Troubleshooting 5; Resetting A Fault - Vaillant ecoCRAFT VKK GB 806/2-E-H Operating Manual

5 Troubleshooting
If the boiler does not start, first check the following
points:
– Is the gas valve open?
– Is the installation fill pressure adequate?
– Is the power supply switched on?
– Is the main switch turned on?
– Is the regulator set correctly?
If the boiler does not start properly after checking these
points, consult an approved heating engineer to check
the unit.
5.1

Resetting a fault

Fig. 5.1 Fault resolution
Faults in a boiler module are displayed by the
corresponding red module fault resolution button (1) on
the operating field.
The faults on the boiler can be resolved as follows:
• First reset the relevant module by pushing the
corresponding red module reset button (1) on the
operating field.
• Then reset the unit electronics by the RESET button
(2) located next to the display.
• Repeat the process if the fault is still indicated after
the unit has been re-started.
Operating manual ecoCRAFT
The boiler will then perform a self-test. The basic display
appears on the multi-function display after the fault has
been resolved successfully.
Danger!
If the unit still does not start after repeating
the fault resolution process three times, then
an authorised heating engineer must be
consulted to check the unit.

Troubleshooting 5

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