12
C 310 ECO - C 610 ECO
02/10/07 - 300015183-001-A
6.2 Error messages
6.2.1
Faults
In the event of a fault, the display may show the following messages.
Contact your fitter.
Message
Probable causes
Solution
24V SHORT-CIRC.
Short circuit 24V
Check the wiring
BURNER FAILURE
Igniter fault
Check the ignition electrode (spacing of the electrodes), its
connector and its connection cable. Replace if necessary.
Ionisation error
Check the earth, Check the ionisation current, If necessary
rectify the level of CO
2
Faulty gas valve
Replace the gas valve
No gas or presence of air in the pipe
Measure the gas supply pressure. Bleed the gas circuit
I-CURRENT FAIL
Ionisation fault during operation
Check the earth, Check the ionisation current, If necessary
rectify the level of CO
2
MCBA FAILURE 5
External influences
Check the wiring
MCBA FAILURE 8
Air pressostat open
Check:
- if the flue gas / combustive air duct is not blocked (i.e.
siphon)
- if the air pressure switch and the connection are blocked
MCBA FAILURE 11
Internal fault
- Check that multi-wire connections are undamaged
- Presence of humidity in the control panel
- Eliminate electro-magnetic influences
MCBA FAILURE 12
Bridge open
- Check the bridge between terminals X4-3 and X4-12 on the
MCBA
- Fuse F2 faulty in the control p.c.b
MCBA FAILURE 30
T maxi exceeded
Check the water flow
MCBA FAILURE 61
Air pressostat closed
Check:
- If Faulty air pressostat
- If the wiring to the air pressure switch is in order
- If the thermal draught is too great
MCBA FAILURE 89
Detection of gas leak V1
The gas sealing control (optional) has detected a leak.
Check whether there is a leak in the gas valve; otherwise
replace the valve.
MCBA FAILURE 90
Detection of gas leak V2
The gas sealing control (optional) has detected a leak.
Check whether there is a leak in the gas valve; otherwise
replace the valve.
MCBA FAILURE XX
Internal safety control box fault
Reset the boiler. Replace the command and safety box.
MCBA.COM.FAULT
Communication error between DIEMATIC
and safety control box
Check the link and the connections between DIEMATIC and
safety control box
ROOM S.A FAIL.
ROOM S.B FAIL.
ROOM S.C FAIL.
EXCHAN.S.FAIL.
OUTL S.B FAIL.
OUTL S.C FAIL.
OUTSI. S.FAIL.
SWIM.P. S.FAIL
Fault in the corresponding sensor
Check the link and the connectors. Replace the sensor if
necessary.
To erase the message, briefly cut off the power to the boiler
using the On/Off switch. Advise the installer. However, you
can operate in manual mode on the part of the installation
concerned. See comments below.
FAN OFF FAIL
The fan is not working
- Faulty fan
- Check the fan wiring (corrosion of the connection)
- Command and safety box faulty
FAN ON FAIL
The fan is working constantly
- Electrical connections broken
- Faulty fan control (replace the fan)
