B Top Up System; B Vent Appliance; B Press The Reset Button For 3 Seconds And Release It; After Releasing The Appliance Re-Starts - Worcester CDi Combi N.G Service Booklet

E9
and button reset and fault indicator LED are flashing.
Safety temperature circuit has tripped.
Check
1. Type of CH system:
Is the appliance installed in a fully
pumped sealed system?
2. Open vented CH system:
Is there enough water in the feed
and expansion tank?
Fully pumped sealed system:
3.
Is the heating pressure between 1
and 2 bar (sealed systems)?
Is the pump seized?
4.
Lead disconnected from flue safety
5.
temperature limiter and/or CH flow
safety temperature limiter?
Tab. 24 E9 Error codes
8 716 115 748 (2009/09)
Supplied By www.heating spares.co Tel. 0161 620 6677
Action
go to 3
yes:
go to 2
no:
go to 4
yes:
B Top up system.
no:
B Vent appliance.
B Press the reset button for 3 seconds and release it.
After releasing the appliance re-starts.
E9? go to 4
go to 4
yes:
no:

B Top up system.

B Vent appliance.

B Press the reset button for 3 seconds and release it.

After releasing the appliance re-starts.

E9? go to 4
B Free/release the pump.
yes:
If pump won't start:
B Switch OFF the appliance.
B Disconnect the boiler power connection.
B Drain appliance.
B Change the pump (see Installation Instructions).
B Fill system, vent and re-pressurise (see installation
instructions).
B Reconnect the appliance power connection.
B Switch ON the appliance.
B Press the reset button for 3 seconds and release it.
After releasing the appliance re-starts.
E9? go to 5
go to 5
no:
B Switch OFF the appliance.
yes:
B Reconnect lead.
B Switch ON the appliance.
B Press the reset button for 3 seconds and release it.
After releasing the appliance re-starts.
E9? go to 4
go to 4
no:
RECTIFYING FAULTS
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