Troubleshooting; Troubleshooting Table; Maintenance - oventrop 1344555 Operating Instructions Manual

Potable water circulation module
8.

Troubleshooting

8.1

Troubleshooting table

MALFUNC-
CAUSE
TION
The power
supply is
interrupted.
The high-
The high-
efficiency
efficiency
pump is not
pump was
running.
switched off
by the digital
time switch.
The pump
runs dry.
The high-
efficiency
pump makes
There is air
noises.
in the high-
efficiency
pump.
The check
The fluid is not
valve is
heated.
defective.
134455580-V02.02.2019
REMEDY
Check the power
supply.
Check the settings
of the digital time
switch.
Check the isolation
devices. The
isolation devices
must be open.
Bleed the circulation
pipe (see 7.2 on
page 22).
Replace the check
valve (see 9 on page
23).
9.

Maintenance

Illustr. 6: Check valve in the potable water circulation
module
(1) Check valve
According to DIN EN 806, you have to check the
correct functioning of the check valve (1) of the
potable water circulation module every year:
1. Close the ball valves of the hot water outlet and of
the potable water circulation module.
2. Open the venting valve of the potable water
circulation module to depressurise the circulation
pipe.
If potable water escapes from the venting valve
continuously, the check valve is defective and must
be replaced.
Troubleshooting
1
23