Errors - REMEHA Avanta Range 24c Installation & Service Manual

4 ERRORS

Error code Description
Flow or return sen-
é0
sor fault.
Flow temperature
is higher than the
é1
set maximum tem-
perature
Return temperature
is higher than the
é2
flow temperature
Control unit or
é3
earth fault
Possible cause
Short circuit in the flow, return
or boiler temperature sensor.
Defective or not (properly) con-
nected flow, return or boiler
temperature sensor.
Insufficient water.
No through flow.
Too much air in the system.
Deviation in the flow or return
temperature sensor.
Insufficient water.
No through flow.
Too much air in the system.
Sensors not wired correctly
Deviation in the flow or return
temperature sensor.
Mains supply not correctly
earthed.
Control unit faulty.
Remeha Avanta Plus
4.1 General
The Remeha Avanta Plus has an advanced control unit. The
heart of this control unit is a microprocessor, the abc
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 13.
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 conti-
nues to appear, look for the cause in the error table below
and resolve it.
Check / solution
Check the wiring and the connections of the sensors visually: are the plugs
all correctly in position? With a multimeter: measure the resistance in the wir-
ing and connection.
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.
Check the minimum water pressure, read off the gauge.
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.
Vent the system.
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.
Check the minimum water pressure, read off the gauge.
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.
Vent the system.
Check the wiring between sensors and control unit.
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.
Check that the power supply from the switch spur is properly earthed, if that
is the case the control unit is faulty.
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