Vaillant ecoTEC VU 656/4 Installation And Maintenance Instructions Manual page 47

Display Meaning
d.14 Pump speed target value
d.17 Heating flow/return regulation changeover
d.18 Specifying the pump operating mode
d.20 Maximum setting for cylinder target value
d.26 Additional relay control ecoTEC
d.27 Switch of relay 1 on the multifunction module "2 in 7"
d.28 Switch of relay 2 on the multifunction module "2 in 7"
d.50 Offset for minimum speed
d.51 Offset for maximum speed
d.60 Number of temperature limiter shutdowns
d.61 Number of faults in automatic combustion system
d.64 Average ignition time
d.65 Maximum ignition time
d.67 Remaining burner locking time
d.68 Unsuccessful ignitions at 1
d.69 Unsuccessful ignitions at 2
d.70 not relevant
d.71 Target value maximum heating flow temperature
d.72 Pump overrun time after cylinder charging
d.75 Maximum charging time for hot water cylinder without
independent control system
d.77 Limitation of cylinder charging output in kW
d.78 Limitation of charging temperature in °C
d.80 Operating hours heating
Table 9.3 Diagnosis codes for diagnosis level 2 (continued on
next page)
Installation and maintenance instructions ecoTEC 0020029173_01
st
attempt
nd
attempt
Display value/adjustable value
Target value of internal pump in % Possible settings:
0 = auto (factory setting)
1 = 53
2 = 60
3 = 70
4 = 85
5 = 100 (factory setting)
0 = flow, 1 = return (factory setting: 0)
0 = overrun
1 = run on
2= winter
3 = intermittent (factory setting)
40 to 70°C (factory setting: 65°C)
1 = circulator
2 = ext. pump (factory setting)
3 = cylinder charge pump
4 = extractor hood
5 = ext. solenoid valve
6 = ext. fault message
7 = not active
8 = remote control eBUS (not yet supported)
9 = legionella pump (not active)
1 = circulator (factory setting)
2 = ext. pump
3 = cylinder charge pump
4 = extractor hood
5 = ext. solenoid valve
6 = ext. fault message
7 = not active
8 = remote control eBUS (not yet supported)
9 = legionella pump (not active)
1 = circulator
2 = ext. pump (factory setting)
3 = cylinder charge pump
4 = extractor hood
5 = ext. solenoid valve
6 = ext. fault message
7 = not active
8 = remote control eBUS (not yet supported)
9 = legionella pump (not active)
in rpm/10, adjustment range: 0 to 300 (factory setting 30)
in rpm/10, adjustment range: -99 to 0 (factory setting -45)
Number
Number of successful ignitions in the last attempt
in seconds
in seconds
in minutes
Number
Number
Not relevant
Adjustment range in °C 40 to 85 (factory setting: 75)
Setting range in seconds: 0, 10, 20 to 600
(factory setting: 80 s)
Adjustment range in min: 20 - 90 (factory setting: 45 min)
Adjustment range in kW: depending on boiler
(factory setting: maximum output)
55 to 85°C (factory setting: 80 °C)
1)
in h
Troubleshooting 9
47