139
Draining the system separation circuit on the fuel cell module
A
Fig. 88
1.
If not yet set: Set maintenance mode. Wait until the
fuel cell module is shut down. The cooling process
is completed when the following display appears
on the programming unit of the fuel cell module:
30
P0
ITEM
STATE
Note
The cooling process on the fuel cell module lasts
up to 90 min.
!
Please note
If this waiting time is not observed,
there is a risk of scalding and damage to the
appliance.
2.
Place a sufficiently large, flat container under the
drain opening
A
.
3.
Unscrew filter from drain opening
A
. Ensure ade-
quate ventilation in the system separation circuit.
Draining the system on the DHW side
B
A
Fig. 89
1.
Shut off the cold water connection.
2.
To vent, open a draw-off point in the domestic sys-
tem.
3.
Attach a hose to connection
A
and connect to a
drain.
4.
Open drain valve
B
.
Troubleshooting
Repairs
(cont.)
5853335
Diagnosis
