REMEHA Quinta 85 Technical Information download pdf (Page 19)

Shut-off mode

Forced full load.

Forced part load.

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

B@%

Maximum acceptable flow temperature rise exceeded. The boiler will shut

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.

b@^

Contacts of the external interlock have opened during heat demand.

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.

B@*

Internal check on fan speed. After 5 attempts, the boiler will lockout. This

code will be recorded.

B@(

Internal check on fan speed. After 5 attempts, the boiler will lockout. This

code will be recorded.

B#)

Maximum temperature difference between flow and return exceeded. The

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.

B$#

One or several adjusted parameters out of range including some

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=80),

- press ‘e’-key to confirm settings,

- check parameter settings and change were needed or disired.

Table 05 Shut-off codes

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 67 68

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REMEHA Quinta 85 Technical Information Page 19