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11 Troubleshooting
11.1 Error codes
The boiler is fitted with an electronic regulation and control unit. The heart
of the control is a e-Smart microprocessor, which controls and also
protects the boiler. In the event of an error, a corresponding code is
displayed.
Error codes are displayed at three different levels:
Warning (A00.00)
Important
The boiler continues to operate but the cause of the warning must
be investigated. A warning can change into a blocking or lock-out.
Blocking (H00.00)
Important
The boiler starts up again automatically when the cause of the
blocking has been rectified. A blocking can become a lock-out.
Lock out (E00.00)
Important
The boiler starts up again only when the cause of the lock-out has
been rectified and reset manually.
The meaning of the code can be found in the various error code tables.
Make a note of the code displayed.
Important
The error code is needed to find the cause of the error quickly and
correctly and for any support from Remeha.
11.1.1 Warning - FSB-WHB-HE-150-300
Tab.46 Warning codes
Code Description Solution
A01.21 Maximum Dhw Temperature Gradient Level3
Exceeded
Temperature warning:
Check the flow.
A02.06 Water Pressure Warning active Water pressure warning:
Water pressure too low; check the water pressure
A02.18 Object Dictionary Error Configuration error:
Reset CN1 and CN2
See
The data plate for the CN1 and CN2 val
ues.
A02.37 Uncritical device has been disconnected SCB PCB not found:
Bad connection: check the wiring and connectors
Faulty SCB PCB: Replace SCB PCB
A02.45 Full Can Connection Matrix SCB PCB not found:
Carry out an auto-detect
A02.46 Full Can Device Administration SCB PCB not found:
Carry out an auto-detect
11 Troubleshooting
74 7665063 - v.05 - 18102018
74


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