HSF EcoAdvance Instant II, Installation & User Manual

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16
Troubleshoot (technician)
Complaint LED indication light Cause Solution
Coupling nut is loose Fasten coupling nut
Gasket is missing
Place gasket
O ring is missing Replace temperature sensor
O ring is damaged Replace temperature sensor
Other components or pipes
are showing leakage Component or pipe is damaged Replace component or pipe
Check/open main water supply valve
Check flow sensor for contamination or obstruction
Check heat exchanger for contamination or obstruction
Supply and return valves are closed Open supply and return valves
Heat exchanger obstipated Check heat exchanger for contamination or obstruction
LED does not light up Unit is not connected to power supply Connect the unit to the power supply
LED does not light up Power cables not properly connect to electronic
regulator Connect the power cables to the electronic regulator
Green flashing LED Tapping threshold is to low, minimal 1 L/min. has
not been reached Increase water draw off to at least 2 L/min. by opening
the valve at the tapping point further.
Green flashing LED Flow sensor is not installed correctly or defect Check mounting direction of flow sensor, replace cable
or replace flow sensor
Blue flashing LED Differential pressure or supply temperature of the
district heating system is too low Check supply temperature and differential pressure of
the district heating system (clean DH filters)
Check and connect all cable connections
Close all faucets and valves in the residence. Green
flashing LED should return after approximately 1 min.
Cables are in between unit and casing Keep cables free of any obstructions
Metal flap closing the heat exchanger in position is
not closed Close metal flap closing the heat exchangers into
position
Electronics are not properly placed Check mounting of electronics
Rattling sound Red or green flashing LED Flow sensor not installed correctly Install flow sensor properly
Other errors Contact your supplier
No tapping water
Leakage
postscript: Close all valves and close the main water supply valve.
Coupling nut shows leakage
Temperature sensor shows
leakage
Casing will not close properly
Casing does not close
properly
Other faults
postscript: It is normal for the unit to generate a light noise during tapping. The regulator valve can also make a light humming sound
No tapping water No water pressure
Domestic hot water not at the right temperature
Domestic water does not
warm up
Red flashing LED Possible defect in electronics, electronic cables,
temperature sensors or regulator valve