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

4. Errors
Error
Description
code
Air box tempera-
e11
ture to high
Heat-exchanger
fuse protection
has responded;
replace the heat
e13
exchanger after
finding and solv-
ing the cause.
Parameter limits
e43
Parameter check Automation settings
e44
Default param-
e45
eters
table 13 Error codes
* W hen sensors have been taken out, be sure to replace them max. 40 mm underneath heat exchanger.
Temperature/resistance diagram
25000
20000
15000
10000
5000
0
10 20 30 40
fig. 64 Sensor resistance graph
Sensor resistance
54
Possible cause
Air leakage from heat
exchanger to air box
Heat exchanger faulty.
Insufficient water.
No through flow.
Automation settings
Automation settings
50 60 70 80
temperature in °C
Check / solution
Check:
• The sealing of the viewing glass;
• Whether front plate of heat exchanger is properly tightened
• Front plate sealing;
• Whether ignition electrode is properly fitted
Check wiring between heat exchanger fuse.
Check the minimum water pressure, read off the gauge and check
for leaks.
Check that the pump is working; turn the spindle with a screwdriver,
if that works but the pump still does not respond, check the wiring;
that is in order the pump is faulty.
Replace df / dV settings, see par. 2.9.10
If this error code still returns after resetting; please contact Remeha.
Replace df / dV settings, see par. 2.9.10
If this error code still returns after resetting; please contact Remeha.
Replace boiler control unit.
If you read out a not listed error, please report to Remeha.
4.3

Control stop or lock-out

The code K8 , K5 or K9 can appear in the display.
• Code K8 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 automatical-
ly once the flow temperature falls below the flow temperature
set.
• Code K5 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 K9 is a shut down and appears if the maximum
temperature rise is exceeded or if the ΔT 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.
90 100
• Code K9 is a shut down and can appear in the following
situation:
- T he 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!
Remeha Avanta Plus
127768-271011