Desmond de Bod
Jan 22 min read
Common Faults in Domestic RO
If your domestic 5-stage RO pump does not switch off, it’s a very common fault and almost always one of a few components. I’ll go step-by-step, starting with the most likely causes and what you can safely check at home. 🔴 MOST COMMON CAUSES (90% of cases) 1️⃣ Faulty Auto Shut-Off Valve (ASO) This is the #1 cause. What it does : The ASO valve stops water to the membrane when the tank is full. Symptoms of failure: Pump keeps running Drain water keeps flowing Tank is already
