ESIE15-08B | Part 2. Troubleshooting 3. Symptom based troubleshooting19/07/16 Page 59Daikin Altherma Monobloc CA3.10. Tapping water related3.10.1. High water pressure at tapping point3.10.2. Tapping water has white colour3.10.3. Bad odour from tapping waterPossible failures Root cause Check Corrective actionRoot cause category: component - mechanicalSafety valve water sideblocked.Component failure. Check safety valve. If required, replace safetyvalve.Field installed pressure reduc-ing valve problem.• Pressure reducing valve(to reduce pressure of themain water supply) notinstalled.• Pressure reducing valveproblem.Check water system pressurebefore and after the waterpressure reducing valve.Install or replace water pres-sure reducing valve.Possible failures Root cause Check Corrective actionRoot cause category: installationExtreme formation of anoderesidue.Water quality and compositionof the water (chlorides, con-ductivity) can lead to acceler-ated reduction of the anode inthe tank and aluminiumhydroxides will be formed onthe bottom of the tank.(Remark: a not well controlledwater softener can cause anincreased amount of chloridesin the water.)Visual check for aluminiumhydroxide residue is only pos-sible with endoscope.• Drain and flush the tank toremove the aluminiumhy-droxides.• Check correct setting offield supplied watersoftener (in case installed).Possible failures Root cause Check Corrective actionRoot cause category: installationWater circuit - bad odour ofsupply water.Bad quality/contamination ofsupply water.Check the water quality(odour/contamination) at colddomestic water inlet.Assure that quality of enteringwater is OK.
