REMEHA Avanta Plus 24s, Installation And Service Manual

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Remeha Avanta Plus
4 ERRORS
4.1 General
The Remeha Avanta Plus has an advanced control unit. The
heart of this control unit is a microprocessor, the
abc
®
-con-
trol which both controls and protects the boiler. If an error is
detected anywhere in the boiler, it will lock-out and an error
code will appear in the display.
4.2 Error codes
The Remeha Avanta Plus displays the error codes as follows:
é 2 (the display alternately shows an é and a number e.g.
2 ) The meaning of the various error codes can be found in
the error table, see table 11.
How to deal with errors:
• Make a note of the displayed error code.
o
The error code is important for the correct and swift detection
of the nature of the error and for possible support from our
technical help line 0118 978 3434.
•
Press the ‘reset’ key for 3 seconds. If the error code contin-
ues to appear, look for the cause in the error table below and
resolve it.
Error
code Description Possible cause Check / solution
é
0
Flow or return
sensor fault.
Short circuit in the flow,
return or boiler temperature
sensor. Check the wiring and the connections of the sensors visually: are the
plugs all correctly in position? With a multimeter: measure the resist-
ance in the wiring and connection.
Defective or not (properly)
connected flow, return or
boiler temperature sensor.
Check that the sensors are working; take the sensors out * and
measure the resistance with a multimeter at room temperature (20
- 25°C); the sensor is working properly if the resistance is between
12 and 15 k
Ω .
é
1
Flow tempera-
ture is higher
than the set
maximum tem-
perature.
Insufficient water. Check the minimum water pressure, read off the gauge.
No through flow.
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; if
that is in order the pump is faulty.
Too much air in the system. Vent the system.
Deviation in the flow or
return temperature sensor.
Check that the sensors are working; take the sensors out * and
measure the resistance with a multimeter at room temperature (20
- 25°C); the sensor is working properly if the resistance is between
12 and 15 k
Ω .
é 2
Return tempera-
ture is higher
than the flow
temperature.
Insufficient water. Check the minimum water pressure, read off the gauge.
No through flow.
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.
Too much air in the system. Vent the system.
Sensors not wired correctly. Check the wiring between sensors and control unit.
Deviation in the flow or
return temperature sensor.
Check that the sensors are working; take the sensors out * and
measure the resistance with a multimeter at room temperature (20
- 25°C); the sensor is working properly if the resistance is between
12 and 15 k
Ω .