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Centora Green

C&M 24, 30, Centora Green Maintenance And Service Manual

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Page 1
MAINTENANCE AND
SERVICE GUIDE
Fanned Flue Condensing Central
Heating System Boiler 24 and 30
Dimensions
Flue types: C 13: C 33: C 53:
108 108
JLN
I
88
JLN
2
32
235
32
380
212
3
60
50
67
850
737
Safety valve center line
All dimensions in mm
Outer case dimensions :
-
Width : 440 (minimum space required 450)
-
Height : 850
- Depth : 380 (24kW) - 405 (30 kW)
212
360
67
737
850
50
I Safety valve outlet J Heating flow L Gas supply N Heating return
Technical Data
Heat gross input C/H maxi ............................ 9.2-27.8 kW 10.4-31.6 kW
Heat output C/H 50°/30° maxi....................... 9-26 kW 10-30kW
Heat output C/H 80°/60° maxi....................... 8-24 kW 9-28 kW
C/H operating temperature............................
80
°C max 80°C max
C/H circuit pressures Min operating ..............
0.7 bar
0.7 bar
C/H circuit pressures Max operating ............. 2.5 bar 2.5 barr
Safety discharge
...........................................
3 bar 3 bar
Expansion vessel - Pre-charge pressure ...... 0,7 bar 0.7 bar
Net capacity at 3 bar in liter........................... 5.44 5,44
Supply ........................................................... 230 v 230 v
Consumption ................................................. 150 w 150 w
Protection ...................................................... IP 44 IP 44
Fuse F1/F2/F3/F4
......................................... 2 A/1.25 A/0.315 A/0.250 A
External controls
...........................................
24 v
24 v
Natural gas G20
Gas rate C/H max ................... 2.64 m3/h 3.01 m3/h
Gas rate C/H mini.................... 0.87 m
3
/h 1 m3/h
Gas valve restrictor diameter
..
without without
Propane L.P.G G31
Gas rate C/H max. .................. 1.94 kg/h 2.21 kg/h
Gas rate C/H mini
.................... 0.64 kg/h
0.73 kg/h
Gas valve restrictor diameter .. 4.40 mm 4.80 mm
24 kW
30 kW
24 kW
30 kW
24 : 380 30 : 405
Page 2
2
Pump and Expansion Vessel Characteristics
Components Location
N
ote : The system initial pressure should be over the following value :
System static height (in metre) + 0.7 = Initial pressure (in bar)
1
0
G
V F= high speed by-pass closed GVO = high speed by-pass open PV F= low speed by-pass closed PVO = low speed by-pass open
20 40 60 80 100 120
P
f
140 160 180 200 220 240
0,7
0,8
0
,9
1,0
1
,1
1
,2
1
,3
1
,4
1,5
1,6
1,7
1
,8
1,9
2,0
80°C
70°C
60°C
50°C
40°C
260
P
ression à froid pour le circuit chauffage (en bar)
C
liter
System capacity chart
Central heating initial pressure when cold (in bar)
0
4
3
2
1
5
6
100
200
800
700
600
500
400
300
900
1000
1100 l/h
mCE
Débit mini (robinets thermostatiques fermés)
Hauteur manométrique
GVF
GV
O
PVF
PVO
P
ump head available
Minimum flow rate (with all heating thermostatic valves closed)
bar
0
1
3
4
1
2
3
4
5
6
8
11
12
13
14
17
7
15
10
9
16
1.- Steel chassis complete with expansion vessel (not visible)
2.- Sealed chamber
3.- Burner and heat exchanger assembly
4.- Air / gas connection
5.- 24 V modulating fan
6.- Gas valve
7.- Ignition electrode
8.- Ionisation probe
9.- Ignitor
10.- Combustion products manifold
11.- 24 V transformer
12.- Siphon
13.- Electrical box
14.- Pump
15.- Shunt plate
16.- Pressure gauge
17.- Silencer
18.- Automatic air separator and automatic vent 19 -
Central heating flowswitch
21.- Central heating control thermistor
23.- Overheat sensor
37.- Central heating flow isolating valve
39.- Gas service tap
41.- Central heating return isolating valve
43.- Central heating pressure relief valve
46.- User’s guide
47.- Connecting tails (x3)
48.- Condensate drain
49.- Adjustable by-pass
50.- Right hydraulic assy
51.- Left hydraulic assy
23
21
19
18
23
39
4137
43
46
47
48
49
50
51
Page 3
3
FUNCTIONING
Control Panel
35
30
2
4
272
8
34
33 36
3
1
3
2
29
24.- Display
27.
