Viessmann VITOTRONIC 300-K Service Manual

VITOTRONIC 100, GC1VITOTRONIC 300-K, MW1SInstallation andService Instructionsfor use by heating contractorVitotronic 100, Model GC1Digital boiler cont

10Heating system designsSystem version 1 (cont.)Codings must be set on every Vitotronic 100, GC1.Vitotronic 100, GC1Required coding01: 2 Multi-boiler

100Troubleshooting – Vitotronic 300-K, MW1SFaults displayed at the programming unit (cont.)Fault display in plain textExt. faultOutdoor temperature

101Troubleshooting – Vitotronic 300-K, MW1SFaults displayed at the programming unit (cont.)FaultcodeSystem characteristicsCause Remedy44440000Mixing v

102Troubleshooting – Vitotronic 300-K, MW1SFaults displayed at the programming unit (cont.)FaultcodeSystem characteristicsCause Remedy77770000Shunt pu

103Troubleshooting – Vitotronic 300-K, MW1SFaults displayed at the programming unit (cont.)FaultcodeSystem characteristicsCause RemedybbbbccccControl

104Troubleshooting – Vitotronic 300-K, MW1SFaults displayed at the programming unit (cont.)FaultcodeSystem characteristicsCause RemedyddddaaaaControl

105Troubleshooting – Vitotronic 300-K, MW1SViewing fault codes from the fault memory (error history)1. Press rw and simultaneouslyfor approx. 2 second

106Function description – Vitotronic 100Boiler temperature controlBrief descriptionThe boiler water temperature isregulated by controlling a two stage

107Function description – Vitotronic 300-K, MW1SCascade control unitBrief descriptionThe supply temperature is regulated bystarting or stopping the bu

108Function description – Vitotronic 300-K, MW1SCascade control (cont.)Control sequenceStand-alone (Autonomous) type of control sequenceParallel boile

109Function description – Vitotronic 300-K, MW1SCascade control (cont.)Sequential type of control sequence(coding 3b : 4)With the sequential type of c

11Heating system designsSystem version 2Common supply pump and low pressure distribution manifoldVitorond 200A Boiler with Vitotronic 100, GC1B Vitotr

110Function description – Vitotronic 300-K, MW1SCascade control (cont.)Net calorific strategy 1Conventional boilers are preferablyoperated at their up

111Function description – Vitotronic 300-K, MW1SCascade control (cont.)Control strategy exampleTwo boiler system with modulating burner:Boiler 1: 100

112Function description – Vitotronic 300-K, MW1SCascade control (cont.)Net calorific strategy 2 (coding 3C : 2)Start-up Switching OFFBoiler sequenceTh

113Function description – Vitotronic 300-K, MW1SHeating circuit controlBrief descriptionThe control unit provides controlcircuits for one high tempera

114Function description – Vitotronic 300-K, MW1SHeating circuit control (cont.)Domestic hot water temperatureWith priority control:The set supply tem

115Function description – Vitotronic 300-K, MW1SHeating circuit control (cont.)Extended economy circuitThe heating circuit pump is switchedOFF, and th

116Function description – Vitotronic 300-K, MW1SHeating circuit control (cont.)Supply temperature controlDifferential temperature:The differential tem

117Function description – Vitotronic 300-K, MW1SDHW tank temperature controlBrief descriptionThe DHW tank control logic is aset-point control. It is t

118Function description – Vitotronic 300-K, MW1SDHW tank temperature control (cont.)Control sequencePump delayThe DHW pump continuous operation(codin

119Components – Vitotronic 300-K, MW1SComponents from the parts listPower supply module A1Cascade ekectronics module A2With PCB.Microprocessor with so

12Heating system designsSystem version 2 (cont.)Coding must be set on every Vitotronic 100, GC1.Vitotronic 100, GC1Required coding01: 2 Multi-boiler s

120Components – Vitotronic 300-K, MW1SFuseF1 T4 A, 250 V,max. power loss x 1.6 WA1 Power supply module5581 750 v1.3F1A1

121Components – Vitotronic 100, GC1Components from the parts listLON communication modulePlug in the LON communication module into the controlunit. Th

122Components – Vitotronic 100, GC1Components from the parts list (cont.)Boiler water temperature sensorThe sensor measures the boiler watertemperatur

123Components – Vitotronic 100, GC1Components from the parts list (cont.)Strap-on temperature sensor and immersion temperature sensorFor measuring the

124Components – Vitotronic 100Flue gas temperature sensorThe sensor measures the flue gastemperature and monitors the selectedlimit value.Electrical c

