15
02/10/07 - 300015183-001-A
C 310 ECO - C 610 ECO
6.2.2
(Temporary) blockage
The blockage mode is a normal operating mode and therefore
does not indicate a breakdown but a normal boiler operating
status. A blockage code is likely to signal a technical problem in
the installation or an incorrect setting.
Message
Probable causes
Solution
BL. AIR
Air supply insufficient during pre-ventilation.
A safety lockdown occurs after 5 starts.
- if the flue gas / combustive air duct is not
blocked (i.e. siphon)
- if the air pressure switch and the
connection are blocked
BL.RET.HIGH.BOI
Return temperature > Flow temperature for
10 minutes minimum, after boiler operating at
lower stage
Connection or outlet and return sensor
reversed
BL.SPEED
The maximum temperature increase speed
tolerated in the exchanger has been
exceeded. The boiler is blocked for 10
minutes.
After 5 successive attempts during a single
heating request, the repeated cut-offs will be
saved (the blockage code and the boiler
situation at the time of the blockage).
- Pump
- Water flow
- Hydraulic pressure
BLOCKING b26
Check the bridge between terminals X4-8
and X4-3 in the box
BL.DT BOI BACK
he maximum difference tolerated between
the outlet and return temperatures has been
exceeded. The boiler is blocked for 150
seconds. After 20 successive attempts
during a single heating request, the repeated
cut-offs will be saved (the blockage code and
the boiler situation at the time of the
blockage). However, the boiler does not
break down and continues to operate.
- Pump
- Water flow
- Hydraulic pressure
BL.INT.MCBA
The setting of the parameters is incorrect or
the memory is faulty.
- Configuration of the communication robot
BL.SMOKE
Flue gas temperature > Flue gas
temperature maximum. Trigger 150 seconds.
- Boiler setting
- Fouling
BL.CS OPEN
Blockage input on the CS bridge terminals, is
open, or absence of a bridge.
- External safety and bridge
BL.DT BOI.EXC.
If
∆
T between boiler temperature and
exchanger temperature > 5°C
Trigger 10 Min. seconds. After 5 successive
attempts during a single heating request, the
repeated cut-offs will be saved (the blockage
code and the boiler situation at the time of the
blockage). The boiler will not be locked down.
- Pump
- Water flow
BLOCKING bXX
The control box is off.
Check the wiring
Reset the boiler
