Do you experience little or no air coming out of the hose? In most cases, this is not due to a broken product, but rather ice plugs caused by hose placement, or old deposits clogging the holes.

Follow the steps below to solve the problem.

1. Test the Compressor (Pump)
Before troubleshooting the hose, check that the compressor is delivering air.

• Disconnect the hose from the compressor.
• Start the compressor and hold a finger over the outlet (nipple).
• Result: If you feel distinct pressure against your finger, the compressor is working correctly. The problem is then in the hose (see below). If the compressor hums but gives no pressure, the diaphragm may need replacing (see Service).

2. No Air in Hose (Ice Plug)
The most common fault during freezing temperatures is that condensation water has frozen into an ice plug inside the hose.

• Cause: The hose does not have a constant slope. The hose must have only ONE uphill (from the water up over the railing/dock edge) and ONE downhill (down to the compressor).
• Solution: Check that the hose does not lie in loops or “dips” on the deck or dock. Condensation water must be able to run freely either down into the sea or back to the compressor. The slightest dip where water collects will freeze and block the air. Straighten the hose and ensure a “downhill slope”.

3. Poor or Stopped Flow (Kinks & Blockage)
If the hose is not hanging taut or has kinks, airflow can be restricted to certain parts of the hose.

• Blocked holes: If the hose has been kinked or at the wrong depth so that air has not flowed out through all holes, dirt and growth can penetrate and clog the inactive holes.
• Action: Stretch out the hose properly. Use cable ties to fix it so it hangs straight.
• Cleaning: If the holes have calcified or been affected by growth, you can carefully clear them by hand with a 0.7 mm drill bit. In the spring, you can wipe the hose with a scouring pad.

4. Uneven Bubble Flow
Is it bubbling a lot at one end of the hose but not the other?

• Adjust balance: The hose must hang horizontally. If part of the hose hangs deeper than the rest, the water pressure there will be higher, causing the air to choose the “easier path” out through the holes that are shallower.
• Solution: Adjust the ropes until the hose hangs straight and horizontally. Also, check that the hose has not twisted.