This article will help guide you through some basic troubleshooting steps to determine the location and cause of a leak on a reverse osmosis system. This information applies to models: ERO385, ERO175.
Where is the leak coming from?
Filter Connections
A couple things to try:
- Pre or Post Filter - Swap the Pre/Post Filters around and see if the leak follows a filter. If it does, that Filter needs replacing. If the leak stays in the same spot, the Manifold/Head Assembly needs to be replaced.
- Middle Filter - Replace the middle filter and see if the leak continues. If it does, the Manifold/Head Assembly needs replacing.
Hose Connections
If it's leaking from the red or green hoses:
- You'll need to turn the water off to the system and remove the leaking hose from the connection. Cut a clean square end. Then reconnect and turn on the water supply again.
To remove hose:
- Check for leaks. If it's still leaking, you'll need to replace the Collet and O-ring.
If it's leaking from the yellow hose:
- You'll need to turn the water off to the system and then turn your faucet on to let the tank empty. We need to release the pressure on the unit, otherwise it may be messy.
- When the tank is empty you'll remove the leaking hose from the connection (pictured below). Inspect the hose and see if you notice any nicks, scratches or rough spots.
To remove hose:
- Cut a clean square end. Then reconnect the hose by giving it an extra hard push into the system to confirm it's inserted all the way.
- Now you can turn on the water supply again. You'll want to watch for leaks here. If it's still leaking, you'll need to replace the Collet and O-ring.
If it's leaking from the blue hose:
- You'll want to remove the post filter first.
- Then you can remove the hose.
To remove hose:
- Cut a clean square end. Then reconnect the hose by giving it an extra hard push into the system to confirm it's inserted all the way.
- Now you can reattach the postfilter by inserting it in place and turning to the right. Go ahead and turn on the water supply again.
- Check for leaks. If it's still leaking, you'll need to replace the Collet and O-ring.
Faucet
If the water is leaking from the hole on the faucet base, visit our Leaking Air Gap article. If the faucet is leaking from the spigot or elsewhere, you may need to replace the faucet.
Manifold
Inspect the unit for the source of the leak. If the leak is coming from under the auto shutoff cover, replace the Diaphragm. Otherwise, replace the Manifold.
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