Troubleshooting - STIEBEL ELTRON DEL 18 Plus Bedienung Und Installation

oPErATIoN

Troubleshooting

6. Troubleshooting
Problem
The appliance will not start despite the
DHW valve being fully open.
When hot water is being drawn off, cold
water flows for a short period.
The required temperature cannot be set. The high limit safety cut-out and/or internal
The flow rate is too low.
No settings can be made on the program-
ming unit.
Note
After a power failure
The programming unit displays and selected settings are
retained following a power failure.
If you cannot remedy the fault, contact your qualified contractor.
To facilitate and speed up your request, provide the number from
the type plate (000000-0000-000000).
www.stiebel-eltron.com
Cause
There is no power.
The aerator in the tap or the shower head is
scaled up or soiled.
The water supply has been interrupted.
The air detector detects air in the water. It
switches off the heating output briefly.
anti-scalding protection are enabled.
ECO function is enabled.
The operating lock is enabled.
remedy
Check the fuses/MCBs in your distribution board.
Clean and/or descale the aerator or shower head.
Vent the appliance and the cold water inlet line.
The appliance restarts automatically after 1 minute.
Disable temperature limiting. The internal anti-scalding protection can be
adjusted only by the qualified contractor.
Select a different ECO level or disable the ECO function.
Press and hold the ECO button for more than 10 seconds to disable the
operating lock.
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