- Setting key
28.- Setting key
29.- Central Heating switch
30.
- Green indicator – Central Heating mode ON
31.- Central Heating temperature reducing key
32.- Central Heating temperature increasing key
33.
- Green indicator – Power ON
34.- Orange indicator - Burner ON
35.- Red indicator - Lock out / flame failure
36.
- Reset key
Switching on
1. Check that pressure in central heating system is above 0.7 bar and below 1.5 bar with the pressure gauge 16.
2. Check that the gas service tap is opened at the gasmeter and main power is on. Green indicator Power ON
33.
3. Open the gas tap
39 (fi
g.21).
The boiler is now ready to use.
Attention ! If the boiler stays a long time without working, some air in the gas pipe can hinder the first lightings. (please refer to para-
graph 19 Incorrect Function)
Switching on Central heating
Press on key 29 , the green indicator 30 will light and the display will show the Heating
flow temperature.
Keys
31 and 32 allow to adjust the temperature required in the Central Heating system
regarding the weather conditions.
• press to increase temperature when weather is cold
• press to reduce temperature when weather is fair
During the temperature setting operation the display will flash. If the room thermostat is calling for heat, a dot will be displayed at the bottom of the 3rd digit
Turn off the boiler
- Press on key 29
,
to switch off CH mode. The green indicators
30 will stop
- Switch off the main electrical supply
- Shut off the gas service tap
39 (fig. 21)
Note : In this conditions, the anti-freeze system is inoperative
Stand by mode A fixed digit at the centre of the display and the green indicator 33 on
Putting the boiler in stand by mode and anti freeze system. :
Press on key 29
,
to switch off CH mode. The green indicators
30 will stop.
During the all duration of the stand by mode, an automatic anti-sticking system will switch on the pump for 1 minute and make a movement of the 3 way valve each 23 hours. The stand by mode will disable the anti-freeze function of the room thermostat (if fitted). To leave the room thermostat anti freeze system operative, please let the Central Heating mode on.
The boiler is equipped with an automatic anti freeze system which permanently on.
If the Central Heating temperature decrease bellow 7°C, the pump will start.
If the Central Heating temperature decrease bellow 4°C, the pump and the burner will start.
Page 4
4
Central Heating Mode
To be able to supply heating, the mode should be switched ON. Press on key 29 , the green indicator 30 will light, and the d
isplay will show the Heating Flow temperature.
Keys
31 and 32 allow to adjust the temperature required for Central Heating system regarding the weather conditions.
D
uring the setting operation, the display will flash. When there is a demand for heating, (either from the room thermostat or the clock) the pump starts. If the boiler temperature control i
s calling for heat and the primary flow rate over 4 lt./min., the central heating flow switch operates, allowing the ignition sequence to begin. The fan on the gas valve assembly starts and when the lighting speed is reached (detected by a hall effect sensor) the 2 safety solenoids open together to allow gas to the burner. The ignition sequence begins and a continuous high speed spark ignites the gas. As soon as a flame is detected, the orange indicator led
34 will light and the regulation system will be able to adjust the gas
rate regarding the heat load. If a flame is not detected, after 10 seconds, the security solenoids close together and shut off the gas. The red lockout indicator led
35 will light. Press the reset button to re-light the burner.
The central heating flow temperature is controlled by the central heating control thermistor
21. The boiler has been designed to
m
inimise cycling and will not attempt to re-light for at least 3 min. after the boiler thermostat has been satisfied. When the room
thermostat is satisfi
ed , the burner will switch off and the pump will remain running for a further 3 minutes before it too stops. Note It is possible to override the 3 minute delay by pressing the Reset key
36
Lockout procedure
Flame disappearance : When the ionisation electrode
8 does not detect flame presence. The orange indicator led 34 extinguishes. A lighting cycle starts. If
a flame is not detected, before 10 seconds, the safety solenoids will close. The lockout red indicator
35 lights and the display shows
the error code. The pump continues to run. After a few seconds, it will become possible to reset the boiler by pressing the reset key
36.
