C&M Calyadra comfort Manual

MAINTENANCE AND
SERVICE GUIDE
Fanned Flue Combination Boiler
Heating and Storage Domestic Hot Water
Dimensions
Technical data
Heat input C/H & DHW Cal. comfort 80 : 11.73 to 28.70 kW
Cal. comfort 100 :15.43 to 31.57 kW
Heat output C/H & DHW Cal. comfort 80 :9.5 to 24 kW
Cal. comfort 100 :12.5 to 28,2 kW
Max. operating pressure C/H circuit : 2.5 bar
Expansion vessel net capacity : 5.44 l
Expansion vessel initial pressure : 0.7 bar
Electrical consumption : 150 w
Voltage : 230 v
Electrical protection index : IP44
Fuses : 2 A and 1.25 A
DHW flow rate at @ AT 30 K Cal. comfort 80 : 12.1 l/min
Cal. comfort 100 : 14.1 l/min
DHW flow rate at @ AT 35 K Cal. comfort 80 : 10.4 l/min
Cal. comfort 100 : 12.1 l/min
Minimum DHW operating flow rate : 2.00 l/min
Minimum DHW working pressure : 0.5 bar
Maximum DHW working pressure : 10 bar
Gas category : II 2H 3+
Nominal gas flow rate at 15°C and 1013 mbar Calydra. comfort 80 Calydra. comfort 100
Maximum Minimum Maximum Minimum
power 25,9 kW power 9.5 kW power 31,1 kW power 9,5 kW
-Natural gas ( G 20) at 20 mbar 2.74 m3/h 1.00 m3/h 3.29 m3/h 1.00 m3/h
-Butane gas ( G 30) at 28 mbar 2.04 kg/h 0.74 kg/h 2.45 kg/h 0.74 kg/h
-Propane gas ( G 31) at 37 mbar 2.00 kg/h 0.72 kg/h 2.42 kg/h 0.72 kg/h
Injectors and gas valves seat diameter Calydra. comfort 80 Calydra. comfort 100
Natural gas Butane or Propane Natural gas Butane or Propane
-Solenoid restrictor diameter 2.60 mm 1.75 mm 2.90 mm 2.00 mm
-Gas valve restrictor diameter 6.70 mm 4.90 mm no resrictor required 6.70 mm
-Manifold injectors (16) 1.23 mm 0.70 mm 1.28 mm 0.76 mm
JKLMN I
54 54 54 54 68
360
2605050
738
850
380
212
ISafety valve outlet
JHeating flow
KD.H.W. flow
LGas supply
MCold water inlet
NHeating return
1
2
3
04
bar
1
2
3
04
bar
c
The boiler is suitable for the 4 flue types:
•type C 12
•type C 22
•type C 32 xx or C 32 xy
•type C 52
Outer case dimensions :
-Height : 850
-Width : 440 (minimum space required 450)
-Depth : 380
All dimensions in mm
Fig. 1
c
C

2
Pump and expanssion vessel characteristics
0
4
3
2
1
5
6
100 200 800
700
600
500
400
300 900 10001100 1200 l/h
mCE Débit mini (robinets thermostatiques fermés)
Pression disponible
20 40 60 80 100 120
Pf
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
Capacité maximale de l'installation (en litres)
80°C
70°C
60°C
50°C
40°C
260
Pression à froid pour le circuit chauffage (en bar)
Components location
34 35 36 37 38
21
Note : The system initial pressure should be over the following value :
System static height (in metre) + 0.7 = Initial pressure (in bar)
10
Head available / flow
Liters
Pressure System capacity chart
Fig. 2
21. DHW pressure relief valve
34. Heating Flow isolating valve
35. DHW outlet
36. Gas service tap
37. Water service tap
38. CH Return isolating valve
1. Air Pressure switch
2. Steel chassis complete with expan
sion vessel
3. Fan
4. Main heat exchanger
5. Combustion chamber made of alumi-
nium coated steel with 4 ceramic fibre
panels to provide heat insulation
6. Multigas burner comprising:
6a. 16 burner head
6b. Manifold
6c. 2 Ignition electrode
6d. Ionization electrode
7. Single speed pump
8. Heating flow switch
9. Automatic air separator and autimatic
vent
