Troubleshooting
18 Output ports
NOTICE
Damage caused by continuous operation of individual components
The Output ports function activates individual components for function verification. Excessively long test operation can
destroy the components.
Activate the components only for a maximum of 2to3 s for the function test.
Switch off the components immediately after the test.
▪ The Output ports menu item is used for testing whether a signal is coming from the desired component and for
checking the functionality of a component.
▪ Following testing via the output ports, the components should if necessary also be tested via the input ports to
ensure an accurate diagnosis.
▪ Only one output port can be activated at a time.
The machine must be heated up so that the tests can be carried out in an optimum manner.
Danger of scalding or injury from working on a machine
Strict observation of the directions contained in the instructions is imperative.
Pay attention and work carefully.
Work as rapidly as possible.
Warning
NOTICE
Damage from overheating the boiler
The Output ports function activates the boiler for function verification. NTC temperature sensor monitoring is not active
during this process. Operating too long in test mode can ruin the boiler, particularly if it is empty.
Activate the components only for a maximum of 2–3 s for the function test.
Switch off the components immediately after the test.
For instructions on using Output ports, see Section 6 - Programming, V. Programming, 8. Output ports, p. 98 ff.
If test is unsuccessful:
▪ Check the electrical connections to the component (see Section 8 - Electrical diagrams).
▪ Repeat the test.
▪ Check the component and replace it, if necessary.
V. Output ports
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