Baxi ECOGEN 24/1.0, Installation & Servicing Instructions Manual

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Section B ­ PCB
Error codes 10 through 99 (except for 20, 30, 32 and 40) are linked to installation and the commissioning of the appliance and as such are linked to the system setup, you should
contact the householder (or installer) for the system details and refer to the commissioning
section 11 to aid resolution of any problems.
The sensors used should give a resistance of 10k Ohms at 25 degrees C except for the outside sensor which is 1k Ohms at 25 degree C. Only those sensors wired back to the
appliance can be checked, RF units are sealed and cannot be repaired. If there appears to be a problem with a remote unit, check the condition of the battery.
If this does not resolve the problem ­ the unit may not be bound to the appliance properly ­ see the section on the installation and binding of the RF components to the appliance,
section 10.17. Hold the RF unit next to the aerial and repeat the binding process. If the problem persists check the connection of the aerial back to the main PCB ­ if other units
appear to be bound and operational replace the RF unit.
Error 50 ­ See DHW Cylinder Sensor Instructions and above comments.
Error codes 28, 54, 85, 91, 92, 95, 96, 97, 121 and 122 are associated with on board electronic problems and will require a new PCB.
Error 83 External room connections incorrect ­ see Fig. Section 16.6 ­ External Connections and Section 10.13.
Error 84 THINK Controller ­ needs reassigning power down ­ see Section 10.12.
Errors 128, 146, 150, 154, are used for OCI611 remote diagnostics. If displayed, change the PCB.
Error 97, check the 6 way BCU connections first before replacing the MCB. This error may occur with faulty connections/wiring along with errors 114 and 158 see section D .
Error 102 Battery back up ­the battery is on the PCB and not replaceable ­ if problem persists PCB will need changing.
Section C ­ Temperature control
Error 40 on installation may mean that the instructions in Section 11.2 have not been carried out.