Tap Water Related - Daikin altherma 3 M Service Manual

2.4.3 Tap water related

Symptom: High water pressure at tapping point
Possible failure
Safety valve water side
blocked.
Field installed pressure
reducing valve problem.
Symptom: Tap water has white colour
Possible failure
Extreme formation of
anode residue.
Symptom: Tap water has bad odour
Possible failure
Water circuit - bad odour
of supply water.
EBLA09~16DA + EDLA09~16DA
Daikin Altherma 3 M
ESIE20-06A – 2021.03
Root cause category: component – mechanical
Root cause
Component failure.
▪ Pressure reducing valve
(to reduce pressure of
the main water supply)
NOT installed,
▪ Pressure reducing valve
problem.
Root cause category: installation
Root cause
Water quality and
composition of the water
(chlorides, conductivity)
can lead to accelerated
reduction of the anode in
the tank and
aluminiumhydroxides will
be formed on the bottom
of the tank. (Remark: a
NOT well controlled water
softener can cause an
increased amount of
chlorides in the water.)
INFORMATION
ONLY for optional third party water tank with anode. See addendum book for
impressed current anode system for further troubleshooting.
Root cause category: installation
Root cause
Bad quality/contamination
of supply water.
Check
Check safety valve.
Check water system
pressure before and after
the water pressure
reducing valve.
Check
Visual check for
aluminiumhydroxide
residue is ONLY possible
with endoscope.
Check
Check the water quality
(odour/contamination) at
cold domestic water inlet.
2 Troubleshooting
|
Repair
If required, replace safety
valve.
Install or replace water
pressure reducing valve.
Repair
▪ Drain and flush the tank
to remove
aluminiumhydroxides,
▪ Check correct setting of
field supplied water
softener (if installed).
Repair
Assure that quality of
entering water is OK.
Service manual
the
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