Shut-Off Mode (Bxx) - REMEHA Quinta 115 Technical Information

Shut-off mode
b
Forced full load.
h
Forced part load.
l
Table 04 Operating codes

6.4 Shut-off mode (bXX)

During shut-off mode condition the code-display will show a b, whilst the t-display
indicates the cause with two flashing dots.
Table below details cause of shut-off mode.
Code Description
Maximum acceptable flow temperature rise exceeded. The boiler will shut
B@%
off for ten minutes, then restart. Should the flow temperature conditions
remain the same after 5 attempts, this code will be recorded as a shut-
down failure. Boiler will not lockout.
Contacts of the external interlock have opened during heat demand.
b@^
The boiler will shut off for 120 seconds. Should the contacts close again
during heat demand, the boiler will wait the remaining time from the 120
seconds before attempting a restart.
Internal check on fan speed. After 5 attempts, the boiler will lockout. This
B@*
code will be recorded.
Internal check on fan speed. After 5 attempts, the boiler will lockout. This
B@(
code will be recorded.
Maximum temperature difference between flow and return exceeded. The
B#)
boiler will shut off for 150 seconds, then restart. Should the temperature
difference conditions remain the same after 10 attempts, this code will be
recorded as a shut-down failure. Boiler will not lockout.
One or several adjusted parameters out of range including some
B$#
factory defaults which should not have been changed. Check and reset
parameters:
- press the 'reset'-key imidiately followed by pressing the 'm'-key for
about 12 sec.,
- 'code'- display shows P ,
- use [+] and [-]-keys to enter correct boiler parameter ( P=14),
- press 'e'-key to confirm settings,
- check parameter settings and change were needed or disired.
Table 05 Shut-off codes
19