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Troubleshooting

Installation and maintenance instructions ecoTEC 0020173113_01

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

13.2.1

Calling up Live Monitor (status codes)

You can call up the boiler status codes in the display which
provide information on the current operating status of the
boiler.

Press the left-hand

and right-hand selection

buttons

at the same time

S.04

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

13.1 Status codes

13.2.3

Status codes – Overview

Display Meaning

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 is running with lim-
ited heating comfort (

¬ section 13.2.4

)

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.76

System pressure too low; top up water

S.96

Return temperature sensor test running, heating
demands are blocked

S.97

Water pressure sensor test running, heating demands
are blocked

S.98

Flow/return temperature sensor test running, heating
demands are blocked

13.1

Status codes (continuation)

Содержание ecoTEC VU

Страница 1: ...Installation and maintenance instructions For the competent person Channel Islands Installation and maintenance instructions ecoTEC VU VUW...

Страница 2: ...Connecting the hot and cold water VUW boiler 22 6 3 Connecting the domestic hot water cylinder 22 6 4 Connecting the heating flow and heating return 22 6 4 1 VUW boiler 22 6 4 2 VU boiler 22 6 5 Low l...

Страница 3: ...cking the burner 56 12 3 4 Cleaning the condensate trap 57 12 3 5 Cleaning the filter in the cold water inlet VUW boilers only 57 12 3 6 Installing the compact thermal module 58 12 3 7 Checking the ch...

Страница 4: ...ntification plate The identification plate of the Vaillant ecoTEC is attached to the underside of the boiler in the factory The article number of the gas fired wall hung boiler can be found in the ser...

Страница 5: ...ons ecoTEC 0020173113_01 5 1 1 7 Type overview Unit type ecoTEC Designated coun try designation in accordance with ISO 3166 Approval category 22 VU GB 226 5 3 GB Great Britain IE Ireland II2H3P 26 VUW...

Страница 6: ...hey do not play with the boiler The boiler is intended as a heater for closed hot water cen tral heating installations and for hot water generation The use of the ecoTEC in vehicles such as mobile hom...

Страница 7: ...corrosion on the boiler and also on the air flue gas duct note the following Do not use sprays solvents chlorinated cleaning agents paint adhesives or similar substances in the vicinity of the boiler...

Страница 8: ...sual location special procedures may be necessary and BS 5546 and BS 6798 give detailed guidance on this aspect The boiler must be mounted on a flat vertical wall which must be suf ficiently robust to...

Страница 9: ...ssary with this appliance as the very small expansion volume is unlikely to heat the incoming service pipe above 25 Deg C Note that where back flow prevention devices are fitted this may include water...

Страница 10: ...02 2 0 200 to 600 1 5 150 0 02 2 0 0 02 2 0 600 0 02 2 0 0 02 2 0 0 02 2 0 1 on systems with circulation water heaters and for systems with electric heating elements 2 from the specific system volume...

Страница 11: ...Fan 10 Automatic air vent 11 Pressure gauge 12 Internal pump 13 Expansion relief valve 14 Electronics box 15 By pass valve 5 6 7 8 11 9 10 12 13 15 4 3 1 2 18 17 16 14 3 2 Functional elements of the V...

Страница 12: ...omDIALOG Accessories VR 65 Control Centre VR 66 Control Centre VR 61 2 Two Zone Wiring Centre VR 81 2 Remote Control Unit VR 68 2 Solar Module 4 1 Controller accessories Note 392f RF transmitter wired...

Страница 13: ...are used keep back straight bend using legs Keep load as close to body as possible Do not twist reposition feet instead If 2 persons performing lift ensure co ordinated move ments during lift Avoid up...

Страница 14: ...cess stability of flooring lighting and other factors and appropriate measures taken Unpacking of appliance from carton Recommend 2 persons unpack appliance from carton Always keep working area clear...

Страница 15: ...f boiler Ensure co ordinated movements during 2 person lifts to ensure equal spread of weight of load If 1 person positioning onto bracket recommend obtain firm grip supporting base of boiler Ensure s...

