Vaillant 824/2 E Instructions For Installation Manual page 39

10.6 Diagnostic Modes
In order to assist with the pinpointing of a particular
fault it is possible to use the boiler display in a
diagnostic mode to interrogate the boiler about the
status of certain components.
• Press the "i" and "+" buttons below the display
simultaneously. The display will now show "d.00".
• Use "+" or "-" buttons to scroll up or down to the
desired diagnosic number.
• Press "i" button to display the corresponding
diagnosic information.
Display Indication
d.00 Part load setting
d.01 Water pump over run
d.02 Maximum burner anti cycling period at 20 °C flow temperature
d.05 Flow temperature setting
d.07* 1. Vantage hot water temperature (not applicable)
2. Warmstart temperature setting (applies to turboMAX plus only)
d.08 External controls heat demand
d.10 Pump status
d.11 External pump status
d.21 Flame rectification
d.22* Domestic hot water demand
d.23 Summer/winter function (control knob)
d.24 Air pressure switch
d.25* Warmstart status (turboMAX plus)
d.30 Gas valve status
d.33 Required value of the rotary speed of the fan
d.34 Actual value of the rotary speed of the fan
d.35* Diverter valve position
d.37 Modulator current
d.40 Actual flow temperature
d.41 Current return temperature (837/637 only)
d.50 Maximum flow temperature
d.60 Number over heat cut off operations
d.61 Number of lock outs
d.64 Average ignition time
d.65 Maximum ignition time
d.67 Remaining anti cycling period
d.68 Number of unsuccessful attempted 1st ignitions
d.69 Number of unsuccessful attempted 2st ignitions
d.71 Maximum target value for heating system flow temperature
d.72* Pump over run (for loading warmstart)
d.73* Offset warmstart temperature value
d.75 Maximum hot water priority operation time (Vantage only)
d.76 Gas type set (837/637 only)
d.80** Number of heating system operating hours (Total)
d.81* Number of hot water system operating hours (Total)
d.82 Number of heating system cycles (Total)
d.83* Number of hot water system cycles (Total)
Table 10.2: Diagnostic Modes
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R1
Supplied By www.heating spares.co Tel. 0161 620 6677
• If necessary, you can now alter the value by pressing
"+" or "-" buttons. (When altering values display will
flash). Press and hold the "i" button to save the value
to memory, when the value is saved the display will
stop flashing.
Diagnosic mode is cancelled as follows:
• Press the "i" and "+" buttons simultaneously
or
• Do not press any key for approximately four minutes.
The display will now revert back to showing the
current flow temperature.
Displayed values/adjustment values
0 - 15 (0 - 30, 837/637 only)
1, 2, 3, ...60 min (factory adjusted setting: 5 min)
8 - 60 min (predelivery setting: 15 min)
°C
1. 15 - 75 °C
2. 40 - 65 °C
0 = open, no demand; 1 = closed, demand
1 = ON; 0 = OFF
1 = ON; 0 = OFF
1 = ON; 0 = OFF
1 = ON; 0 = OFF
1 = winter; 0 = summer
1 = ON; 0 = OFF
1 = ON; 0 = OFF
1 = ON; 0 = OFF
r.p.m. (837/637 only)
r.p.m. (837/637 only)
1 = hot water; 0 = heating system
mA
°C
in °C
°C
s
s
s
min
0 = 82 ° C ; 1 = 87 °C (factory setting: 82 °C)
0, 1, 2, ... 250 s (factory-adjusted to: 80 s)
-15, -14.......+5 K (factory-adjusted - 5 K)
20, 21, 22 ... 90 min (factory-adjusted to: 30 min)
H36 (nat gas) P36 (LPG) E36 (E+ gas).
Factory setting H36
h
h
* turboMAX plus only
Fault Finding 10
39