Troubleshooting By The User; Troubleshooting By The Contractor - AEG DDLT PinControl 18 Gebrauchs- Und Montageanweisung

For users and contractors
6. Troubleshooting
Fault
The heating system inside the
instantaneous water heater will not
start in spite of the tap being fully
open.
Table 5
7. Troubleshooting
Fault
Stage II in the device will not start.
Throughput volume controller ( A
7, output switch unit) will not start
in spite of tap being fully opened.
No hot water in spite of audible
sound of the differential pressure
switch starting.
Table 6
32
by the user
Cause
No voltage.
The start-up volume required to start the
heater has not been reached.
Contamination or scaling of perlators in
water taps or shower heads.
by the contractor
Cause
Pressure in the cold water line too low.
Contamination
The start-up volume required to start the
heater has not been reached.
Safety pressure limiter (AP 3) has switched
the device off for safety reasons.
No voltage.
Heating system faulty.
Remedy
User / Contractor:
Check the fuses in your fuse board.
User / contractor:
Clean and / or descale.
Remedy
Descale and if required replace shower
head/perlator.
Clean sieve ( A 22).
Clean sieve ( A 22).
Remove cause of fault
(e.g. faulty pressure washer).
Open downstream tap for 1 minute. This
depressurises and cools down the heating
system, protecting it against overheating.
Press the pushbutton on the safety
pressure limiter (push A 8).
Check fuse/MCB (fuse box).
Test the heating system resistor and
replace if required.