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MCBA FOR SPECIALISTS:
INSTALLER, SERVICE ENGINEER
COMMUNICATION MODE (WITH CODE)
When in this mode, the system displays the communication between
the boiler and the control module, the optional interface kit or the
optional programmable room thermostat.
FAN MODE (WITH CODE)
ERROR MODE (WITH CODE)
“ERROR” mode indicates the most recent error, as well as the
status of the boiler and its readings at the time this error occurred.
Fan speed
MODE
The current fan speed is 5,500 rpm.
STEP
Key Display Description of parameters
MODE
Code mode
(See the table on page 16 for a full list)
STEP
Status of the boiler at the time of the
error
(See the table on page 16)
STEP
Start temperature T1 at the time of
the error
MODE
Return temperature T2 at the time of
the error
STEP
Hot water temperature T3 at the time
of the error
STEP
Outdoor temperature T4 at the time of
the error
STEP
Key Display
Key Display Description of parameters
MODE
No communication
Communication between the boiler
module and the optional control
modules only (RMCI)
STEP
Communication between all the
devices connected
Key Display
Key Display Description of parameters
Temp. °C R Ω Temp. °C R Ω
-20 98200 40 6650
-15 75900 45 5520
-10 58800 50 4610
-5 45900 55 3860
0 36100 60 3250
5 28600 65 2750
10 22800 70 2340
15 18300 75 1940
20 14700 80 1710
25 12000 85 1470
30 9800 90 1260
35 8050 95 1100
100 950
Temperature sensor resistance tables