Overheat detection :
If an overheat (over 100°C) is detected in the primary circuit by the sensor 23, the safety solenoids close and the fan stops. The orange led
34 extinguishes and the pump remains running for 3 minutes. The reset will be possible when the primary temperature
will decrease under 76°C.
Page 5
5
CENTORA GREEN FUNCTIONAL DIAGRAM
4
9
4
8
4
3
41
1
9
16
39
3
7
2
1
2
3
1
8
14
1
3
1
2
6
3
8
5
7
DIAGRAM
ELECTRICAL WIRING
Page 6
6
5 ”
Menu - 1 - Default register
Record the last 10 defaults
Section Digit 1 Digit 2 and 3
Last default occured 0
•
code from 01 to 99
Last but one default occurred 1
•
code from 01 to 99
... ... code from 01 to 99
Last default occurred before the previous one 9
•
code from 01 to 99
Menu - 2 - Boiler conditions
Indicates the conditions or the configurations of the boiler
Section Digit 1 Digit 2 and 3
Software version of display PCB 0
•
10 to 99
Flue type 2
•
1 : FF
variable speed
Room thermostat is calling for heat 3
•
0 : no
3
•
1 : yes
CH flow temperature in Celsius degrees 7
•
from 00 to 99
Software version of main PCB 9
•
10 to 99
DISPLAY
ACTION CONFIGURATION
once
x times
x times
Note -- is displayed if no default is recorded.
Page 7
7
Menu - 3 - Boiler options
DISPLAY
ACTION CONFIGURATION
S
ection Digit 1 Digit 2 and 3
U
nder floor heating system 0
0 :
no
1 : yes
Factory
setting
once
x times
Menu - 4 - Boiler settings
Section Digit Digit
1 2 and 3
Room thermostat operation 0 0 : Burner only
0 1 : Burner and pump
Pump speed 1 0 : High speed
1 1 : Low speed
Pump post circulation duration 2 0.0 min
From 0 to 5 minutes by step of 0.5 min. 2 0.5 min
2 1.0 min
2 5.0 min
Maximum Central Heating flow temperature 4 50°C
4 80°C
CH anti cycling delay 8 0.0 min
From 0 to 7 minutes by step of 0.5 min. 8 0.5 min
8 2.5 min
8 5.0 min
CH maximum output limitation Model 24 From step 0 (P. min.) 8 kW Value from
to step 10 (P. max.) 24 kW 9 0 to 10 Model 30 From step 0 (P. min.) 9 kW Value from
to step 10 (P. max.) 28 kW 9 0 to 10
Factory
setting
D
ISPLAY
ACTION CONFIGURATION
once
x times
Page 8
8
Menu - 5 - Combustion rate control mode
X X
X X
D
ISPLAY
A
CTION
C
ONFIGURATION
wait 5 ”
Combustion rate control mode OFF
Switching on the combustion rate control mode. Central heating output reach the maximum power set in menu 4 section 9.
Central heating temperature is dis­played in celsius degrees. The 3 dots indicate that the combus­tion rate control is ON at maximum output.
Switching the combustion rate
down to minimum power.
Central heating temperature is dis­played in celsius degrees. The dot indicates that the combus­tion rate control is ON at minimum output.
Switching on the combustion rate to
maximum output set in menu 4 sec­tion 9.
Central heating temperature is dis­played in celsius degrees. The 3 dots indicate that the combus­tion rate control is ON at maximum output.
X X
Switching off the combustion rate
control mode.
press once
press once
press once
press once
press once
E
ffect Display
Locking conditions of the combustion rate control mode :
- boiler in stand by mode
- room thermostat is not calling for heat
- room thermostat is calling for heat but the maximum temperature is reached
- boiler in lockout mode
- after a reset or if the main supply fails
- end of the mode if operator leave menu 5
- after 15 minutes if there is no actions on keyboard
Nota :
As soon as the combustion rate control mode is on, Central Heating key is inactive.
