C Technical Data - Vaillant electronicVED plus Operating Instructions & Installation Instructions

Appendix
Symptom
The water does not
become hot enough

C Technical data

Technical data – General
Temperature setting
Heating system heat
generator
Nominal capacity
Domestic hot and cold
water connection,
boiler side
Unit dimensions,
width
Unit dimensions,
height
Unit dimensions,
depth
Weight when filled,
approx.
IP rating
24
Possible cause
The target temperat-
ure or volume flow are
not set correctly
The measured value
on the heating block
(connection 1 against
connection 4) is
greater than 200 Ω
The relay does not
click on the electronics
when there is more
than 4 l/min
The engine does not
start up after the
mains is switched on.
Water volume is not
reduced if the target
temperature is not
reached.
Other cause
VED E 18/8 P VED E 21/8 P
INT INT
Between Between
20 and 55 °C, 20 and 55 °C,
to any value, to any value,
electronically electronically
regulated regulated
Bare wire heat- Bare wire heat-
ing coil ing coil
0.4 l 0.4 l
G 1⁄2" G 1⁄2"
240 mm 240 mm
481 mm 481 mm
100 mm 100 mm
4.4 kg 4.4 kg
IP 25 IP 25
Installation instructions electronicVED plus 0020288449_01
Measure
▶
Set the target temperature to approx. 40 °C
and the volume flow to approx. 5 l/min.
▶
Replace the heating block.
▶
Replace the impeller.
▶
Replace the motorised valve.
▶
Replace the electronics.
VED E 24/8 P
INT
Between
20 and 55 °C,
to any value,
electronically
regulated
Bare wire heat-
ing coil
0.4 l
G 1⁄2"
240 mm
481 mm
100 mm
4.4 kg
IP 25
VED E 27/8 P
INT
Between
20 and 55 °C,
to any value,
electronically
regulated
Bare wire heat-
ing coil
0.4 l
G 1⁄2"
240 mm
481 mm
100 mm
4.4 kg
IP 25