Troubleshooting; Special Accessories; Environment And Recycling; Guarantee - STIEBEL ELTRON DHB-E 18 Si Gebrauchs- Und Montageanweisung

7. Troubleshooting

Fault / Diagnostic "traffic light" display*
Flow rate too low
Pre set temperature is not reached
Heating does not switch on/no hot water
No hot water
No "traffic light" display
No hot water and flow rate > 3 l/min
"traffic light"
display: green flashing or constant
illumination
No hot water and flow rate > 3 l/min
"traffic light"
display: constant yellow indicationt
green flashing
No hot water
"traffic light"
display: red indication
green flashing
Table 6
* LED diagnostic
"traffic light"

8. Special accessories

Two-handle pressure valves
• Kitchen valve WKMD
Part no. 07 09 17
• Bath valve WBMD
Part no. 07 09 18
Installation accessories
• Under-worktop set – unfinished
walls
Best.-Nr. 07 05 65
Connections for finished walls, G 3/8", top.
• Set 2x water plugs G ½
Part no. 07 43 26
Required with third party pressure valves
( P a).
Note: Not required for Stiebel Eltron valves
WKMD and WBMD.
• Installation set – finished walls
Part no. 07 40 19 ( Q a)
consisting of:
– 2 x water plugs G½".
– 2 x union nuts ½" with insert for solde-
red fitting Ø 12 mm.
• Universal mounting frame
Part no. 22 02 91
consisting of:
– mounting frame with
– electrical wiring.
This set creates a gap of 30 mm bet-
ween the equipment back wall and the
installation wall. This enables the electrical
by the contractor
Cause
Shower head/percolators scaled up
Contamination
One phase down
The air sensor senses the presence of air in the
water and briefly switches the heater off
MCB tripped/fuse blown
Safety pressure limiter AP 3 has tripped
Faulty PCB
Faulty PCB
High limit safety cut-out (STB) tripped or cable
break
Heating system faulty
Faulty PCB
Cold water supply temperature > 35 °C
Flow rate > 25 l/min
Cold water sensor faultyt
red
yellow
green
connection to be routed over unfinished
walls at any point behind the equipment. It
increases the equipment depth by 30 mm
and reduces the protection level to IP 24
(splash-proof).
• Offset installation set – unfinished
walls
Part no. 22 02 90
consisting of:
– universal mounting frame (see part no.
22 02 91 for specification).
– pipe bends for installation at existing gas
water-heater connections (cold water
left and hot water right).
• Gas water-heater replacement set
Part no. 22 05 10
consisting of:
– universal mounting frame (see part
no. 22 02 91 for specification).
– pipe bends for installation at existing
gas water-heater connections (cold
water left and hot water right).
• Installation set - DHB remplace
Part no. 15 98 76
consisting of:
– 2x plug-in water coupling.
Water connections in the instantaneous
water heater, suitable for existing DHB
plug-in water connections.
Remedy
Descale and replace if necessary.
Clean strainer ( G 19).
Check fuse/MCB (fuse box).
Equipment starts again after a few seconds.
Check fuse/MCB (fuse box).
Remove the cause of fault (e.g. faulty pressure
washer). Rinse heating-system of unit, in order
to avoid over-heating. Press button on safety
pressure limiter ( A 12), but only after isola-
ting the equipment from the electrical supply.
Test the PCB ( A 9), replace if necessary.
Test the PCB ( A 9), replace if necessary.
Check the high limit safety cut-out and replace if
necessary ( A 17).
Test the heating system resistance ( A 14) and
replace if necessary.
Test the PCB ( A 9), replace if necessary.
Reduce the temperature of the cold water sup-
ply to the equipment.
Reduce the flow rate to the equipment.
Test the PCB ( A 9), replace if necessary.
• Load circuit breaker LR 1-A
Part no. 00 17 86
Priority control of the DHB-E ... Si
electronic for imultaneous operation of e.g.
electric storage heaters.
For connection of the LR 11-A, see N .
9. Environment and
recycling
Recycling of obselete appliances
Appliances with this label must not be
disposed off with the general waste.
They must be collected separately and
disposed off according to local regulations.

10. Guarantee

For guarantees please refer to the pespec-
tive terms and conditions of supply for your
country.
The installation, electrical connection
and first operation of this appliance
should be carried out by a qualified installer.
The company does not accept liability for
failure of any goods supplied which accor-
dance with the manufacturer's instructions.
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