- Reduce suction to a comfortable level.
- Never pump higher than your maximum comfort level.
3. Leaking
Leaks can happen from several spots. Here's what to check:
Leaking from the bottom of the flange shield:
- Shield needs replacing (recommended every 2-3 months).
- Shield isn't snapped in properly all the way around.
- Shield is inserted the wrong way (pouring spout at the bottom instead of top).
- Skin is moist or oily — wipe gently with a baby wipe or damp paper towel before pumping, then ensure skin is dry.
- Bra is catching on the pump or moving up and down due to incorrect strap fitting.
- Parts warped from dishwasher/heat sterilisation (over 100°C).
Leaking from the tunnel/flange hole:
- Flange too big (refer to fitting guide).
- Leaning too far back — sit upright or slightly forward (45° forward when removing pump).
- Nipple off-centre.
- Pump not held tightly — adjust bra or use additional straps provided.
- Valve not pushed up firmly enough.
Extra leak prevention tips:
- Always dry parts completely before use.
- Don't overfill (max 180ml capacity).
- Replace worn parts according to schedule.
- When removing pump, lean forward 45° to prevent catching.
4. Battery & Charging Issues
Charging:
- Use at least a 5V-1A charger (faster chargers may charge quicker but could cause an incomplete charge).
- Try a different cable and power outlet.
- Check that no milk or liquid has entered the charging port.
Battery life: Battery capacity naturally reduces over time (like a phone battery) — this is normal for lithium-ion batteries.
Auto shut-off feature: Designed to prevent overheating and safety issues. If it activates, just restart to continue. However, if you're pumping for longer than 20-30 minutes, this usually indicates incorrect flange size, unsuitable mode/suction level, or improper positioning.
5. Sound Issues
Squeaking
Common causes:
- Parts not assembled correctly or not completely dry.
- Diaphragm not sealed properly onto the connector.
Note: Some noise is unavoidable due to moving parts and motor operation. Two motors may not sound exactly the same — this is normal and doesn't affect performance.
Air Hissing
Usually caused by:
- Worn/damaged valve (most common cause).
- Cracks in the cup or loose parts.
- Parts not completely dry or sealed properly.
Replace valves first, then check other components for damage.
6. No Power
- Check the power adapter is clicked in fully.
- Try another adapter and cable.
- Ensure no milk or liquid has come in contact with the motor or charging port.
- If still no power, contact us.
Need More Help?
If you've tried these steps and your pump still isn't working, or if you're having an issue that isn't covered in this guide, send us:
- A short description of the problem.
- Close-up photos or a short video of your pump.
We'll help you get back to pumping as quickly as possible. 💛
Quick reminder: About 99% of breast pump issues are related to parts needing replacement or assembly problems. When in doubt, check your parts replacement schedule and assembly first!