Страница 16: ...ate vertically over the instal lation site Attach the template to the wall using tacks for example Mark the drill holes for the hanging bracket on the wall If necessary mark the position for the wall...

Страница 17: ...ow 22 x 1 5 4 Hot water connection 15 x 1 5 5 Gas connection 15 x 1 5 6 Cold water connection 15 x 1 5 7 Heating return 22 x 1 5 8 Air flue gas duct connection 9 Condensate trap 10 Condensate discharg...

Страница 18: ...t 1 on the wall using the wall plugs and screws 2 provided with the unit Hang the boiler 3 on the hanging bracket from above using the hanging bracket 4 7 Removing fitting the front casing 2 1 4 6 Rem...

Страница 19: ...only remove one side panel never both side panels at the same time 1 3 4 2 4 7 Removing fitting the side panel b Caution Risk of damage to the side panel Unscrewed side panels that are merely sus pen...

Страница 20: ...ssure at the gas valve must not exceed 0 75 kPa 75 mbar b Caution Risk of damage caused by contaminated lines Foreign bodies such as welding remnants sealing residue or dirt in the supply lines for ga...

Страница 21: ...ses in the supply line can cause leaks Make sure there are no stresses in the supply lines when they are installed b Caution Risk of damage caused by heat transfer when soldering Heat that is transfer...

Страница 22: ...can be accommodated with the cold supply pipe work section 2 4 7 6 3 Connecting the domestic hot water cylinder When connecting the domestic hot water cylinder to the ecoTEC follow the installation in...

Страница 23: ...ich has a minimum internal diameter of 19 mm 22 mm outside diameter for all external pipes and is made from an acid resistant material e g plastic overflow pipe i The condensate drain pipework must ha...

Страница 24: ...ible and slop ing away from the boiler Allow the line to terminate in such a way that nobody can be injured and no cable or other electrical compo nents can be damaged if water or steam is ejected Not...

Страница 25: ...plus 630 7 1 Reference types for the air flue gas systems All ecoTEC boilers feature a 60 100 mm diameter air flue gas connection as standard Selecting the most suitable system depends on the individu...

Страница 26: ...er vapour will sometimes be visible from the flue terminal Positions where this could be a nuisance should be avoided c If the terminal is fitted less than 2 m above a balcony above ground or above a...

Страница 27: ...the roof N A Q Above intersection with roof 300 mm R Horizontally to a window or opening on pitched or flat roofs 600 mm S Above a window or opening on pitched or flat roofs 600 mm T Below a window or...

Страница 28: ...Flue gas installation 28 Installation and maintenance instructions ecoTEC 0020173113_01 7 7 6 Termination of air flue gas duct under balcony or eaves...

Страница 29: ...ng closing the electronics box Opening the electronics box Remove the front casing from the boiler section 4 7 1 2 3 4 8 1 Opening the back wall of the electronics box Fold the electronics box 1 forwa...

Страница 30: ...oiler and its ancil lary controllers It should be readily accessible and adjacent to the boiler A flexible cord fulfilling BS6500 or compara ble standard conductor diameter between 0 75 and 1 5 mm2 an...

Страница 31: ...erature control to the boiler then remove the bridge at input 24 V RT X100 or X106 if a bridge exists If you connect a weather compensator or room tempera ture control via eBUS then bridge input 24 V...

Страница 32: ...X106 2 3 11 6 1 Internal pump Ignition electrode Mains connection Appliance earth X18 X1 variant dependent 230 V AC room thermostat No function 24 V PWM Earth Hall signal Diverter valve 1 3 4 red Flow...

Страница 33: ...8 15 13 12 2 X20 X41 X106 2 3 11 6 1 Internal pump Ignition electrode Mains connection Appliance earth X18 X1 variant dependent 230 V AC room thermostat No function 24 V PWM Earth Hall signal 1 3 4 r...

Страница 34: ...taller level can cause damage to the heating installation You should only access installer level if you are an approved competent person Installer level is secured against unauthorised access with a p...

