STIEBEL ELTRON SHD 30 S - 13 Shutdown; 14 Troubleshooting; 15 Maintenance; Checking the Safety Valve

ENGLISH
www.stiebel-eltron.com SHD | 23
INSTALLATION
Shutdown
13. Shutdown
 Disconnect the appliance from the mains at the MCB/fuse in
the fuse box.
 Drain the appliance. See chapter "Maintenance/ Draining the
appliance".
14. Troubleshooting
Note
At temperatures below –15°C the high limit safety cut-out
may respond. The appliance may be subjected to these
temperatures during storage or transport.
Fault Cause Remedy
The water does not heat
up.
The high limit safety
cut-out has responded
because the controller is
faulty.
Remedy the cause of the
fault. Replace the tem-
perature controller.
The high limit safety
cut-out has responded
because the temperature
has fallen below -15°C.
Press the reset button
(see diagram).
Rapid heating does not
switch on.
Test the pushbutton and
lever.
The flanged immersion
heater is faulty.
Replace the flanged im-
mersion heater.
The selected outlet tem-
perature is not reached
during instantaneous
water cylinder mode
when the draw-off valve
is fully opened.
More water flows
through the appliance
than the heating element
can heat up.
Reduce the amount of
water at the DHW valve.
The safety valve drips
when heating is switched
off.
The valve seat is contam-
inated.
Clean the valve seat.
Reset button, high limit safety cut-out
2
1
D0000047875
1 High limit safety cut-out
2 Reset button
15. Maintenance
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.
Before any work on the appliance, disconnect all poles
of the appliance from the power supply.
For some maintenance work, the lower cap must be removed.
If you need to drain the appliance, observe chapter "Draining the
appliance".
Note the insertion depths of the temperature controller (see chap-
ter “Specification/ Dimensions and connections”).
15.1 Checking the safety valve
 Check the safety valve regularly.
15.2 Draining the appliance
WARNING Burns
Hot water may escape during the draining process.
If the appliance needs to be drained for maintenance or to protect
the whole installation when there is a risk of frost, proceed as
follows:
 Close the shut-off valve in the cold water inlet line.
 Open the hot water taps on all draw-off points.
1
D0000047875
1 Drain valve with hose connection G 3/4
 Screw a hose onto the drain valve.
 Open the drain valve.