Technical data

57
08/06/06 - 300008460-001-B MCR 24, 24/28 MI, 30/35 MI, 34/39 MI
2 Control stop or lock-out
3 Faults (E+Number(XX))
The control panel on MCR boilers includes an error memory in which
the last 16 errors are memorised.
In addition to the error codes, the following data are also saved:
- Number of times that the error occured (n: XX)
- Boiler operating mode selected (St: XX)
- The outlet temperature (T1:XX) and the return temperature (t2:XX)
when the error occured
To get acces to the error memory, the acces code 12 must be
entered.
Code no. Meaning Description
8 Short circuit
Measured start temperature t1 > Outlet temperature defined (T
set
). The boiler restarts
automatically when the outlet temperature is lower than the defined outlet temperature
5 Control stop (3 to 10 minutes) The defined outlet temperature has been reached and the heating request is still present
9 Lock-out
Maximum tank temperature exceeded
or
The residual heat ∆T between the temperature provided and the return termperature is > 45°C
or
The maximum temperature increase speed tolerated in the exchanger has been exceeded
(>1°C/sec)
or
No circulation, The water level and/or pressure are too low.
or
Boiler blockage input: 1 or 2: open

The boiler restarts automatically after around 10 minutes