Shutting Down The System; 13. Troubleshooting - STIEBEL ELTRON DEM 3 Manual

INSTALLATIoN

Shutting down the system

Limiting the flow rate
Factory setting: Maximum flow rate
f Using the adjusting screw, set the maximum required flow
rate:
- Lowest flow rate = wind the screw in as far as it will go.
- Maximum flow rate = wind the screw out as far as it will go.
f Fit the appliance cover.
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12. Shutting down the system
f Isolate the appliance from the mains power supply by means
of the fuse/MCB in the distribution board or by pulling the
power cable plug from the socket.
f Drain the appliance (see chapter "Installation / Maintenance").

13. Troubleshooting

Problem Cause
The appliance will not The aerator in the tap is
start despite the DHW scaled up or dirty.
valve being fully open.
The flow rate is set too
low.
The strainer in the cold
water line is blocked.
The heating system is
faulty.
The safety pressure limit-
er has responded.
The preferred tempera- The appliance has
ture is not being reached. reached its output limit.
The yellow indicator
flashes.
Remedy
Clean and/or descale the
aerator or replace the
special aerator.
Increase the flow rate.
Clean the strainer after
shutting off the cold
water supply line.
Check the resistance of
the heating system and
replace the appliance if
required.
Remedy the cause of
the fault. Isolate the ap-
pliance from the power
supply and depressurise
the water line. Activate
the safety pressure
limiter.
Reduce the flow rate.
DEM | 45