Page 9
9
CH heat output setting :
If you would like to change the setting of C/H heat output, please proceed as follow :
(
note : the factory setting is 18 kW and the following explanation refer to menu 4 section 9)
-
Switch to installer mode, press key
and on the Right side for 5
s
econds.
The display shows :
-1- then 0•-- if there is no default in the default register.
- press 3 times on menu key (on the Left side ) to gain access to menu
-
4-,
The display shows :
-4- then the value set for section 0 ( 00
or 01 respectively Action on burner only or pump and burner)
- change for section 9 (Adjustment of CH heat output). Press on key on Right side 9 times. The display shows : (906 which corresponds to the 18 kW which is the factory setting) 9 = section 9 06 = 18 kW
- press on setting key (on the Left side) once, the 2nd and 3rd digits fl
ash
together. Then press the
key on
the DHW or CH side to change the C/H heat output steps between 00 and 10.
Press on setting key to confirm the value. The display stops fl
ashing. Setting procedure is finished. To exit from setting mode, leave the boiler for approx. 1 minute then the computer will switch back to user mode. After programming please close the door
P (fig. 18)
1
Display
2
x 3
1
2
or
3
3
x 9
4
4
5 ”
9
Adjustments and Settings (continued)
Page 10
10
REGULATION
FLOW SWITCHES
Temperature regulation for C/H circuit is controlled by 1 thermistor. The C/H knob allows the adjustment of temperature between 35 and 85°C.
Resistance value are
-
5000 Ω at 25 °C
- 2631 Ω at 40°C
- 620 Ω at 80°C
- 255 Ω at 110°C
Flow in Heating circuit is detected by 1 fl
ow switche. A piston with a magnet at the top operates a REED switch. The p
iston is lifted by flow rates listed below :
Flow rate threshold : C/H 250 l/h ±20 l/h
ROUTINE SERVICING
To ensure continued efficient operation of the appliance, it is recommended that it is checked and serviced as necessary at reg­ulars intervals. The frequency of servicing will depend upon the particular installation condition and usage, but in general, once a year should be adequate.
It is the law that any service work must be carried out by a competent person such as your local Chaffoteaux Service Centre, British Gas or other CORGI registered personnel in accordance with the current Gas Safety (Installation and Use) regulation.
Attention ! the air/gas connection pipe between the gas valve and the burner should never open. The seal can be checked only in the factory.
The service schedule should include the following operations :
- Check the pressure in the system
- Check the correct operation of the appliance
- Check the correct operation of the gas controls
- Check the functions of safety controls
- Clean the electronic board of the fan located on the gas valve assembly and the different transformers in the sealed chamber.
- Check combustion chamber insulation panels for damage
- Check the lighting and ionisation electrodes condition
- Clean the burner (Never use metallic brush which can damage the stainless steel)
- Clean the heat exchanger (Never use metallic brush which can damage the stainless steel)
- Clean the siphon and pay attention to the acidity of its contents
- Check the correct seal of the drain system
- Clean gas and water filters
- Check expansion vessel charge pressure
- Clean an check operation of safety valve
- Check the correct seal of the flue system.
Additional procedures that may be necessary :
- Check the burner pressure and the gas fl
ow rates
- Check, clean or replace components as necessary
- Carry out combustion test utilising the test points in the fl
ue turret
Suggested sequence for servicing :
Before disconnecting or removing any part, isolate the gas and electricity supplies. Ensure that the appliance is cool, and take care about the condensats products content in the siphon which are acid.
(For detail, please see section on Parts Removal and Replacement)
Preliminary checks
- Remove outer case
- Check the system pressure is at least 0.7 bar cold
- Check that the burner is extinguished fully when both solenoids are closed and fan is off.
- Test ionisation functions and check that lockout occurs by turning off gas tap.
- Whilst boiler is operating, check operation of the primary flow switch by closing heating flow valve and by pass screw (turn clockwise ) noting the number of turns so that it may be reset correctly.
- Control the correct fl
ood of condensats in the siphon which is transparent.