Страница 35: ...valve again once you are requested to do so section 10 10 Press the on off button Operating instructions The basic display appears on the display 10 2 Using test programs You can call up the test prog...

Страница 36: ...in after the filling process is complete If the local Water Authority regulations do not allow temporary connection a sealed system filler pump with break tank must be used The heating system will not...

Страница 37: ...program Check all connections for leaks 10 5 3 Flushing the system for the first time cold i The entire heating system must be flushed through completely at least twice once cold and once hot in acco...

Страница 38: ...e implementing the conversion measures the boiler must be fully installed The heating installation has been filled and purged The gas valve on the boiler remains closed Switch off the power supply to...

Страница 39: ...t the gas ratio setting works properly with these units the correct energy source repre sentative CO2 max value must be set For this liq uid gas LPG must be selected as the energy source 1 2 10 7 Meas...

Страница 40: ...Only perform the adjustment in small increments approxi mately 1 4 turns and wait approximately 1 min ute after each adjustment until the value stabi lises Settings Unit Gas used on the Channel Island...

Страница 41: ...ces in the property are turned off Measure the gas flow rate at the gas meter Check that the gas flow rate is as stated in table 10 4 If the measured gas flow rate lies outside the tolerance lim its s...

Страница 42: ...controller 10 14 Final flush of the heating system hot Operate the appliance until the boiler and the heating system are up to temperature Check the heating system for leaks Connect a hose to the dra...

Страница 43: ...er to the heating installation and the needs of the customer i You can enter your settings in the last column after setting the system specific parameters Switch to the installer level section 9 2 and...

Страница 44: ...m thermostat closed heat requirement Not adjusta ble D 009 Target value from external eBus con troller in C Not adjusta ble D 010 Status of internal pump 1 on 0 off Not adjusta ble D 011 Status of ext...

Страница 45: ...00 Hot water 40 Mid position Not adjustable D 036 Hot water flow quantity impeller sensor In l min Not adjustable D 039 Solar feed temperature Actual value in C Not adjustable D 040 Flow temperature A...

Страница 46: ...t adjustable D 078 Limit on cylinder charging temperature in C Not relevant Not adjustable D 080 Operating hours heating In hours h Not adjustable D 081 Operating hours hot water generation In hours h...

Страница 47: ...demand the pump is switched on every 25 minutes for 5 minutes once the overrun time has elapsed 11 1 3 Setting the maximum flow temperature The maximum flow temperature for the heating is set at the f...

Страница 48: ...ppears in the display and this shows that the boiler must be serviced The display on the eBUS controller accessory shows the information Maintenance MAIN Heat demand Number of persons Burner operating...

Страница 49: ...ndling and function of the ecoTEC Explain the importance of regular maintenance by a competent skilled trade company to the operator It is strongly recommended that a maintenance contract be taken out...

Страница 50: ...accordance with BS 7967 parts 1 to 4 The flue gas analyser is set to the correct fuel setting We recommend the conclusion of an inspection and mainte nance contract with an approved company or instal...

Страница 51: ...lug or de energising the boiler via an isolating device with a contact opening of at least 3 mm e g fuses or power switches Further check for electrical isolation of the appliance by use of a test met...

Страница 52: ...es is greater than the acceptable values in table 12 1 then Check the integrity of the complete flue gas installation Check the integrity of the combustion circuit seals Check the gas inlet working pr...

Страница 53: ...front casing removed Vol 10 2 0 3 Set for Wobbe index Ws kWh m3 6 6 CO value with full load ppm 250 CO CO2 0 0026 12 1 Target values for the gas ratio setting a Danger Risk to life due to poisoning C...

Страница 54: ...cuit seals especially the burner door seal Ensure any damage found is repaired before proceeding x 12 Clean the heat exchanger section 12 3 2 x 13 Check whether the burner is dirty and clean it if nec...

Страница 55: ...the top to the bottom Once the water has drained off close the purging valves of the radiators and the drain cock 12 3 Carrying out maintenance work 12 3 1 Removing the compact thermal module a Dange...

