Faults Not Indicated On The Display - Buderus Logamatic SC40 Operating Instructions Manual

Faults
4
4.2

Faults not indicated on the display

Type of fault
Effect
Pump not running even though conditions for switching on are met.
The solar storage cylinder is
not being supplied by the
solar thermal system.
The system animation on the display is running and the pump is "humming".
The solar storage cylinder is
not being supplied by the
solar thermal system.
Temperature sensor is displaying an incorrect figure.
Pump is being activated/deac-
tivated too early / too late.
Domestic hot water is too hot.
Risk of scalding
Domestic hot water too cold (or hot water flow rate too slow).
Tab. 4 Possible faults not indicated on the display
12
Possible causes
No power supply; fuse or power
cable faulty.
Pump switched off in "manual
mode".
The temperature at the bottom of
the cylinder is close to, or above the
set maximum cylinder temperature.
The collector temperature is close
to, or above the set maximum col-
lector temperature.
There is no electrical power lead to
the pump or it is not connected.
Cooling function active.
The controller checks which cylin-
der can be charged (only in systems
with two cylinders)
Pump is faulty.
The pump is stalled.
Temperature sensor not correctly
installed. Incorrect temperature sen-
sor installed.
Cylinder maximum temperature and
hot water mixer are set too high.
Domestic hot water thermostat on
heating appliance, on heating con-
troller or on mixing valve is set too
low.
Logamatic SC40 - Specifications subject to change without notice.
Remedy
Contact a qualified electrician.
Contact your heating engineer.
When the temperature drops 3 K (°C)
below the maximum cylinder tempera-
ture, the pump switches on.
When the temperature drops 5 K (°C)
below the maximum collector tempera-
ture, the pump switches on.
Contact your heating engineer.
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Contact your heating engineer.
Contact your heating engineer.
Contact your heating engineer.
Contact your heating engineer.
Contact your heating engineer.