Troubleshooting; Error Codes - REMEHA Calenta 25s Installation And Service Manual

Calenta 25s - 28c - 35s - 40c
8

Troubleshooting

8.1

Error codes

Error Description
code
Storage unit PSU
e[00
parameter not found
The safety parameters
e[01
are incorrect
Flow temperature sensor
e[02
short circuited
Flow temperature sensor
e[03
open circuit
040412 - 7600585-01
The boiler is fitted with an electronic regulation and control unit. The
heart of the control system is a microprocessor, the Comfort
©
, which controls the boiler and also protects the boiler. If a
Master
fault is detected anywhere in the boiler, the boiler locks out and the
display will show the fault code as follows:
In a red flashing display:
4 The symbol c
4 The symbol J
4 The fault code (for example e[01)
The meaning of the error codes is given in the error table. To do this,
proceed as follows:
4 Note the error code displayed.
The error code is important for rapid and correct tracking
of the type of problem and for any technical assistance from
Remeha.
4 Press the J key for 2 seconds. If the error code continues to
display, search for the cause in the error table and apply the
solution.
If the display does not show J but rather a, the boiler
must be switched off and then switched on again after 10
seconds before the fault can be reset.
Probable causes
Bad connection
4
Bad connection
4
PSU defective
4
Bad connection
4
Sensor fault
4
Sensor not or badly
4
connected
Bad connection
4
Sensor fault
4
Sensor not or badly
4
connected
Checking / solution
Check the wiring
4
Check the wiring
4
Replace PSU
4
Check the wiring
4
Check that the sensors are operating correctly
4
Check that the sensor has been correctly fitted
4
Replace the sensor if necessary
4
Check the wiring
4
Check that the sensors are operating correctly
4
Check that the sensor has been correctly fitted
4
Replace the sensor if necessary
4
8. Troubleshooting
85