Vaillant ecoTEC plus SERIES, Instructions For Installation And Servicing

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Installation and Servicing ecoTEC plus
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Display Meaning Display value/adjustable value
d.17 Heating flow/return regulation change over 0 = flow, 1 = return (factory setting: 0)
d.18 Pump mode (return) 0 = return, 1 = nonstop, 2 = winter (factory setting: 0)
d.19 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 30 = 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 boilers 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 (when
accessories are fitted): 80 Factory setting for system boilers: 300
d.73 Offset for warm start target value
(when accessories are fitted) Adjustment range: -15 K to +5 K (Factory setting: 0K)
d.75 Maximum charging time for a storage without own
controller (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 10.3 Diagnostics codes of the second diagnostic level
Troubleshooting 10