Page 11
11
REMOVAL AND REPLACEMENT OF PARTS
Before removing appliance case, isolate the gas and electrical supplies. Isolate b
oiler from the system and drain before removing any component in the water­ways. Ensure that the appliance is cool.
1. Outer Case
Remove four screws in base of case and lift free. When replacing, carefully locate on lugs T on top edge of chassis.
2. Sealed chamber front panel
Unscrew four self taping screws secur­ing the sealed chamber front panel and lift over top corner locating lugs. Reassemble in reverse order.
3. Combustion Chamber front panel and air/gas connection
Carry out step 1 and 2 as above. Unscrew three screws securing the air/gas connection pipe onto the gas valve assembly. Disconnect Ionisation and lighting electrodes from their wiring. Unscrew six nuts to release combustion chamber front panel and pull the assem
­bly towards you. Reassemble in reverse order.
4. Ionisation electrode
Carry out step 1 and 2 as above. D
isconnect ionisation electrode from its wiring. Loosen the 2 screws and pull it out from the combustion chamber front panel. Replace the ionisation gasket provided. Reassemble in reverse order
5. Lighting electrode
C
arry out step 1 and 2 as above. Disconnect lighting electrode from its wiring. Loosen the 2 screws and pull it out from the combustion chamber front p
anel. Replace the ionisation gasket
provided. Reassemble in reverse order.
6. Burner
C
arry out step 1, 2 and 3 as above. Remove the 4 Philips screw retaining the burner onto the combustion chamber. Pull it out with care to avoid any damage to the ceramic panel protecting the com­bustion chamber front panel. Replace the burner gasket. Reassemble in reverse order.
7. Gas vale assembly
Carry out step 1 and 2 as above. Unscrew three screws securing the air/gas connection pipe onto the gas valve assembly. Disconnect the connec­tors from gas solenoids and fan. Loosen the gas pipe nut. Unscrew six nuts to release combustion chamber front panel and pull the assembly towards you. Replace gas filter before fitting the full assembly back in the boiler.
8. Fan assembly
Carry out all operations mentioned in step 7. Unscrew the three screws secur­ing the air/gas connection pipe onto the gas valve assembly. Separate the gas valve assembly and the venturi from the fan assembly by loosen the two hexago­nal head screws. Reassemble in reverse order and replace the necessary gas
-
kets.
9. Gas section
Carry out all operations mentioned in step 7. Unscrew the three screws secur­ing the air/gas connection pipe onto the gas valve assembly. Separate the gas valve assembly and the venturi from the fan assembly by loosen the two hexago­nal head screws. The venturi and the gas section can be separated loosing the 2 screw located at the top of the gas valve. Replace necessary gaskets before reassemble in reverse order.
10. Venturi in the gas section
Carry out all operations mentioned in s
tep 7. Unscrew the three screws secur­ing the air/gas connection pipe onto the gas valve assembly. Separate the gas valve assembly and the venturi from the fan assembly by loosen the two hexago­nal head screws. The venturi and the gas section can be separated loosing the 2 screw located at the top of the gas valve. Replace necessary gaskets b
efore reassemble in reverse order.
11. Drain down
2 drain points are located on the boiler
.
1 = Air separator 2 = Heating circuit drain point
12. Water filter
The C/H filter is located in the right hydraulic assembly. Remove the return pipe as described previously and with­draw the filter. Reassemble in reverse order.
13. Flow switch
Drain boiler as in step 11. Disconnect the electrical plug, turn the top cover anti-clockwise, remove the O-ring and the brass piston. Reassemble in reverse order.
A
A
A
A
T
T
1
2
1
2
Page 12
12
16. Main heat exchanger
C
arry out step 1 and 2 as above. Drain down the boiler as in step 11. Unscrew t
hree screws securing the air/gas con­nection pipe onto the gas valve assem­bly. Disconnect Ionisation and lighting electrodes from their wiring. Unscrew six n
uts to release combustion chamber front panel and pull the assembly towards you. Undo the two clips of the pipes to the main exchanger and pull down the pipes. Unscrew the three screws located at the bottom, top left and at the right with the retaining system to be able to pull the main heat exchang­er towards you. R
eassemble in reverse order taking care about the location of the gasket on the f
umes collector and replace the neces-
sary gaskets.
