Service manual

46
Remeha Avanta 18v
4 ERRORS
4.1 General
The Remeha Avanta 18v 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 18v 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.

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 con-
tinues to appear, look for the cause in the error table below
and resolve it.
Error
code
Description Possible cause Check / solution
é0
Flow or return
sensor fault.
Short circuit in the flow, return or
boiler temperature sensor.
Check the wiring and the connections of the sensors visu-
ally: are the plugs all correctly in position? With a multimeter:
measure the resistance in the wiring and connection.
Defective or not (properly) con-
nected flow, return or boiler tem-
perature 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 kΩ
é1
Flow tempera-
ture is higher
than the set
maximum tem-
perature
Insufficient water. Check the water level and check for leaks.
No through flow.
Check that the pump is working; turn the spindle with a screw-
driver, 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 tem-
perature 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 kΩ