Errors; General; Error Codes - REMEHA Avanta 24c Installation And Service Manual

4. Errors

4 ERRORS
Error
Description
code
Flow or return
e0
sensor fault.
Flow tempera-
ture is higher
than the set
e1
maximum tem-
perature
Return tempera-
ture is higher
e2
than the flow
temperature
Control unit or
e3
earth fault
52
Possible cause
Short circuit in the flow,
return or boiler temperature
sensor.
Defective or not (properly)
connected flow, return or
boiler temperature sensor.
Insufficient water.
No through flow.
Too much air in the system. Vent the system.
Deviation in the flow or
return temperature sensor.
Insufficient water.
No through flow.
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.
Mains supply not correctly
earthed.
Control unit faulty.
4.1

General

The Remeha Avanta Plus has an advanced control unit. The
heart of this control unit is a microprocessor, the abc
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:
e2 (the display alternately shows an e 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 974 3070.
• 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 resist-
ance in the wiring 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.
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.
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.
Remeha Avanta Plus
-control
®
127768-271011