Supplied By www.heating spares.co Tel. 0161 620 6677
7 181 465 347 (05.01)
18
Rectifying faults
Error A1
4.4
Error codes on the display
A1
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 Installa-
tion Instructions).
B
Turn ON the appliance.
A1?
↓
2.
no:
↓
2.
2.
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 chapter 5.4).
B
Fill system, bleed and re-pressurise (see Installa-
tion Instructions).
B
Reconnect the boiler electrical connection.
B
Turn ON the appliance.
↓
3.
no:
↓
3.
3.
Activate venting sequence.
yes:
B
Activate menu option Show service parame-
ters.
B
Select 7.3 Air purge mode select setting on,
autom. deactivat. and confirm.
B
Vent appliance.
B
Vent radiators.
