Troubleshooting - oventrop Unibox RTL Betriebsanleitung

Troubleshooting

9. Troubleshooting
MALFUNCTION
The surface temperature
regulation circuit does not get
warm.
The surface temperature regu-
lation is warmer than set.
Hammering noises are per-
ceivable at the "Unibox RTL".
34
CAUSE
The "Unibox RTL" is installed
in the supply.
Illust. 16: "Unibox RTL" in-
stalled in the supply
Problems with the heating
system/heat generator.
The Duo connection piece for
two heating circuit is being
used (s Illust. 20 on page
37).
If you can hardly actuate the
stem or not at all, there are
impurities at the valve.
Supply and return were
reversed. Wrong flow against
the "Unibox RTL" (see 12.2 on
page 36).
"Unibox RTL"
REMEDY
Convert the "Unibox RTL"
from a return temperature
limitation to an individual room
temperature control ("Unibox
T") (see 12.1 on page 35).
Increase the pump output (if
possible).
Increase the fluid temperature.
Check the resistances of the
heating circuits. All heating
circuits must have the same
resistance.
Clean the valve as follows:
1. Remove the cover and the
sensor unit.
2. Actuate the stem.
Replace the valve insert and
clean the valve body with
the help of the special tool
"Demo-Bloc".
Replace the valve insert of the
"Unibox RTL" with the special
valve insert for reversed sup-
ply and return pipe, item no.
1026970.
102273580-V02.10.2019