oventrop Regtronic RH HT, Инструкция по установке и эксплуатации для специализированного инсталлятора, Страница: 50 / 56

50
Installation
Commissioning
Settings
Data comm
unication
Tr
oubleshooting
en
Is the pump current enabled by
the controller?
Display illuminated?
If not, press button
➄
. Display
illuminated again?
Does the pump start up in manual
operation?
The heating circuit pump does not work, although this is indicated on the
display.
yes no
yes
There is no current; check fuses /
replace them and check power
supply.
The adjusted temperature differ-
ence for starting the pump is too
high; choose a value which makes
more sense.
no
yes no
Stores cool down at night.
Sufficient store insulation?
yes no
Increase insulation.
Insulation close enough to the store?
yes no
Replace insulation or increase it.
Are the store connections insulated?
yes no
Insulate the connections.
Warm water outflow upwards?
no yes
Change connection and let the
water flow sidewards or through
a siphon (downwards); less store
losses now?
no yes
o.k.
Controller might be defective -
replace it.
Is the pump stuck?
Turn the pump shaft using a
screwdriver; now passable?
Pump is defective - replace it.
yes
no
Does the DHW circulation run
for a very long time?
no yes
Use the circulation pump with
timer and switch-off thermostat
(energy-efficient circulation).
Circulation pump and blocking
valve should be switched off for 1
night; less store losses?
yes no
Check whether the pumps of the
after-heating circuit run at night;
check whether the non-return valve
is defective; problem solved?
no
Check the non-return valve in
warm water circulation - o.k.
yes no
The gravitation circulation in the
circulation line is too strong; insert a
stronger valve in the non-return valve
or an electrical 2-port valve behind
the circulation pump; the 2-port valve
is open when the pump is activated,
otherwise it is closed; connect pump
and 2-port valve electrically in parallel;
activate the circulation again. Deacti-
vate pump speed control!
Clean or replace it.
Further pumps which are con-
nected to the store must also be
checked.