Troubleshooting 10
0020134823_07 ecoTEC plus Installation and maintenance instructions
33
Condition
: Applies for 80 kW
–
Torque: 2 Nm
Condition
: Applies for 100 kW and 120 kW
–
Torque: 2.8 Nm
Warning.
Risk of poisoning and fire caused by es-
caping gas!
Gas can escape through leaks.
▶
Check the gas tightness at the gas con-
nection using leak detection spray.
12. Open the gas stopcock on the product.
Condition
: Applies for 80 kW
2
1
▶
Check that the sealing ring in the air intake pipe
(2)
is
positioned correctly in the seal seat.
▶
Reconnect the air intake pipe to the intake stub.
▶
Secure the air intake pipe with the clip
(1)
on the intake
stub.
13. Close the electronics box.
14. Install the front casing. (
→
Page 10)
15. Re-establish the connection to the power grid.
9.11
Draining the product
1.
Switch off the product using the on/off button.
2.
Close the service valves of the product.
3.
Start the check programme
P.06
.
4.
Open the drain valves.
5.
Check the water for clouding and additives and correct
this if required.
9.12
Completing inspection and maintenance
work
Once you have completed all maintenance work:
▶
Check the gas flow pressure. (
→
Page 23)
▶
Check the CO
₂
content and, if necessary, adjust it (air
index setting). (
→
Page 23)
10 Troubleshooting
You can find an overview of the fault codes in the appendix.
Overview of fault codes (
→
Page 43)
10.1
Contacting your service partner
If you contact your Vaillant service partner, if possible,
please mention
–
the fault code that is displayed (
F.xx
),
–
the product status (
S.xx
) that is displayed on the Live
Monitor (
→
Page 18).
10.2
Calling up service messages
If the
maintenance symbol appears in the display, there is
a service message.
The maintenance symbol appears if you have set a mainten-
ance interval, for example, and it has elapsed. The product is
not in fault mode.
▶
To obtain more information about the service message,
call up the
Live monitor
(
→
Page 18).
Condition
:
S.44-S.48
is displayed
The product is in Comfort protection mode. The product con-
tinues to run with restricted comfort after it has detected a
fault.
▶
To establish whether or not a component is defective,
read the fault memory (
→
Page 33).
Note
If no fault message is present, the product will
automatically switch back to normal operating
mode after a certain time.
10.3
Reading off the fault codes
If a fault develops in the product, the display shows a fault
code
F.xx
.
Fault codes have priority over all other displays.
If multiple faults occur at the same time, the display shows
the corresponding fault codes for two seconds each in se-
quence.
▶
Rectify the fault.
▶
To restart the product, press the fault clearance key (
Operating instructions).
▶
If you are unable to remedy the fault and the fault recurs
despite several fault clearance attempts, contact Vaillant
Service.
10.4
Querying the fault memory
Menu
→
Installer level Fault list
The product has a fault memory. You can use this to query
the last ten faults that occurred in chronological order.
The display shows:
–
The number of faults that have occurred
–
The fault currently selected with fault number
F.xx
–
A plain text display explaining the fault.
▶
You can display the last ten faults that have occurred by
pressing
or
.
Summary of Contents for ecoTEC plus VU GB 5-5 Series
Page 59: ......