10. DHW thermistor
11. Sealed chamber
12. Electrical box
13. Overheat safety cutou
14. Gas section comprising:
14a. Security valve (grey)
14b. 1/3 gas stage (blue)
14c . 2/3 gas stage (black)
15. TSS mini cylinder
16. Central heating control thermistor
17. Three way valve
18. TSS thermistor
19. DHW flow switch
20. Secondary heat exchanger
23. Two position selector switch
24. DHW temperature adjustment
25. Heating flow temperature adjustment
26. Heating temperature indicator lights
27. Green indicator - Power ON
28. Orange indicator - Burner ON
29. Red indicator - Lock out / flame failure
30. Reset button
31. Pressure gauge
32 DHW mode indicator
33 Heating mode indicator
50. Adjustable by-pass
51. connecting bracket
52. 45° elbow including ventur
53. Expansion vessel (not visible)
54. Right hydraulic assy
55. Left hydraulic assy

3
FUNCTIONING
Switching on
1) Check that the gas service tap is opened at the gasmeter and
main power is on.
2) Check that pressure in central heating system is above 0.7 bar
and below 1.5 bar with the pressure gauge 31.
3) Open the gas tap 36.
4) The boiler is now ready to use.
5) Turn main switch 23 to position I. The green "power on" indi-
cator 27will light.
Hot Water
1) Turn the DHW temperature control knob clockwise 24. The
DHW indicator will light 32.
2) Turn on a hot water tap, the orange "burner on" indicator
will light 28 and the water will become hot..
Heating
1)Turn the CH thermostat control knob clockwise 25 The CH
indicator will light 33.
2) If the room thermostat (if fitted), the boiler temperature control
and the clock (if fitted) are all calling for heat, the orange
"burner on" indicator will light and the heating will be on.
Fig. 3
CALYDRA FUNCTIONAL DIAGRAM
4
5
9
7
14
8
54
2
11
13
15
12
6
10
55
17
20
19
1
3
52
18
Control panel
I
reset
23
32
242531
26
2729
30 28
33
Fig. 4
Hot water mode Fig. 5 Heating mode
52
50
8
3a
1
19
51
17
20
4
5
18
15
16 9
7
14
ac
b
6d 6c
6
12
13 53
34 36
35
37 38 21
10
Fig. 6

4
WIRING
DIAGRAM
When there is a need for hot water while
the heating is on, it is only necessary to
turn on a hot tap. The heating will be inter-
rupted momentarily while the hot water is
being delivered. The boiler will switch
back automatically to heating when the
tap is turned off.
Note: If the boiler has been turned off for
some time the first attempt to light it may
result in a lockout If this happens
press the reset button 30and the boiler
will light.
To Turn Boiler Off Completely
1) Turn the main switch 23 to the off posi-
tion O.
2) Turn the gas tap 36 (fig.2) OFF.
Domestic Hot Water Mode
In order to supply hot water, the main
switch 23 (fig. 4) must be in ON position I.
This will be confirmed by the green indica-
tor light 27 (fig. 4). Turn DHW temper-
ature adjustment knob 24 clock wise to
establish the green DHW indicator 32 (fig.
4).
The hot water temperature in the mini
cylinder can be adjusted between 40 and
60°C using control knob 24 (fig 4).
When a tap or shower is turned on, the
flow of mains water, above 2 litres per
min., will activate the 3 way valve 17
(fig. 4) to move to the DHW position. The
pump will now circulate primary water
heated by the main heat exchanger
through the secondary heat exchanger.