125Components – Vitotronic 300-K, MW1SComponents from the parts list (cont.)DHW tank temperature sensorConnectionSee page 58 and 59.Check sensor1. Rem

126Components – Vitotronic 300-K, MW1SComponents from the parts list (cont.)Strap-on temperature sensor and immersion temperature sensorTo measure the

127Components – Vitotronic 300-K, MW1SComponents from the parts list (cont.)Outdoor temperature sensorConnectionSee page 58 and 59.Check sensor1. Remo

128Components – Vitotronic 300-K, MW1SMixing valve circuit extension kit, part no. 7450 650Mixing valve motor, part no. 7133 390A Plug in the mixing v

KRHVKVHRHRKVHVKRHVKVHRKRHVKVHRKVHVHRHRHVKRKVHVHRKRKVHVKVHRKR129Components – Vitotronic 300-K, MW1SInstallation examplesMixing valve insert conversion

13Heating system designsSystem version 2 (cont.)Possible applicationsIf the distribution manifold is located ina remote location (> 20 m / 65 ft).

130Components – Vitotronic 300-K, MW1SRemote controlVitotrol 200, part no. 7450 017(with integral room temperature sensor for room temperature feed-ba

131Components – Vitotronic 333, MW1SRemote control (cont.)D Printed Circuit Board DIP switches(rear of the top casing)Remote controlaffectsDIP switchs

132Components – Vitotronic 300-K, MW1SRemote control (cont.)Vitotrol 300, part no. 7450 790 or 7179 060(with integral room temperature sensor for room

133Components – Vitotronic 300-K, MW1SRemote control (cont.)D Printed Circuit Board DIP switches(rear of the top casing)Remote controlaffectsDIP switc

134Components – Vitotronic 300-K, MW1SRemote control (cont.)Connecting several remote control unitsWhen connecting several remote controls to the cont

135Components – Vitotronic 300-K, MW1SRemote control (cont.)Version 2A To control unitB Terminal box (on site)C Vitotrol 1D Vitotrol 2E Vitotrol 3F Fu

136Components – Vitotronic 300-K, MW1SRoom temperature sensor, part no. 7408 012The room temperature sensor measures the actual room temperature, if t

137Components – Vitotronic 300-K, MW1SInput Module 0 to 10 V, part no. 7134 561From software version 7 of Vitotronic 300-K, MW1S, the Input Module can

138Coding – Vitotronic 100, GC1Coding 1Calling up coding 11. Press 9 and w simultaneouslyfor approx. two seconds, until thefirst arrow appears in the

139Coding – Vitotronic 100, GC1Coding 1 (cont.)Coding in the factory setting Possible changeBoiler/burner06: 87 Maximum boiler water temperature limit

14Heating system designsSystem version 3Controlling the return temperature with a 3-way mixing valveVitorond 200A Boiler with Vitotronic 100, GC1B Vit

140Coding – Vitotronic 100, GC1Coding 2Calling up coding 21. Press w and rw simultaneouslyfor approx. 2 seconds, until the firsttwo arrows appear in t

141Coding – Vitotronic 100, GC1Coding 2 (cont.)Coding in the factory setting Possible changeBurner (mod.) (see page 79)05: 70 Burner curve 05: 0 Linea

142Coding – Vitotronic 100, GC1Coding 2 (cont.)Coding in the factory setting Possible changeBoiler0C: 5Isolation valve modulating independentlyofsetbo

143Coding – Vitotronic 100, GC1Coding 2 (cont.)Coding in the factory setting Possible changeBurner (two stage/mod.)16:*1Burner offset in ˚C / ˚Ftempor

144Coding – Vitotronic 100, GC1Coding 2 (cont.)Coding in the factory setting Possible changeBoiler/burner24: 0 No maintenance indication 24: 1 Mainten

145Coding – Vitotronic 100, GC1Coding 2 (cont.)Coding in the factory setting Possible changeGeneral (cont.)2C: 5Maximum time delay of isolation valve

146Coding – Vitotronic 100, GC1Coding 2 (cont.)Coding in the factory setting Possible changeGeneral4E: 0 Connection on plug gS:Isolation valve or thre

147Coding – Vitotronic 100Burner switching differentialFor adjustment, see coding 04 on page 140.Switching differential 4 ˚C / 7 ˚F (coding 04 : 0)Hea

148Coding – Vitotronic 300-K, MW1SCoding 1Calling up coding 11. Press 9 and w simultaneouslyfor approx. 2 seconds.2. Select the required coding addres

149Coding – Vitotronic 300-K, MW1SCoding 1 (cont.)Coding in the factory setting Possible changeMulti-boiler control unit36: 0 Electronic minimum syste

