Vaillant ecoTEC plus 618 Spécifications télécharger pdf (Page 41)

41Instructions for installation and servicing ecoTEC

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.4 for “Burner

mode - Heating”.

The display of the status codes can be cancelled as fol-

lows:

• Press the “i” key

• Do not press any key for about 4 minutes.

The current heating flow temperature appears in the

display again.

Display Meaning

Heating mode (all models):

S. 0 No heat demand

S. 1 Fan running

S. 2 Water pump running

S. 3 Ignition sequence

S. 4 Burner ignited

S. 5 Fan and pump running

S. 6 Fan over run

S. 7 Pump over run

S. 8 Anti cycling mode

Domestic hot water mode (ecoTEC combination boilers only):

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

Table 8.1 Status codes

Display Meaning

Warm start (ecoTEC combination boilers only) / Charge hot

water cylinder (ecoTEC system boilers only):

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 (clamp 3-4

open)

S.31 Central heating thermostat knob turned off or no heat

demand by the eBUS control unit

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 (clamp

7-8-9)

S.41 Water pressure > 2,9 bar

S.42 Response from accessory modul or defective conden-

sate pump is blocking burner operation

S.52 Water pressure > 2,9 bar

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.96 Return-sensor check is running, demand (DHW or heat-

ing) is blocked

S.97 Water pressure sensor check is running, demand (DHW

or heating) is blocked

S.98 Flow-/Return-sensor check is running, demand (DHW or

heating) is blocked

Table 8.1 Status codes (continued)

8.1.2 Diagnostic codes

In the diagnostic mode, you can change certain parame-

ters or display more information.

The diagnostic information is divided into two diagnostic

levels. The second diagnostic level can be reached only

after entering a password.

Caution!

Access to the second diagnostic level must be

used exclusively by a qualified technician.

Troubleshooting 8

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