Troubleshooting - Wagner & Co RATIOfresh 250 Technical Information Installation Instructions

8. Troubleshooting

Table 15 Malfunction
Hot water flow volume is
insufficient.
No hot water.
Water does not get hot.
Hot water temperature
is too low.
Hot water temperature
is too high.
EN-RATIOfresh-250-400_TI-MA-0809-11214900
Cause
Shut-off valve in cold water supply
partially closed.
Clogged cold water supply filter.
Lime buildup on heat exchanger.
Shut-off valve in cold or hot water
network closed.
Power outage or potable water station
without power.
Fuses defective.
Primary circuit pump defective.
Air within the primary circuit prevents
sufficient flow through the heat
exchanger.
Flow through primary circuit
insufficient.
Single-jet meter does not detect when
water is withdrawn.
Incorrectly set nominal temperature.
Aux. heating temperature set too low.
Incorrectly set power output level of
the primary circuit pump.
Controller not yet adapted.
Air within the primary circuit prevents
sufficient flow through the heat
exchanger.
Flow through primary circuit
insufficient.
Incorrectly set nominal temperature.
Primary circuit pump mode set
incorrectly.
Disinfection operating mode set
incorrectly ("On").
Incorrectly set disinfection start time.
Controller not yet adapted.
Incorrectly set power output level of
the primary circuit pump.
Storage tank temperature temporarily
increased significantly due to solar
charging.
Gravity circulation in primary circuit
(detectable only with brief tapping
events).
Primary circuit temperature sensor
attached at incorrect position.
Remedy
Check all shut-off valves and spigots and open completely.
Shut off the cold water supply, remove filter, clean filter.
Check the heat exchanger for lime buildup and decalcify if
necessary (see chapter 7).
Check all shut-off valves and spigots and open completely.
Check whether the display of the potable water station is
illuminated.
Plug the power plug of the potable water station into the wall
socket.
Check fuses in controller of potable water station and replace if
necessary.
Check the function of the primary circuit pump (manual
operation).
Bleed the primary circuit (see chapter 5.2).
Check the entire primary circuit: Shut-off elements, power
supply, pump and controller settings.
Check the function of the single-jet meter (e.g. with acoustic
test of the pulse output using a multimeter).
Change the nominal hot water temperature.
Compare the set value with the recommendations in table 14
and correct as needed.
Compare the set value with the recommendations in table 14
and correct as needed.
Carry out a controlled tapping (see chapter 5.6).
Bleed the primary circuit (see chapter 5.2).
Check the entire primary circuit. Shut-off elements, power
supply, pump and controller settings.
Change the nominal hot water temperature.
Set the mode of the primary circuit pump to "Auto".
Set the operating mode of the disinfection to "Auto".
Change the disinfection start time. Select a time outside of the
typical tapping times (e.g. at night).
Carry out a controlled tapping (see chapter 5.6).
Compare the set value with the recommendations in table 14
and correct as needed.
The potable water station automatically adjusts this next time
water is withdrawn.
Check the setting of the gravity brake and possibly of the
hydraulics (e.g. in case of multiuse of the buffer cylinder
connections of the primary circuit).
Check the position of the storage cylinder temperature sensor
and correct if necessary (see chapter 3.6).
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