Steca TF B001, Инструкция по установке и эксплуатации

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19
745.089 | 11.30
EN
8.1 General faults
Display Possible cause Solution
Controller not functioning at all
Display empty/dark
Controller power supply is inter-
rupted.
• Check the controller power
cable.
• Check the fuse for the
power supply.
Pump is not running but drinking water is being drawn off.
The pump symbol rotates.
Pump power supply is interrupted. Check the pump power cable.
Pump has seized up.
Get the pump working again.
The pump symbol does not
rotate.
Hot water temperature has
been reached.
No fault.
• The pump symbol does not
rotate.
• Display is red.
• flashes
Manual
mode is switched on,
output
R1
is set to
0
(off).
Switch to
automatic
mode.
• The pump symbol does not
rotate.
• The display flashes red.
Short circuit or interruption of
the temperature sensor.
• On the controller, request the
current values from the con-
nected temperature sensors.
• Check the sensors and
cables.
Pump is running but drinking water is not being drawn off.
The pump symbol rotates.
Pump is running due to block-
age protection.
No fault.
Grundfos Direct Sensors TM
shows a flow but no drinking
water is being drawn off.
Grundfos Direct Sensors TM is
not grounded correctly.
Ground Grundfos Direct
Sensors
TM
: Connect a cable
between the terminal (see

on Page 8) and the metal
pipe in the direct vicinity of
Grundfos Direct Sensors TM .
• The pump symbol rotates.
• Display is red.
• is displayed.
Manual
mode is switched on,
output
R1
is set to
1
(on).
Switch to
automatic
mode.
No heat transport in heat exchanger, pump is running, drinking water is being drawn off.
The pump symbol rotates.
Air in system. Check the primary circuit for air.
The isolating valve is closed. Check/open the isolating valve.
Heat exchanger is dirty or calci-
fied.
Flush/clean the heat exchanger
in accordance with the manu-
facturer's instructions.
Pump shows cycle behaviour.
– Air in system. Check the primary circuit for air.
The isolating valve is closed. Check/open the isolating valve.
Heat exchanger is dirty or calci-
fied.
Flush/clean the heat exchanger
in accordance with the manu-
facturer's instructions.