Vaillant ecoTEC plus 612, Instructions For Installation And Servicing

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Instructions for installation and servicing ecoTEC
Second diagnostic level
• As described above in the first diagnostic level, scroll
through the diagnostic number d.97 .
• Change the displayed value to 17 (password) and press
the “ i ” button.
You are now in the second diagnostic level where all
information from the first diagnostic level (see table 8.2)
and the second diagnostic level (see table 8.3) is dis-
played.
Display Meaning Display value/adjustable value
d.17 Heating flow/return regulation changeover 0 = flow, 1 = return (factory setting: 0)
d.18 Pump mode (return) 0 = return, 1 = nonstop, 2 = winter (factory setting: 0)
d.19 Only in ecoTEC plus:
Operating modes of the two-speed heating pump 0 = pre ignition speed 1, hot water or heating speed 2, overrun speed
1
1 = pre ignition speed 1, hot water speed 2, heating speed 1, overrun
speed 1
2 = like 1, but speed in heating mode dependent on heating part load
d. 0 (if d.0 is below 60% of full load, then pump speed 1, other-
wise speed 2)
3 = always speed 2
(factory setting: 2)
d.20 Maximum set value for target cylinder temperature
(system boilers only) Setting range: 50 to 70 °C (factory setting: 65 °C)
d.27 Switching accessory relay 1 in the accessory module 1 = Circulation pump (default)
2 = Ext. pump
3 = Storage charging pump
4 = Flue gas flap/extractor hood
5 = External gas valve
6 = External error message
d.28 Switching accessory relay 2 in the accessory module 1 = Circulation pump
2 = Ext. pump (default)
3 = Storage charging pump
4 = Flue gas flap/extractor hood
5 = External gas valve
6 = External error message
d.50 Offset for minimum speed in rpm/10, adjustment range: 0 to 300
d.51 Offset for maximum speed in rpm/10, adjustment range: -99 to 0
d.58 From the third quarter of 2006:
Activation of solar reheating Setting range: 0 to 3
0 = solar reheating disabled (factory setting)
3 = activation of min. hot water target value = 60 °C for solar
reheating
d.60 Number of safety temperature limiter cut offs Quantity
d.61 Number of lock outs Number of unsuccessful ignitions in the last attempt
d.64 Average ignition time in seconds
d.65 Maximum ignition time in seconds
d.68 Unsuccessful ignitions in the first attempt Quantity
d.69 Unsuccessful ignitions in the second attempt Quantity
d.70 Set diverter valve position 0 = Normal mode (factory setting)
1 = Centre position
2 = permanent heating position
d.71 Maximum setting of heater control knob Adjustment range in °C: 40 to 85 (Factory setting: 75)
d.72 Pump overrun time after warm start (combination boil-
ers only) or charging an electronically controlled hot
water storage through C1-C2 (system boilers only) Adjustment range in sec: 0, 10, 20 to 600
Factory setting for combination boilers: 80
Factory setting for system boilers: 300
d.73 Offset for warm start target value (combination boilers
only) Adjustment range: -15 K to +5 K (Factory setting: 0 K)
d.75 Maximum charging time for a storage without own con-
troller (system boilers only) Adjustment range in min: 20, 21, 22 to 90 (Factory setting: 45)
d.77 Storage partial load (storage charging capacity limit,
system boilers only) Adjustment range in kW: appliance-specific
Factory setting: max. output
Table 8.3 Diagnostics codes of the second diagnostic level
Scrolling and changing values and exiting the diagnostic
mode is done as described in the first diagnostic level.
Note
After exiting the second diagnostic level, if you
press “i” and “+” within 4 minutes, you will
directly reach the second diagnostic level with-
out having to enter the password again.
Troubleshooting 8