17. Pump
Drain boiler as in step 11. Pivot the elec­tical box downwards. Open the electrical box cover removing the 2 screws. Remove the pump plug from the power board and earth plug from earth socket. Unscrew the nut
F of the return pipe
from the volute. Remove the clip G on the pump volute and pull the pump toward you. Reassemble in reverse order.
18. Pressure relief valve
The pressure relief valve can be ser­viced from the front of the appliance. Drain the boiler first, undo the retaining screw and pull out the valve.Reassemble in reverse order.
19. Thermistor
D
rain the boiler as step 11. Disconnect the plug, remove the retaining clip pull t
he thermistor out. Reassemble in
reverse order.
21 = Heating thermistor
20. Safety thermostat
Remove the casing as step 1 and hinge down the electrical box as step 5. Disconnect the 2 cables, pull out the sensor with the clip (23). Reassemble in reverse order.
21. Spark generator
Carry out step 1 and 2 as above. Unplug the connector from the spark generator located on the right hand side of the main heat exchanger. Loosen the two screws to remove the igniter. Reassemble in reverse order.
22. Main control board
Carry out step 1 as above and hinge down electrical box by pressing the retaining tabs
P on either sides. Remove
wiring cover C. Undo the 4 screws of the electrical rear panel and remove it. Unplug all cables from the PCB, remove earth plug from earth socket. Hang out the main PCB. Reassemble in reverse order.
23. Display PCB
C
arry out step 1 as above and hinge down electrical box by pressing the r
etaining tabs P on either sides. Remove the pressure gauge clip. Rotate the elec­trical box back in upper position. Undo the 2 screws retaining the front panel, p
ut your two hands at the bottom of the front panel and pull it down to release it from the 2 clips. Hinge down again the electrical box. Undo the 4 screws of the electrical rear panel and remove it. Unplug the display board cables from the main PCB. Reassemble in reverse order.
2
4. Expansion vessel
Remove the casing as step 1 and drain t
he boiler as step 12 above. Unscrew the connecting tails nuts and lift out the boil­er from the wall. Place it on a side on the floor. Remove the expansion vessel bracket retaining screws, disconnect the pipe from the vessel and pull it toward you. Reassemble in reverse order.
25. Pressure gauge
Carry out step 1 as above and drain the boiler as step 12. Hinge down electrical box by pressing the retaining tabs P on either sides. Press on the clip to remove it and pull it out. Remove the clip which hold the connection of the capillary on the pump hose. Hang out the pressure gauge with its capillary. Reassemble in reverse order.
F
G
21
23
P
P
C
Page 13
13
FAULT FINDING CHART Part 1
Switch on the main electrical supply
Does the green LED
alight ?
- Check mains electrical
connection
- Check internal fuses
- Check connection between
the 2 PCBs
Replace control PCB or
display PCB
Replace control PCB
Switch heating ON
Release pump rotor
Replace pump
Replace fan assembly
- Check heating flow switch
- Check the main heat exchanger.
They could be fully scaled.
Does the red LED
light ?
Does the display
show a - XX code ?
Does the fan run ?
Check heating fl
ow rate in
the circuit
Check voltage on the
fan
Check the 24 V at the
transformer
Press the reset button
Please refer to the list of error
codes and solve the problem
Check that the pump
spins freely
Check voltage in the
pump electrical box
Replace control PCB
Could you see the
spark generation?
Does the spark
generator energize ?
Does the -24 error
display ?
Replace spark generator or
ignition electrods assembly
Replace transformer or the rele-
vant fuse
Wait for 1 minute if the error
code 24 still display.
- check the connection fan or
replace the fan
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Ok
No
Ok
Replace heating thermistor
Check heating
thermistor
Ok
No
No
No
No
Yes
Yes
Yes
No
No
No
Ok
Ok
Ok
Ok
means a test or a choice
means an action
means a group of actions
error code displayed
PLEASE CHECK THE FOLLOWING POINTS CAREFULLY BEFORE
GOING THROUGH THE FAULT FINDING CHART
-Gas pressure
-Electric mains
-Minimum water pressure in the heating circuit (over 0.8 bar)
-All isolating valves have been opened
-Boiler air vented
-Check that the heating filter is clear.