15Heating system designsSystem version 3 (cont.)Coding must be set on every Vitotronic 100, GC1.Vitotronic 100, GC1Required coding01: 2 Multi-boiler s

150Coding – Vitotronic 300-K, MW1SCoding 1 (cont.)Coding in factory setting Possible changeGeneral (cont.)77: 5 LON participant number 77: 1to77: 99LO

151Coding – Vitotronic 300-K, MW1SCoding 2The summary from page 152 lists all possible coding addresses.The coding addresses are grouped inaccordance

152Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Overall summaryCoding in the factory setting Possible changeSystem design00: 1 See page 148Multi-boi

153Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in the factory setting Possible changeMulti-boiler control (cont.)3b: 1 Autonomous boiler par

154Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in the factory setting Possible changeMulti-boiler control unit41: 31 No ECO threshold boiler

155Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeMulti-boiler control (cont.)48: 35 Only for sequential type

156Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in the factory setting Possible changeDHW54: 0 Without solar control unit 54: 1 With Vitosoli

157Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeDHW (cont.)64: 2 During party mode and after externalchange

158Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeGeneral76: 0 Without communication module 76: 1 With LON co

159Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeGeneral (cont.)82: 3 Daylight saving time starts:March82: 1

16Heating system designsSystem version 4Controlling the return temperature with a low loss header and a three-way mixing valveVitorond 200A Boiler wit

160Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeGeneral (cont.)94: 0 Without plug-in adaptor for external s

161Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeGeneral (cont.)9A: 0Connection to terminals 1 and 2 in plug

162Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeSystem circuit/mixing valve circuitA0: 0 Without remote con

163Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeSystem circuit/mixing valve circuit (cont.)A5: 5With heatin

164Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeSystems/mixing valve circuitb0: 0*1With remote control:Heat

165Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeSystems/mixing valve circuit (cont.)b8:10*1With remote cont

166Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeMixing valve circuitC4: 1 System dynamics – mixing valve co

167Coding – Vitotronic 300-K, MW1SCoding 2 (cont.)Coding in factory setting Possible changeMixing valve circuitF1: 0 Slab curing function inactive F1:

168Coding – Vitotronic 300-K, MW1SSlab curing function diagramCoding, see page 167.Temperature-time profile 1 (coding F1 : 1)(See back of manual for t

169Connection and wiring diagrams – Vitotronic 100, GC1SummaryA2 Low voltage motherboardA3 Line voltage motherboardA6 Programming unitA7 Optolink Prin

17Heating system designsSystem version 4 (cont.)Coding must be set on every Vitotronic 100, GC1.Vitotronic 100, GC1Required coding01: 2 Multi-boiler s

170Connection and wiring diagrams – Vitotronic 100, GC1Low voltage motherboard§ Boiler temperature sensor% No functionaG Flue gas temperature sensoraJ

171Connection and wiring diagrams – Vitotronic 100, GC1Line voltage motherboardsÖ Control outputsA DHW pumpsL Shunt or boiler circuit pumpfÖ Power sup

172Connection and wiring diagrams – Vitotronic 100. GC1Line voltage motherboard (cont.)5581 750 v1.3A11A3floatingONON

173Parts List – Vitotronic 300-K, MW1SParts list Vitotronic 300-K, MW1SWhen ordering spare partsQuote the part and serial no. (see type plate) and the

174AppendixSpecification – Vitotronic 100, GC1Rated voltage: 120VACRated frequency: 60 HzRated current: 2 × 6 A~Powerconsumption: 5 WSafety class: IPr

175AppendixSpecification – Vitotronic 300-K, MW1SRated voltage: 120VACRated frequency: 60 HzRated current: 4APowerconsumption: 10 WSafety class: IProt

Viessmann Manufacturing Company Inc.750 McMurray RoadWaterloo, Ontario • N2V 2G5 • CanadaTel. (519) 885-6300 • Fax (519) 885-0887www.viessmann.ca • ma

18Heating system designsSystem version 5Heating circuit and one low temperature heating circuitVitocrossal 300A Boiler with Vitotronic 100, GC1B Vitot

19Heating system designsSystem version 5 (cont.)Codings must be set on every Vitotronic 100, GC1.Vitotronic 100, GC1Required coding01: 2 Multi-boiler

General information2Safety, Installation and Warranty RequirementsPlease ensure that this manual is read and uderstood before commencing installation.

