Vaillant ecoTEC pro 28, Инструкция по установке и обслуживанию

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Instructions for installation and servicing ecoTEC
8 Troubleshooting
8.1 Logical fault finding procedure
These checks must be carried out before attempting to
use the fault finding guide.
1. Carry out electrical safety checks (see section
‘Preliminary Electrical Checks’).
2. Check that the external electricity supply to the boiler
is on, and a supply of 230 V~ is present between boiler
terminals ‘L’ and ‘N’.
3. Check that the gas supply to the boiler is on, that it
has been correctly purged and that an inlet pressure
of 20 mbar is available at the gas valve. (See section
‘Gas Supply’).
4. Ensure the heating system is full of water and charged
to between 1 and 1.5 bar. If not, refill and vent the sys-
tem. (See section ‘Filling the heating system’). Ensure
boiler flow and return service valves are open.
5. Check that the main on/off control is set to the ‘on’
position.
6. Set the central heating temperature to maximum.
7. Set the domestic hot water temperature to maximum
(only 800 series).
8. Check that all external controls are on and calling for
heat (if no external controls are fitted, boiler terminals
3 and 4 must be linked). Check that the boiler anti–
cycling economiser is not engaged.
8.1.1 Status codes
The status codes that you can see on the display pro-
vides information about the current operating condition
of the appliance.
The display of the status codes can be called as follows:
plus pro
Fig. 8.1 Display of status codes
• Press the “ i ” key.
The display shows the status code, e.g. S.04 for
“Burner mode - Heating”.
The display of the status codes can be cancelled as fol-
lows:
• Press the “ i ” key
or
• Do not press any key for about 4 minutes.
The current heating flow temperature appears in the
display again.
Display Meaning
All models (heating mode):
S.00 No heat demand
S.01 Fan running
S.02 Water pump running
S.03 Ignition sequence
S.04 Burner ignited
S.05 Fan and pump running
S.06 Fan over run
S.07 Pump over run
S.08 Anti cycling mode
ecoTEC 800 and pro series only (Domestic hot water mode):
S.10 Hot water demand
S.11 Fan running
S.13 Ignition sequence
S.14 Burner ignited
S.15 Fan and pump running
S.16 Fan over run
S.17 Pump over run
ecoTEC 800 and pro series only (warm start):
S.20 Warmstart demand
S.21 Fan running
S.22 Pump running
S.23 Ignition sequence
S.24 Burner ignited
S.25 Fan and water pump running
S.26 Fan over run
S.27 Pump over run
S.28 Anti cycling mode
All boilers:
S.30 No heating demand from external controls
S.31 Central heating thermostat knob turned off
S.32 Heat exchanger antifreeze active, as fan speed varia-
tion is too high. Appliance is within the waiting time of
the operation block function
S.34 Antifrost mode active
S.36 No heating demand from low voltage controls
S.53 Appliance is within the waiting period of the operation
block function due to water shortage (VL-RL spread too
big)
S.54 Appliance is within the waiting period of the operation
block function due to water shortage (temperature
gradient)
S.76 Appliance is within the waiting period of the operation
block function due to water shortage (water pressure
sensor)
Table 8.1 Status codes
8 Troubleshooting