Supplied By www.heating spares.co Tel. 0161 620 6677
7 181 465 347 (05.01)
2
Contents
Contents
Safety precautions
3
Symbols 3
1
Layout of Appliance
4
2
Operation 5
2.1
Initialisation 5
2.2
Standard display
5
2.3
Displaying service functions
5
2.4
Setting service functions
6
2.5
Resetting service functions to factory
settings 6
2.5.1 Resetting service functions 0.0 to 4.9 to
their factory settings (Reset 1):
6
2.5.2 Resetting service functions 0.0 to 9.9 to
the factory setting (Reset 2):
6
3
Boiler service functions
7
3.1
Summary 7
3.2
Explanation of service functions
10
4
Rectifying faults
15
4.1
Indication of faults
15
4.1.1 ... on the boiler
15
4.2
Summary 15
4.2.1 Appliance faults
15
4.2.2 Faults that are not displayed
16
4.3
Notes on using the fault code tables
17
4.4
Error codes on the display
18
4.5
Faults that are not displayed
36
4.5.1 Appliance faults
36
4.5.2 Programmer faults
43
5
Replacement of Parts
46
5.1
PCB control board and transformer
46
5.2
Fan Assembly
47
5.3
Primary Heat exchanger/Burner
47
5.4
Pump 48
5.5
Clean condensation trap
48
5.6
Motor of 3-way diverter valve (Fig. 14)
48
5.7
3-way diverter valve
49
5.8
Domestic Hot Water Heat Exchanger
49
5.9
Electrode assembly
49
6
Appendix 50
6.1
NTC values
50
6.1.1 Flue sensor
50
6.1.2 Outside temperature sensor
50
6.1.3 CH flow NTC sensor, DHW cylinder NTC
sensor 1 and hot water NTC sensor
50
6.2
Electrical wiring diagram
51
6.3
Approved corrosion inhibitors and
anti-freeze fluids for central heating water
52
6.4
List of Code plugs used with
this appliance
52
6.5
Summary of BDH Information Sheet on
Identifying Corrosion by CFCs
53