The first stage solenoid a(fig. 6) and safe-
ty solenoid c(fig. 6) 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 bulb 28
(fig.4) will light and the second stage sole-
noid b(fig. 6) opens to allow the full gas
rate. If a flame is not detected, after 8 sec-
onds, the security solenoid closes and
shuts off the gas. The red lockout indica-
tor bulb 29 (fig.4) will show. Over 2
l/min, the domestic hot water temperature
is controlled by the hot water control ther-
mistor 9(fig.6) and the heating control
thermistor 16(fig.6), but dependant upon
to the position of the DHW temperature
adjustment knob 24 (fig.4). This system
anticipates the changes of temperature in
the secondary heat exchanger and
ensures accurate temperature regulation.
When the tap is closed the burner is extin-
guished and the pump stops. (unless the
mini cylinder thermistor is calling for heat,
in which case the burner will remain on at
a low rate and the pump will continue run-
ning until the mini cylinder thermistor is
satisfied). The boiler will now stay in the
hot water mode for 30 seconds to be
ready for a subsequent draw off
Priority is given to a demand for hot water.
This will interrupt the central heating for
the duration of hot water delivery or recov-
ery of the mini cylinder.
When the boiler has been in standby in
Hot Water Mode for some time or when
drawing DHW at flow rates of less than
2 l/min the temperature in the mini cylin-
der will eventually decrease and the
TSS®control thermistor 18 (fig.6) will call
for heat. Bringing the pump and burners to
operate, until the cylinder thermistoris sat-
isfied. this is quite normal.
Central Heating Mode
To be able to supply heating, the main
switch 23 (fig.4) must be in Iposition. This
will be confirmed by the green indicator
light 27 (fig.4.) Turn the temperature
control knob 25 clock wise to establish the
green heating indicator 33(fig.4).
When there is a demand for heating
(either from the room thermostat or the
clock) and the boiler temperature control
is calling for heat. The pump starts allow-
ing the ignition sequence to begin. The
first stage solenoid a(fig.6) and safety
solenoid c(fig.6) 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 bulb 28
(fig.4) will light. After 45 seconds the sec-
ond stage solenoid b(fig.6) opens to allow
the full gas rate. If a flame is not detected,
after 8 seconds, the security solenoid
closes and shuts off the gas. The red lock-
out indicator bulb 29 (fig.4) will show.
The central heating flow temperature is
controlled by the central heating control
thermistor 16 (fig.6). The boiler has been
designed to minimise cycling and will not
attempt to relight for at least 3 minutes
after the boiler thermostat has been satis-
fied (it is possible to reduce the time to 30
s if necessary). When the room thermo-
stat is satisfied the burner will switch off
and the pump will remain running for a fur-
ther 4 minutes before it to stops.
NB : It is possible to override the 3 minute
delay by pressing the RESET button 30
(fig. 4)

5
Adjustment on the PCB :
-P3 : potentiometer TAC (Temporisation Anti Cycle)
may now be adjusted between 30 seconds and 3
minutes (see detail) (factory set at 3 minutes).
- JP3 : the spade connector allows the gas rate to be
reduced to 1/3 performance by positionning
spade across pins as shown A
Full performance across pins as shown B.(factory
set)
After completling adjustments replace rubber cover and
refit outer casing
ADJUSTMENTS ON CONTROL PCB
ROUTINE SERVICING
To ensure continued efficient operation of
the appliance, it is recommended that it is
checked and serviced as necessary at
regular intervals. The frequency of servic-
ing will depend upon the particular instal-
lation 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)
Regulations.
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 the safety con-
trols.
- Check combustion chamber insulation
panels for damage.
- Clean the burner.
- Clean the heat exchanger.
- Check the burner manifold injectors.
- Clean gas and water filters.
- Check expansion vessel charge pres-
sure.
- Clean and check operation of safety
valve.
Additional Procedures that may be
necessary:
- Check burner pressure and gas flow
rates.
- Check that the fan blades are clean.
- Check, clean and replace components as
necessary.
- Carry out combustion test utilising the test
points in the flue turret.
SUGGESTED SEQUENCE for SERVIC-
ING
Before disconnecting or removing any
parts, isolate the gas and electricity sup-
plies. Ensure that the appliance is cool.
