Fault Codes; Fault Memory - Vaillant ecoTEC plus 612 Instructions For Installation And Servicing

Display Meaning
d.78 Storage charging temperature limit (target flow tem-
perature in storage mode, system boilers only)
d.80 Heating operating hours
d.81 Water heating operating hours (combination boilers
only)
d.82 Cycles in heating mode
d.83 Cycles in hot water operation
d.84 Maintenance indicator: Number of hours until the next
maintenance
d.93 DSN appliance variant setting
d.96 Factory setting
1) Five-digit numbers are saved with the diagnostics codes 80 to 83. If d.80, for example, is selected, only the first two digits of the
number are displayed (e. g. 10). The display switches to the last three digits (e. g. 947) by pressing "i". In this example the number of
operating hours of the heating is 10947 h. The display returns to the selected diagnostics item by pressing "i" again.
Table 8.3 Diagnostics codes of the second diagnostic level
(continued)

8.1.3 Fault codes

Fault codes take priority over all other display functions
in the event of a system fault occurring.
If multiple faults occur, the corresponding fault codes
are displayed alternately for about two seconds each.

8.1.4 Fault memory

The fault memory stores details of the ten most recent
faults.
• Press the "i" and "–" buttons simultaneously.
• Use the "+" button to scroll back through the list of
memorised errors.
To cancel fault error memory display mode, proceed as
follows:
• Press the "i" button below the display or
• Do not touch any key for about four minutes. The dis-
play will now revert back to showing the current flow
temperature.
Instructions for installation and servicing ecoTEC / 839592_09
Display value/adjustable value
Adjustment range in °C 55 to 90 (Factory setting: 80)
1)
in h
1)
in h
1)
Quantity/100 (3 corresponds 300)
1)
Quantity/100 (3 corresponds 300)
Adjustment range: 0 to 3000 h and "-" for disabled
Factory setting: "-" (300 corresponds to 3000 h)
Adjustment range: 0 to 99
1 = Resetting adjustable parameters to factory setting
Troubleshooting 8
45