Supplied By www.heating spares.co Tel. 0161 620 6677
RECTIFYING FAULTS
8 716 115 748 (2009/09)
29
7.4
ERROR CODES ON THE DISPLAY
A1
and fault indicator LED are flashing
Controlled characteristic pump has run dry
Check
Action
1.
System pressure below 1.2 bar
yes:
B
Power OFF the appliance
B
Check appliance and system for water leaks and
repair as necessary.
B
Fill system, bleed and re-pressurise
(see Installation Instructions).
B
Turn ON appliance
A1? go to 2
no:
go to 2
2.
Pump seized or sticking?
yes:
Free/release pump
no:
go to 3
3.
Audible bearing damage on pump
yes:
B
Power OFF the appliance
B
Disconnect the boiler electrical connection.
B
Drain appliance.
B
Change the pump (see Installation Instructions).
B
Fill system, bleed and repressurise
(see Installation Instructions).
B
Reconnect the boiler electrical connection.
B
Turn ON the appliance.
no:
go to 4
4.
Activate venting sequence
yes.
B
Select in the first service level, service function 2.C
(Air Purge mode - see page 25).
B
Select the value 1 and store.
B
Exit the service function.
B
The boiler vents for eight minutes.
B
Vent radiators manually.
Tab. 13 A1 Error codes