(for detail please see section on Parts
Removal and Replacement)
Preliminary Checks
- Remove outer case
- Check the system pressure is at least
0.8 bar cold
- Check operation of solenoids.
- Check that the burner is extinguished fully
when solenoids are closed in both DHW
and C/H modes.
- Test ionisation functions and check that
lockout occurs by turning off gas tap.
Temperature regulation for both C/H and
DHW circuits are controlled by 2 thermis-
tors. The C/H knob allows the adjustment
of temperature between 35 and 85°C. The
DHW temperature is limited to 60°C. DHW
and C/H thermistors are identical and
interchangeable.
Resistance value are
-5000 Ωat 25 °C
-2631 Ωat 40°C
-620 Ωat 80°C
-255 Ωat 110°C
REGULATION
The air flow rate is detected by a pressure
differential created by a venturi located in
the flue duct.
ON threshold ∆P > 130 Pa
OFF threshold ∆P < 100 Pa
AIR PRESSURE SWITCH
C10C10
C11C11
C38C38
F1F1 F1AF1A
J1J1
J2J2
J5J5
MV1MV1
R67R67
R72R72
R73R73
R75R75
R76R76
R85R85
12
HOR
NL
THERMOSTAT
N
L
J9
J10
J11
TA
24 V
230 V
P3
(P3-P4-P5)
mini maxi
Detail
P3
P3
1/3
3/3
P3
P3
1/3
3/3
P3
JP3
A B

6
Before removing appliance case, isolate
the gas and electrical supplies. Isolate boil-
er from the system and drain before
removing any component in the water-
ways. 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 Bon top edge of chassis.
2. Combustion Chamber
Unscrew four self tapping screws securing
the sealed chamber front panel and lift
over top corner locating lugs. Unscrew four
self tapping screws to release combustion
chamber front plate and lift clear.
Reassemble in reverse order.
3. Burner Manifold
Carry out steps 1and 2as above. Remove
two screws securing the closure plate and
the remaining four screws to release the
manifold. Lift clear. Replace the manifold
gasket. Reassemble in reverse order.
4. Ionisation Electrode
Carry out steps 1and 2as above. Loosen
screws securing the closure plate and
remove. Disconnect the lead from the main
wiring loom. Remove screw securing elec-
trode to burner. Thread wire through grom-
met and lift clear. Reassemble in reverse
order.
1
2
3
04
bar
AA
Remove outer case and sealed chamber
front panel as in steps 1and 2.
Disconnect three pressure switch cables
noting their positions.
1 = white cable connected to NC
2 = black cable connected to NO
P = orange cable connected to C
Remove screw securing the switch
bracket to the chassis. Disconnect the
sampling tubes again noting their posi-
tioning (+ and -).
Remove switch. Reassemble in reverse
order.
11. Pressure Switch Venturi
Carry out steps 1, 2and 8, as above.
Disconnect the sampling tubes and
remove the screw securing the venturi to
the flue outlet. Remove venturi by the
bottom of the 45° elbow. Reassemble in
reverse order.
12. Drain down
2 drain
points are located on the boiler.
1 = DHW circuit drain point
2 = Heating circuit drain point
(Pressure releave valve)
13. Water filters ( Heating and DHW)
The C/H filter ensures a seal between
the return tail and the tap 5Fig. 2
unscrew the pipe nut and the tap nut.
Pull the tap toward you and remove the
C/H filter.
The DHW filter is located in the DHW
command 37 Fig. 2 on the right hydraulic
assembly. Remove the clip and pull
toward you the DHW command remove
the plug and clean the filter. Reassemble
in reverse order.
14. DHW Flow switch
Disconnect the electrical connections
undo the securing clip and remove the
microswitch reassemble in reverse
order.
15. Pressure relief valve
Drain the boiler first, unscrew the safety
valve head with a 24 mm spanner.
Reassemble in reverse order.
