Technical data

Installation and maintenance instructions ecoTEC exclusive 0020017768_0542
9.1.2 Diagnosis codes
In the diagnosis mode, you can change certain para-
meters or display more information.
The diagnosis information is divided into two diagnosis
levels. The 2nd diagnosis level can be reached only after
entering a password.
a
Caution!
The access to the 2nd diagnosis level may only
be used by a qualified heating engineer.
1st diagnosis level
• Press the "i" and "+" buttons simultaneously.
The display shows "d.0".
• Scroll to the desired diagnosis point of the 1st
diagnosis level using the buttons "+" or "–"
(see Table 9.2).
• Press the "i" button.
The display shows the relevant diagnosis information.
• If necessary, use the "+" or "–" keys to change the
value (display flashes).
• Save the new value by holding down the "i" button for
approx. 5 seconds until the display no longer blinks.
You can end the diagnosis mode as follows:
• Press the "i" and "+"
buttons simultaneously or
• Do not press any button for about 4 minutes.
The current pressure in the heating system appears in
the display again.
2nd diagnosis level
• Scroll as described above in the 1st. diagnosis level to
diagnosis number d.97
• Change the displayed value to 17 (password) and save
this value.
You are now in the 2nd diagnosis level in which all
information from the 1st diagnosis level (see Table 9.2)
and the 2nd diagnosis level (see Table 9.3) is displayed.
Scroll and change values and exit diagnosis mode as
described in the first diagnosis level.
h
Note!
If you push the buttons "i" and "+" within
4 minutes of leaving the 2nd diagnosis level,
you can directly access the 2nd diagnosis level
without having to re-enter the password.
9 Troubleshooting