- Remove the front panel of the sealed chamber
-7
Does the pump run ?
No
-7
-11
-12
Ok
Ok
No
No
-3
Wait for 4 seconds
Error code Description
1 Overheating LockOut
3 No flame detection
5 Anti-frost mode on
6 Anti-frost mode on
7 No water circulation
8 Faulty water circulation in the primary circuit
11 Central heating thermistor faulty, Opened circuit
12 Central heating thermistor faulty, Short circuit
18 Ignition test
20 Faulty connexion
23 Low speed fan
24 Faulty control functionning fan
31 Error communication with EEPROM
32 Error communication with the main PCB
-24
Page 14
14
FAULT FINDING CHART Part 2
Replace control PCB
Can you see the
fl
ame on the burner ?
Replace gas section assembly
Do you feel air draw
-
ing in at the air inlet ?
Do the gas
solenoïds energise ?
Check that air inlet pipe, ven
-
turi, fan, air/gas pipe or burner
are free of dust and not blocked
Purge the gas pipe and press
on reset button
Does the burner still
alight ?
Does the red LED
light and -3 displayed ?
Replace control PCB
Replace display PCB or control the
connection between the 2 PCBs
No
No
Yes
No
No
Does the orange
LED light ?
No
Yes
Yes
Yes
Yes
No
-3
Replace display PCB or control the
connection between the 2 PCBs
Is the combution
chamber full of conden
-
sates ?
Yes
Check ionisation
probe
No
Ok
Drain and clean combustion cham-
ber, siphon and drain pipes
Yes
Replace the ionisation probe
No
Wait until the return pipe
become hot then reduce CH
temperature to minimum
Does the orange
LED light ?
Replace control PCB
Yes
The boiler is OK
No
The heating outlet
pipe temperature rises
Page 15
15
SHORT LIST
110 ELECTRODE KIT 1309624
.
401 GAS VALVE (24 kW) 1307584
.
GAS VALVE (30 kW) 1310129
.
407 FAN ASSY 1307585
.
507 OVERHEAT THERMOSTAT 100
°C
1010572
.
510 THERMISTOR 1000733
.
532 WATER THROTTLE 81471
.
560 AIR SEPARATOR HEAD ASSEMBLY 1002653
.
572 PUMP UP 15/50 230V 1010612
.
607 IGNITER 1002105.20
.
615 PRINTED CIRCUIT BOARD 1310357
.
627 FUSE 250V 2A - TEMPORIZED 1003456
.
628 FUSE 250V 1A - TEMPORIZED 1003634
.
629 FUSE 250V 1.25A - TEMPORIZED 1003635
.
630 FUSE 250V 0.315A - TEMPORIZED 1307845
.
640 TRANSFORMER 1308149
.
805 PRESSURE GAUGE 1303158
.
938 PRESSURE RELIEF VALVE 1020933
.
