ESIE15-08B
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Part 2. Troubleshooting
3. Symptom based troubleshooting
19/07/16
Page 59
Daikin Altherma Monobloc CA
3.10. Tapping water related
3.10.1. High water pressure at tapping point
3.10.2. Tapping water has white colour
3.10.3. Bad odour from tapping water
Possible failures
Root cause
Check
Corrective action
Root cause category: component - mechanical
Safety valve water side
blocked.
Component failure.
Check safety valve.
If required, replace safety
valve.
Field installed pressure reduc-
ing valve problem.
• Pressure
reducing
valve
(to reduce pressure of the
main water supply) not
installed.
• Pressure
reducing
valve
problem.
Check water system pressure
before and after the water
pressure reducing valve.
Install or replace water pres-
sure reducing valve.
Possible failures
Root cause
Check
Corrective action
Root cause category: installation
Extreme formation of anode
residue.
Water quality and composition
of the water (chlorides, con-
ductivity) can lead to acceler-
ated reduction of the anode in
the tank and aluminium
hydroxides 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.)
Visual check for aluminium
hydroxide residue is only pos-
sible with endoscope.
•
Drain and flush the tank to
remove the aluminiumhy-
droxides.
•
Check correct setting of
field supplied water
softener (in case installed).
Possible failures
Root cause
Check
Corrective action
Root cause category: installation
Water circuit - bad odour of
supply water.
Bad quality/contamination of
supply water.
Check the water quality
(odour/contamination) at cold
domestic water inlet.
Assure that quality of entering
water is OK.