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7 Troubleshooting
6.5
Draining the heating system
Fig.18
1
2
5
4
6.6
Disposal and recycling
Fig.19
MW-3000179-03
7
Troubleshooting
7.1
Error codes
Tab.12
Error codes are displayed at three different levels
Code
Type
A.00.00
Warning
(1)
Blocking
H.00.00
(1)
Lock out
E.00.00
(1)
(1) The first letter indicates the type of error.
24
DIEMATIC Evolution - C140
It may be necessary to drain the central heating system if radiators need
to be replaced, if there is a major water leak or if there is a risk of freezing.
1. Open the valves on all the radiators connected to the system.
2. Shut down the boiler.
3. Wait approximately 10 minutes, until the radiators feel cold.
4. Connect a drain hose to the lowest draining point. Place the end of the
hose in a drain or at a place where drained pipe water will not cause
any damage.
5. Open the central heating system filling/draining valve. Drain the
installation.
3
6. Close the drain valve when no more water comes from the draining
point.
MW-2000561-1
The boiler is fitted with an electronic regulation and control unit. The heart
of the control is a microprocessor, which controls and also protects the
boiler. In the event of an error, a corresponding code is displayed.
Description
The boiler continues to operate but the cause of the warning must be investigated. A
warning can change into a blocking or lock-out.
The boiler starts up again automatically when the cause of the blocking has been recti
fied. A blocking can become a lock-out.
The boiler starts up again only when the cause of the lock-out has been rectified and
reset manually.
Warning
The water may still be hot.
Important
Removal and disposal of the boiler must be carried out by a
qualified person in accordance with local and national regulations.
7745361 - v03 - 29112021
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