DescriptionKey N°
Manf. Pt. N°
Type
G.C N°
FF
Manf. date
Centora green system
from to
110
407
401
532
572
640
510
507
R
4
1
R
37
R
31
R
3
0
R
2
9
J
7
C
3
8
R
102
1
+
+
+
+
+
+
+
+
8
C
68
R
2
8
S
T
2
F
T
1A
C
1
9
Z
11A
Z
1
0
A
Z
9A
Z
8
A
R
1
3
5
D
L1
T
H
1A
Z
7
A
Z
6A
R
132
U
5
Z
5A
Z
4A
T
E
R
R
E
-
1
T
H
1
R
4
8
R
2
7
R
9
1
R
8
9
R
4
7
C
83
C
78
C
80
C
7
9
S
T
1
R
87
Z
1
0
Z
9
Z
6
Z
7
Z
5
Z
4
Z
3
Z
2
Z
11
Z
1
U
3
U
10
U
9
U
7
U
6
U
4
T
R
1
T
H
2
T
E
R
R
E
T
8
T
7
T
5
T
4
T
3
R
4
6
T
2
T
6A
T
6
T
12
T
11
T
10
T
1
S
W
1
R
L8
R
L7A
R
L7
R
L6
R
L10
R
L5A
R
L5
R
L4A
R
L4
R
L
3
A
R
L3
R
L2A
R
L1A
R
L9
R
L1
R
A
D
1
R
118
R
114
R
113
R
111
R
112
R
1
1
0
R
1
0
9
R
108
R
107
R
106
R
9
R
105
R
101
R
1
0
0 R
9
9
R
9
8
R
97 R
96
R
8
R
95
R
94
R
93
R
9
2
R
90
R
88
R
6
6
R
6
5
R
6
4
R
62
R
7
R
58
R
59
R
57
R
2
4
R
52
R
53
R
51
R
6
R
5
0
R
4
9
R
55
R
5
R
2
2
R
7
9
R
78
R
77
R
4
5
R
4
3
R
4
4
R
4
2
R
4
R
39
R
3
8
R
35
R
34
R
3
R
33
R
32
R
19
R
1
8
R
2
R
1
6
R
2
0
R
2
1
R
15
R
1
4
R
2
6
R
25
R
2
3
R
13
R
131
R
1
3
0
C
82
C
8
1
T
14
T
13
D
4
5
D
4
4
R
L12
R
76
R
1
2
R
75
R
7
4
R
7
3
R
7
2
R
71
R
70
R
6
9
R
6
8
R
67
R
1
2
9
R
1
1
R
1
2
8
R
127
R
116
R
115
R
1
2
2
R
1
2
1
R
1
2
0
R
119
R
1
1
7
R
10
R
1
Q
1
P
2
P
1
M
O
V
1
L1
J
9
J
10A
J
8
J
6
J
4
J
3
J
2
J
1
F
T
1
F
3A
F
3
F
2A
F
2
F
1A
D
9
D
7
D
6
D
5
D
34
D
31
D
3
0
D
32
D
4
D
42
D
41
D
40
D
39
D
3
8
D
3
7
D
3
6
A
D
36
D
3
3
D
43
D
3
D
29
D
2
8 D
2
7
D
26
D
23
D
2
5
D
2
4
D
22
D
2
1
D
20
D
2
D
19
D
1
8
D
17
D
1
6
D
15
D
1
4
D
13
D
12
D
11
D
1
C
T
P
1
C
8
C
13
C
49
R
54
R
L11
C
3
4
C
35
C
3
2
C
7
J
5
C 5 3
C
6
C
52
C
51
C
77
C
76
C
75
C
74
C
72 C
71
C
70 C
69
C
5
C
50
C
48
C
47
C
46
C
45
C
4
4
C
43
C
42
C
6
7
C
4
C
6
6
C
6
5
C
6
4
C
6
3 C
6
2
C
61
C
60
C
59
C
22
C
56
C
55
C
54
C
3
3
C
31
C
41
C
39
C
3
7
C
2
C
3
6
C
29
C
3
0
C
28
C
27
C
26
C
2
5
C
1
0
C
11
C
9
C
3
C
24
C
23
C
2
1
C
20
C
18
C
17
C
1
6
C
1
5
C
14
C
12
C
1
K
VD
M/
A
VI
TESSE
K
1
1
1
1
1
EXT
1
P4
P3
P2
P1
BU
S
1
PR
O
G
TA
K
K
KC
D
1
K
K
2
3
0
V
+
5
V
TR CO
M
REP
8
1
2
3
4
0 
N
628
627
629
630
607
805
938
560
615
Page 16
1310558d - 12/2002
Chaffoteaux & Maury are continuously improving their products and therefore reserve the right to change specifications without prior notice and accepts no liability for any errors or omission in the information contained in this document.
Manufacturer: Chaffoteaux & Maury - France
Commercial subsidiary: MTS (GB) Limited
MTS Building Hughenden Avenue High Wycombe Bucks HP13 5FT
Telephone: (01494) 755600 Fax: (01494) 459775 Internet: www.chaffoteaux.co.uk E-mail: info@uk.mtsgroup.com
Technical Support Help Line: 0870 241 8180 Customer Service Help Desk: 0870 600 9888
This appliance is suitable for Natural gas or LPG. A gas conversion must be made by a competent person.
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