49
4.3 Control stop or lock-out
The code
ÿ8
,
ÿ5
or
ÿ9
can appear in the display.
•
Code
ÿ8
is a control stop and will appear if the measured
flow temperature (
t1
) is higher than the flow tem-
perature set (T
set
flow). The boiler will start working again
automatically once the flow temperature falls below the flow
temperature set.
•
Code
ÿ
5
is a control stop from 3 till 10 minutes and
appears if the set flow temperature (t1) has already been
reached and the heating demand still exists.
•
Code
ÿ9
is a lock-out and appears if the maximum tem-
perature rise is exceeded or if the
d
T between the supply
and return temperature
≥
22°C or a rate of rise in the flow
temperature > 2,7°C/sec. and also at a boiler-start with noth-
rough flow or insufficient water. The boiler will try to restart
after 10 minutes.
Every 10 minutes the boiler will try to restart until the cause
has been removed.
•
Code
ÿ9
is a lock-out and can appear in the following
situation:
- the shut down input (between terminals 5 and 6 on X9)
has been activated (= opened).
The lock-out will disappear once the cause has been removed!
4.4 Error code memory
The Remeha Avanta 18v control unit has an error code mem-
ory, in which the last 16 errors are stored. In addition to the
error code (
é
and a number
xx
).
The following data is also stored:
•
the number of times the error occurred (
n
and a number
xx
)
•
the operating status of the boiler (
5t
and a number
xx
)
•
the flow temperature (
t1
and the value
xx
) return tem-
perature (
t2
and the value
xx
) at the time the error
occurred.
To get access to the error memory, access code must be
entered.
