Control Stop Or Lock-Out - REMEHA Avanta Range 24c Installation & Service Manual

Error Description
code
Parameter limits
é43
Parameter check
é44
Default parameters Automation settings
é45
Temperature/resistance diagram
25000
20000
15000
10000
5000
0
10 20 30 40
fi g. 63 Sensor resistance graph
Sensor resistance
Possible cause
Automation settings
Automation settings
50 60 70 80
temperature in °C
Check / solution
Replace d f / d U settings, see Par. 2.9.10
If this error code still returns after resetting; please contact Broag.
Replace d f / d U settings, see Par. 2.9.10
If this error code still returns after resetting; please contact Broag.
Replace boiler control unit.
table 13 Error codes
* When sensors have been taken out, be sure to replace them
max. 40 mm underneath heat exchanger.
If you read out a not listed error, please report to Broag.
4.3

Control stop or lock-out

The code d8 , d5 or d9 can appear in the display.
• Code d8 is a control stop and will appear if the measured flow
temperature (t1) is higher than the flow temperature set (Tset
flow). The boiler will start working again automatically once
the flow temperature falls below the flow temperature set.
• Code d5 is a control stop from 3 till 10 minutes and appears
90 100
if the set flow temperature (t1) has already been reached
and the heating demand still exists.
• Code d9 is a shut down and appears if the maximum
temperature rise is exceeded or if the dT between the sup-
ply and return temperature ≥ 45°C or a rate of rise in the
flow temperature > 1°C/sec. And also at a boiler-start with
no through 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 d9 is a shut down and can appear in the following
situation:
- the lock-out down input (between connectors 5 and 6 on
terminal block X9) has been activated (= opened).

The shut down will disappear once the cause has been
removed!
54
Remeha Avanta Plus