Troubleshooting; Maintenance; Checking The Safety Valve; Draining The Appliance - Stiebel Eltron SHO AC 600 7,5 Utilisation Et Installation

INSTALLATION

Troubleshooting

14. Troubleshooting
Note
The high limit safety cut-out can respond at temperatures
below –15 °C. The appliance may be subjected to these
temperatures during storage or transport.
Fault Cause
The water does not The high limit safety
heat up. cut-out has responded
because the controller is
faulty.
The high limit safety cut-
out has responded be-
cause the temperature has
fallen below -15 °C.
The booster heater in-
stalled by the heating con-
tractor does not switch on.
A heating element is
faulty.
The safety valve drips The valve seat is contam-
when heating is inated.
switched off.
1
1 High limit safety cut-out reset button
24 | SHO AC

15. Maintenance

Remedy
Replace the thermostat
and press the high limit
safety cut-out reset but-
If you need to drain the appliance, observe chapter "Draining the
ton.
appliance".
Press the reset button.

15.1 Checking the safety valve

f Regularly vent the safety valve on the safety assembly until a
Check the contactor and
replace if required.
Replace the heating ele-

15.2 Draining the appliance

ment.
Clean the valve seat.
If is necessary to drain the cylinder for maintenance or to protect
the whole installation from frost, proceed as follows:
f Close the shut-off valve in the cold water feed line.
f Open the hot water taps on all draw-off points.
f Drain the appliance via the safety assembly.

15.3 Replacing the signal anode

f Replace the signal anode if it becomes depleted.

15.4 Cleaning and descaling the appliance

f Never use descaling pumps.
f Only descale the flange after disassembly and never treat the
For the torque of the flange screws, see chapter "Specification /
Dimensions and connections".
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.
WARNING Electrocution
Before any work on the appliance, disconnect all poles
of the appliance from the power supply.
f
full water jet is discharged.
WARNING Burns
Hot water may escape during the draining process.
f
f
f
f
f
f
cylinder surface and protective anode with descaling agents.
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