5. Ignition Electrodes
Carry out steps 1and 2as above. remove
the wiring cover undo the power lead plug
open the electrical box 2 clips. Dicconnect
leads from spark generator on PCB. Loosen
screws securing the closure plate and
remove. Remove grommet from base of
sealed chamber. Remove screw securing
electrode bracket and lift clear easing
spade connectors through the grommet.
Reassemble in reverse order, twisted
together electrodes cable at least 10 times
to avoid electrical interference.
6. Burner Assembly
Carry out steps 1,2, disconnect electrodes
as mentionned in section 4and 5. Remove
two screws securing burner assembly to the
back panel of the boiler. Lift right hand back
corner first. Reassemble in reverse order.
7. Gas Solenoids
Disconnect colour coded leads. Remove six
screws. The solenoids are attached to their
base plate. Lift clear taking care not to lose
the three plungers and springs.
Reassemble in reverse order replacing the
cork gasket.
8. Fan Assembly
Remove outer case and sealed chamber
front panel (See Steps 1and 2). Disconnect
spade connectors noting positions. Remove
two screws securing the front of the fan
assembly and loosen screw on flue outlet.
Twist fan assembly anticlockwise to disen-
gage from flue outlet and lift clear.
Re-assemble in the reverse order ensuring
that the wiring is re-connected correctly and
the screw on the flue outlet tightened.
9. Flue Hood
Carry out steps 1and 2as above. Remove
fan assembly as in step 8. Remove the
three screws securing the angled top of the
hood to the chassis. Lift and remove taking
care not to snag the pressure switch cables.
Re-assemble in the reverse order ensuring
that the hood is located behind the combus-
tion chamber rear panel.
10. Pressure Switch
REMOVAL AND REPLACEMENT OF PARTS
1
2
3
BB
AA
12
P
(air separator)
1
2

7
16. 3-Way valve
Drain boiler as in step 12.Remove the 2
clips on the 3 way valve hydraulic motor
17(fig. 6). Pull up the motor .Turn anti-
clockwise the 3 way valve body, rise it up
using a screw driver and remove it.
Reassemble in reverse order.
17. Secondary heat exchanger 20
Drain both circuits of the boiler as in step
12. Unscrew the 2 fixing screws Dand
remove the DHW exchanger from the
front. Prior to reassembly, check that the
4 gaskets are correctly positioned. The
heat exchanger is so designed that it
cannot be remounted incorrectly.
18. Main heat exchanger
Carry out steps 1and 2as above. Drain
boiler as in step 12. Remove the 2 clips
Elocated on return and flow pipes and
pull them downwards. Pull the main
exchanger toward you to remove.
Reassemble in reverse order
19. Expansion vessel
Remove the casing as step 1and drain
the boiler as step 12 above. Unscrew the
connecting 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.
20. Pump
Drain the boiler as in step 12.Open the
electrical box cover removing the 2
screws. Remove the main lead connec-
tion. Open the electrical box, 2 clips G
Remove the pump plug from the control
board and earth plug from earth socket.
Pivot the electrical box downwards.
Unscrew the nut Fof the flow pipe from
the volute. Remove the clip Hon the
pump volute and pull pump toward you.
Remove the back clip.
Reassemble in reverse order.
21. Thermistors
Drain the boiler as step 12. Disconnect
the plug, remove the retaining clip pull
the thermistor out
Reassemble in reverse order.
10 = DHW thermistor
16 = Heating thermistor
18 = TSS thermistor
22. Control board
Carry out step 1, open the electrical box
cover as mentionned in step 5. unplug all
cables from the PCB remove earth plug
from earth socket undo the screw fixing
the PCB. Hang out the control board.
Reassemble in reverse order.
23. Safety thermostat
Remove the casing as step 1unscrew
four self tapping screws securing the
sealed chamber front panel. Disconnect
the 2 cables, pull out the sensor with the
clip 13. Reassemble in reverse order.
24. R2i mini cylinder
You have to remove the hydraulic bloc.