Страница 56: ...gns of damage other than small cracks are apparent you must replaced it article number 193 595 12 3 2 Cleaning the heat exchanger b Caution Risk of damage from water spray If you fail to protect the e...

Страница 57: ...pper edge Re fit the lower part of the condensate trap Flush through all discharge pipe work ensure route and termination are correct and it is unlikely to freeze up in severe weather 12 3 5 Cleaning...

Страница 58: ...fig 12 10 and the ground connection 9 fig 12 10 to the ignition electrode Attach the plug 5 fig 12 10 to the fan motor Attach the plug 8 fig 12 10 to the gas valve 12 11 Secure the gas pipe against t...

Страница 59: ...gen otherwise with air Ensure drain valve on boiler is open during topping up If water escapes from the measuring stub pipes 1 of the expansion vessel you must replace the expansion vessel 12 4 Checki...

Страница 60: ...ode 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...

Страница 61: ...t occurs the display no longer shows the current heating flow temperature of the heating installation If multiple faults occur at the same time the display shows the corresponding fault codes for two...

Страница 62: ...ruption in cable harness gas valve stepper motor defective electronics defective F 27 Safety switch off Flame simulation Moisture on the electronics electronics flame monitor defective gas solenoid va...

Страница 63: ...imary heat exchanger or primary heat exchanger defective F 77 Flue non return flap condensate pump fault No response from flue non return flap or condensate pump defective F 78 Interruption to DHW out...

Страница 64: ...ollowing instructions for your own safety and to avoid material dam age to the boiler Switch off the boiler Disconnect the boiler from the power mains sec tion 11 3 Remove the front casing section 4 7...

Страница 65: ...14 3 only loosely to the gas valve Only tighten the cap nut on the gas valve after complet ing the installation work Refit the entire fan gas valve unit in reverse order You must use a new seal for t...

Страница 66: ...om each of the two brackets of the heat exchanger 1 1 2 3 14 7 Heat exchanger brackets Disconnect the plug connection 2 fig 14 7 of the thermal fuse in the heat exchanger Remove the bottom three screw...

Страница 67: ...lay i Comply with the assembly and installation instructions provided with the spare parts 14 6 1 Replacing either the display or the PCB Replace the PCB or display according to the assembly and insta...

Страница 68: ...e boiler The Vaillant ecoTEC boiler consists primarily of materials that can be recycled The boiler and its accessories must not be disposed of with household waste Make sure that the boiler and any e...

Страница 69: ...at DT 30 K l min 13 Permitted overpressure MPa bar 1 0 10 0 Required connection pressure MPa bar 0 035 0 35 Hot water output temperature range C 35 65 General Boiler side gas connection mm 15 Flow re...

Страница 70: ...the fuel The flue gas is cooled until the water vapour that it contains condenses The condensation heat that this releases can also be used In particular the flue gas losses are greatly reduced The lo...

Страница 71: ...Appendix Installation and maintenance instructions ecoTEC 0020173113_01 71 19 19 Appendix Installation Commissioning and Service Record...

Страница 72: ...Appendix 72 Installation and maintenance instructions ecoTEC 0020173113_01 20 Please affix the label from the rear cover of the control box over this area...

Страница 73: ...lephone Number Engineer ID Number Comments Signature SERVICE 7 Date Energy Efficiency Checklist completed Yes No Engineer Name Company Name Telephone Number Engineer ID Number Comments Signature SERVI...

Страница 74: ...w and return 22 Gas line 20 Multi functional module 31 Connection diagram 32 Connection measurements 17 Customer service 68 D Diagnosis codes 43 44 45 46 DIA system 70 Disposal Boiler 68 Packaging 13...

Страница 75: ...ting installation 37 R Removing Burner 64 Compact thermal module 55 Display 67 Fan 64 Front casing 18 Heat exchanger 66 PCB 67 Side panel 19 Repair 64 Replacement parts 64 Reset 61 S Setting Burner an...

Страница 76: ...0020173113_01 Channel Islands 082013 Subject to change Manufacturer Supplier...

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