Vaillant ecoTEC plus 612 Instructions For Installation And Servicing page 46

8 Troubleshooting
Display Meaning
d.00 Heating part load
d.01 Water pump over run time for heating mode
d.02 Max. burner anti cycling period at 20 °C Flow tempera-
ture
d.03 Hot water flow temperature reading (800 series and
pro only)
d.05 Flow temperature target value
d.06 Hot water temperature target value
d.07 Warm start temperature target value (800 series and
pro only)
Storage temperature target value (600 series only)
d.08 External controls heat demand
d.09 Flow target temperature from external analogue regula-
tor to terminal 7-8-9/eBus
d.10 Status internal heating pump
d.11 Status external heating pump
d.22 Hot water demand
d.23 Summer/Winter function
d.25 Hot water activation via plug in timer
d.36 Hot water flow sensor
d.40 Flow temperature
d.41 Return temperature
d.47 Outside temperature (with connected VRC 410s)
d.67 Remaining burner anti cycling time
d.76 Appliance variant (device specific number)
d.90 Digital regulator status
d.91 DCF status with connected external probe with DCF77
receiver
d.97 Activation of the second diagnosis level
Table 8.2 Diagnosis codes of the first diagnosis level
Display Meaning
d.17 Heating flow/return regulation changeover
d.18 Pump mode
d.19 Only in ecoTEC plus:
Operating modes of the two-stage heating pump
d.26 Changeover option relay to BMU
d.30 Control signal for both gas valves
d.33 Fan speed target value
d.34 Fan speed actual value
d.35 Position of diverter valve (only 800 series)
d.44 Ionisation current
d.50 Offset for minimum speed
d.51 Offset for maximum speed
d.60 Number of temperature limiting cut-offs
Table 8.3 Diagnosis codes of the second diagnosis level
46
Display value/adjustable value
Adjustable heating part load in kW (factory setting: max. output)
1 - 60 min (factory setting: 5 min)
2 - 60 min (factory setting: 20 min)
in °C
in °C, min. 30 °C and max. the value set in d.71
in °C, 35 to 65 °C
in °C, 40 to 65 °C
in °C, 15 °C for left stop, then 40 to 65 °C
0 = no heat request
1 = heat request
in °C, minimum from ext. eBus target value and target value terminal 7
1, 2 = on, 0 = off
1 to 100 = on, 0 = off
1 = on, 0 = off
1 = Winter, 0 = Summer
1 = yes, 0 = no
in l/min
Actual value in °C
Actual value in °C
Actual value in °C (uncorrected value)
in min
00 to 99
1 = identified, 0 = unidentified (eBUS Address <=10)
0 = no reception, 1 = reception, 2 = synchronised, 3 = valid
Password: 17
Display value/adjustable value
0 = flow, 1 = return (factory setting: 0)
0 = return, 1 = nonstop, 2 = intermittent, 3 = winter
0 = Flow 300 msec Stage 2, then stage 1, drinking water/storage
charging Stage 2, heating stage 2, return stage 1
1 = Flow 300 msec Stage 2, then stage 1, drinking water/storage
charging Stage 2, heating stage 1, return stage 1
2 = Flow 300 msec Stage 2, then stage 1, drinking water/storage
charging Stage 2, heating in dependence on d.00, return stage 1
(factory setting)
3 = Flow Stage 2, drinking water/storage charging Stage 2, heating
stage 2, return stage 2
1 = circulation pump
2 = ext. pump
3 = Storage charging pump
4 = solar pump
1 = on, 0 = off
in rpm/10
in rpm/10
0 = Heating; 1 = Hot water; 2 = Centre position
Actual value/100 in A
in rpm/10, adjustment range: 0 to 254 (Factory setting: 20)
in rpm/10, adjustment range: -99 to -0 (Factory setting: -30)
Quantity
Instructions for installation and servicing ecoTEC