Carry out steps 1and 2as above.
Drain the cylinder by removing the drain
plug J. Remove the 3 way valve as in
step 16. Remove all the connections of
main wiring. Remove the lid of connec-
tions box K. Disconnect the pump from
electronic circuit. Remove the manome-
ter. Unscrew the nut Lof the pipe
between the pump and the primary heat
exchanger. Remove the gas pipe by
unscrewing the two nuts M.
Remove the gas block by removing the 4
screws. Unscrew the last nuts of connec-
tion from the pre-installation gig.
Remove the two fastening screws of the
hydraulic block from the frame.
Pull all the hydraulic block toward you by
inclining it slightly. Remove the two clips.
Unscrew the two nuts fixing the cylinder.
Reassemble in reverse order.
E
13
DG
F
H
10
16
18
JK
LM

8
FAULT FINDING CHART Part 1
PLEASE CHECK CAREFULLY FOLLOWING POINTS BEFORE
GOING THROUGH THE FAULT FINDING CHART
-Gas pressure -Electric mains
-Minimal water pressure in the heating circuit (over 0.8 bar) - All isolating valves opened
- Boiler air vented
-Minimal domestic hot water flow of 2 l/min at 0.5 bar
-Check that the heating filter is cleaned.
- Put all buttons on OFF position (turn them anticlockwise)
Put the main switch on 1
Does the green LED
alight ?
Replace the PCB
Replace the PCB
Replace the DHW
flow switch
Release pump rotor
Does the red LED
alight ?
Does the fan run ?
Check if there is
voltage at the fan
Press on reset button to make
a new self test and reset
Does the pump run ?
Check the DHW
flow switch
Check voltage in the
pump electrical box
Check that the
pump spins free
Check heating
flow switch
Replace PCB
Replace spark generator or
ignition electrods assembly
Could you ear the
spark generation?
Does the spark gen-
erator energize
Check contact of
air pressure switch
between P and 2
The display flashes on 40/60/80
The fan stops after 45s
- Check pressure probes or
- Check Flue duct condition or
- Replace pressure switch
Yes
Yes
Yes
No
No
Ok
Ok
No
The display flashes on 60/70/80.
Replace heating flow switch, or
Check the plates exchanger
(Scaled)
The display flashes on
50/70/80 or 50/60.
Replace the heating thermistor
The display flashes on
40/60/70.
Replace the air pressure switch.
No
Replace the PCB or the wiring
Replace the fan
Check heating flow
switch
Check contact of air
pressure switch between P
and 1
Check if there is voltage
at between connectors P
and 1
No
Check the heating
thermistor
No
No
No
Yes
Yes
No
No
Ok
Ok
Ok
Ok
Ok
Ok
Draw of Domestic Hot Water
with a flow of 3 l/min,
Switch the Domestic Hot water
mode on and turn
DHW on
Please refer to the error list
and solve the problem
No
- Check mains inlet
connection
- Check internal fuses
- Check main switch on PCB
The display flashes on 50.
Replace the heating flow
switch
means a test or a choice
means an action
means a group of actions
Does the display
Flashe?
Ok
No
No
Replace pump
Please go to
the next page
No
Anytime the display can show an error code,
Please try to solve the problem and then press
Reset to make a new self test and start the boiler again
Yes
Ok
Yes
Yes
No
No

9
FAULT FINDING CHART Part 2
Does the orange
LED alight ?
Replace gas solenoïds
assembly
Replace electrod
assembly
Does the red LED
alight and 70/80 ?
Does the red LED
alight and 80 ?
Does the burner
alight more than 6 sec.?
Replace PCB Replace PCB
Purge gas pipes and press on
reset button
Does safety gas
solenoïds energized ?
Is there a gas
pressure at manifold ?
check the ionization
electrod
Does DHW
temperature over 50°C ?
Check DHW
thermistor
Does the heating
outlet pipe
temperature rise ?
Does heating LEDs
alight ?
Does the orange
LED alight ?
