82
FAULT FINDING
6 720 644 593 (2010/04)
Cylinder temperature limit and hot water mixer are set too high.
Pump is being activated/
deactivated too early / too
late.
Temperature sensor incorrectly
fitted.
Incorrect temperature sensor
fitted.
Check position, installation and
type of sensor; add heat
insulation if necessary.
Domestic hot water is too hot.
risk of scalding
Cylinder temperature limit and
hot water blending valve are
set too high.
Set the cylinder temperature limit
and hot water blending valve to a
lower setting.
Domestic hot water too cold (or hot water flow rate too slow).
Domestic hot water
temperature is set too low on
boiler control, on heating
programmer or on hot water
blending valve.
Set temperature according to the
appropriate operating
instructions (max. 60 °C).
Type of fault
Effect
Possible causes
Remedy
Tab. 14
Possible faults not indicated on the display
Содержание Worcester TDS 300
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