Vaillant ecoTEC plus SERIES Installation And Maintenance Instructions

Troubleshooting
Installation and maintenance instructions ecoTEC plus 0020116700_01 67
13
13 Troubleshooting
13.1 Contact Vaillant Service Solutions
(0870 6060 777)
> If you contact Vaillant Service Solutions (0870 6060
777) or your Vaillant service partner, if possible, please
mention
– the fault code displayed (F.xx),
– the boiler status that is displayed (S.xx) in the "Live
Monitor" (¬section13.2.1).
13.2 Performing diagnostics
You can use the function menu to control and test individ-
ual components of the boiler in the fault diagnosis.
Menu ¬ Installer level ¬ Test programs ¬ Function menu
> Use the function menu for fault diagnosis
(¬section12.3).
13.2.1 Call up Live Monitor (status codes)
Menu ¬ Live monitor
You can call up the boiler status codes in the display which
provide information on the current operating status of the
boiler.
S.04
Heating mode
Burner on
Back
13.1 Status code display view
13.2.2 Status codes – Overview
Display Meaning
Heating mode
S.00 Heating, no heat demand
S.01 Heating mode fan start-up
S.02 Heating mode pump flow
S.03 Heating mode, ignition
S.04 Heating mode, burner on
S.05 Heating mode, pump/fan overrun
S.06 Heating mode, fan overrun
S.07 Heating mode, pump overrun
S.08 Heating mode, burner anti-cycling time
DHW mode (VUW boiler)
S.10 Hot water demand via impeller sensor
S.11 DHW mode, fan start-up
S.13 DHW mode, ignition
S.14 DHW mode, burner on
S.15 DHW mode, pump/fan overrun
S.16 DHW mode, fan overrun
S.17 DHW mode, pump overrun
DHW mode, (VU boiler with cylinder or VUW comfort mode warm
start)
S.20 DHW demand
S.21 DHW mode, fan start-up
S.22 DHW mode, pump running
S.23 DHW mode, ignition
S.24 DHW mode, burner on
S.25 DHW mode, pump/fan overrun
S.26 DHW mode, fan overrun
S.27 DHW mode, pump overrun
S.28 Hot water burner anti-cycling time
Special cases
S.30 Room thermostat (RT) is blocking heating mode
S.31 Summer mode active or no heat requirement from eBUS
controller
S.32 Waiting period because of fan speed deviation
S.34 Frost protection mode active
S.39 "Burner off contact" has triggered (e.g. contact thermo-
stat or condensate pump)
S.40 Comfort safety mode is active: Boiler running with lim-
ited heating comfort (¬section13.2.3)
S.41 Water pressure > 2.8 bar
S.42 Flue non-return flap return signal blocks burner opera-
tion (only in connection with VR40 accessory) or con-
densate pump faulty, heat requirement is blocked
S.46 Comfort safety mode, flame loss at minimum load
S.53 Boiler is in waiting period of modulation block/operation
block function due to water shortage (supply-return
spread too large)
S.54 Boiler is in waiting period of operation blocking function
as a result of water shortage (temperature gradient)
S.57 Waiting period, comfort safety mode
S.58 Modulation limitation due to noise/wind
S.61 Gas family check unsuccessful: The coding resistance on
the PCB does not match the entered gas family (see also
F.92).
13.1 Status codes

Vaillant ecoTEC plus SERIES Specifications

General

Model	ecoTEC plus SERIES
Mounting	Wall-mounted
Fuel Type	Natural Gas / LPG
ErP Heating Efficiency Class	A
NOx Class	5
Category	Boiler
Type	Condensing
Efficiency	Up to 94%
ErP Water Heating Efficiency Class	A