Replace DHW thermistor
The display flashes on
40/50/60/80
Check or replace the 3 ways
valves
Replace PCB
Replace PCB
Stop to draw water at the tap
- Rotate counter to clockwise
DHW potentiometer close
to the minimum.
- Adjust the DHW flow rate at
3l/min on a tap.
- Wait until the temperature
becomes stable.
- Switch OFF the DHW mode,
- Rotate clockwise the heating
potentiometer to maximum position,
- Press on RESET button to cancel all delays.
- Insure that external controls are calling for
heat.
Yes
The boiler is OK
No
Yes
Yes
Yes
No
No No
Ok
No
No No
Yes
Yes
No No
No No
Does the DHW
temperature rise ?
No
Yes
No
Ok
Replace the domestic hot
water heat exchanger or the
main exchanger
Yes Yes Yes
Yes
Check the wire or
replace overheat sensor
Replace PCB
Replace PCB
From the previous
page 8

10
Incorrects functions is signalled by leds (rep 26) display flashing correspond with chart below.
INCORRECT FUNCTION
CODE FAULT INFORMATION
30 40 50 60 70 80
mmmmmmmmmmllOverheating safety feature
mmmmmmmmllmmOverheating defect without locking
mmmmmmmmllllMisfiring safety feature
mmmmmmllmmmmFire detection without burner working
mmmmmmllmmllBesides freezing pump
mmmmmmllllmmBesides freezing burnerr
mmmmmmllllllLack of water circulation.
mmmmllmmmmmmPrimary water circulation defect
mmmmllmmmmllThermistor sanitary open
mmmmllmmllmmThermistor sanitary bypassed.
mmmmllmmllllThermistor inlet heating open
mmmmllllmmmmThermistor inlet heating bypassed
mmllmmllmmllExtractor on and pressure regulator at rest
mmllmmllllmmExtractor off and pressure regulator at rest
mmllllmmmmllThermistor cylinder open
mmllllmmllmmThermistor cylinder bypassed
mmllllllmmllDistribution valve stuck on heating
mm= LED off
ll= LED blinking

11
SHORT LIST
113
111
216
110
104
505
514
402
605
938
532
627
629
615
607
588
572
606
206 636
104 OVERHEAT THERMOSTAT 100°C 277783 1010572 ..
110 IGNITION ELECTRODE 277788 1002801 ..
111 IONIZATION ELECTRODE 277789 1002802 ..
113 HEAT EXCHANGER 277790 1010017 .
HEAT EXCHANGER E00606 1011136 .
206 FAN ASSY 1304720 ..
216 AIR PRESSURE SWITCH 24KW 1306697 .
AIR PRESSURE SWITCH 28KW 1307335 .
402 SOLENOID VALVES KIT E23494 81836 NAT ..
505 THREE-WAY VALVE E23510 81839 ..
514 WATER / WATER HEAT EXCHANGER 1302409 ..
532 WATER THROTTLE 277846 81471 ..
588 AIR SEPARATOR HEAD ASSEMBLY 1304608 ..
572 PUMP + AIR SEPARATOR 15/50 1301964 ..
PUMP + AIR SEPARATOR 15/60 1303461 ..
605 CONNECTOR 1302101 ..
606 CONNECTOR 1303697 ..
615 PRINTED CIRCUIT BOARD 1307627 ..
627 FUSE 250V 2A - TEMPORIZED 277883 1003456 ..
629 FUSE 250V 1.25A - TEMPORIZED 277884 1003635 ..
607 PRESSURE GAUGE 1303159 ..
636 KNOBS SET 81979 ..
938 PRESSURE RELIEF VALVE 1020933 ..
DescriptionKey N°
Manf. Pt. N°
Type G.C N°
FF FF
Manf. date
80
CALYDRA COMFORT
100
CALYDRA COMFORT
from to

Ref. : 1309148c - 06/2004
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: [phone]
Fax: [phone]
Internet: www.chaffoteaux.co.uk
E-mail: [email protected]
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.