20Heating system designsSystem version 5 (cont.)Possible applicationsVitocrossal 300 is operated via aViessmann boiler control unit withoutdoor reset

21Heating system designsSystem version 6Heating circuit and one low temperature heating circuit plus Vitorond with shunt pumpVitocrossal 300Vitorond 2

22Heating system designsSystem version 6 (cont.)Coding must be set on every Vitotronic 100, GC1.Vitotronic 100, GC1Required coding01: 2 Multi-boiler s

23Heating system designsSystem version 6 (cont.)Possible applicationsThe Vitocrossal 300 (lead boiler) and the Vitorond 200 (lag boiler) are operated

24Heating system designsSystem version 7Three-way mixing valve, several heating circuits and one low temperature heating circuitVitocrossal 300Vitoron

25Heating system designsSystem version 7 (cont.)Coding must be set on every Vitotronic 100, GC1.Vitotronic 100, GC1Required coding01: 2 Multi-boiler s

26Heating system designsSystem version 7 (cont.)Vitotronic 300-K, MW1SRequired coding00: 3,00: 4,00: 7,or00: 8Without system circuit A1*135: 135: 235:

27Installation – Vitotronic 100, GC1Summary of electrical connectionsLow voltage connections (motherboard)§ Boiler temperature sensor% No functionaG F

28Installation – Vitotronic 100, GC1Summary of electrical connections (cont.)5581 750 v1.3External line voltage connections

29Installation – Vitotronic 100, GC1Inserting cables and applying strain reliefRun the cables from the connection enclosure into the control unit.Appl

3ContentsIndexPageGeneral informationProduct information 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30Installation – Vitotronic 100, GC1Inserting the boiler coding cardOnly use the boiler coding card included with the boiler.Boiler Coding card Part n

31Installation – Vitotronic 100, GC1Setting of the fixed high limit (if required)Settings on the control unitThe setting for the fixed high limit andt

32Installation – Vitotronic 100, GC1Setting of the adjustable high limit (if required)The adjustable high limit is supplied with a factory setting of

33Installation – Vitotronic 100, GC1Connection of the boiler temperature sensorThe sensor measures the boiler watertemperature of the boiler.The boile

34Installation – Vitotronic 100, GC1Connection of the return temperature sensorStrap-on temperature sensor and immersion temperature sensorFor measuri

35Installation – Vitotronic 100, GC1Connection of the flue gas temperature sensorThe sensor measures the flue gastemperature and monitors the selected

36Installation – Vitotronic 100, GC1Connection of the pumpsAvailable pump connectionssL Shunt pump, boiler circuit pumpTerminals 6 - L, - G, - N in li

37Installation – Vitotronic 100, GC1Connection of boiler return mixing valve or isolation / modulating valve actuator1 120V or 24V Valve Adaptor2 DIN

38Installation – Vitotronic 100, GC1Connection of external controlsABoiler disableConnect dry contact at terminals “1”and “2” of the plug aVD.Contact

39Installation – Vitotronic 100, GC1Connection of the low water cut-off deviceaBH Power supply for accessories,120 VACaBÖ Connection for external safe

4ContentsIndex (cont.)Installation – Vitotronic 300-K, MW1SInstalling modules 56. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

40Installation – Vitotronic 100, GC1Connection of combustion air devicesConnection of the Combustion AirDevice Adaptor1.Disconnect power to control an

41Installation – Vitotronic 100, GC1Connection of combustion air devices (contd.)Connection of the combustion airdamperSee damper manual for correctin

42Installation – Vitotronic 100, GC1Connection of single combustion air devices on mulitple boiler systemIf a single combustion air device isrequired

43Installation – Vitotronic 100, GC1Connection of single combustion air devices on mulitple boiler systemConnection of the combustion airblowerA Commo

44Installation – Vitotronic 100, GC1Connection of single combustion air damperConnection of the combustion airdamperA Common Combustion Air DeviceInte

45Installation – Vitotronic 100, GC1Connection of the compiled failure alarmRated voltage: 120 VAC 60 HzRated current: max. 2 FLARecommended connectio

46Installation – Vitotronic 100, GC1Plugging in the LON communication modulePlug in the LON communication moduleinaccordance with the illustration int

47Installation – Vitotronic 100, GC1Burner connection, burner control wiringFor burners with plug-in connectionThe burner cables are included in thest

48Installation – Vitotronic 100, GC1Burner connection, burner control wiring (continued)Caution!This is a generic connection drawing only! Follow the

49Installation – Vitotronic 100, GC1Burner connection, burner control wiring (continued)Burner motor power supply connectionFor burners with 120 VAC,

5ContentsIndex (cont.)Function description – Vitotronic 300-K, MW1SCascade control unit 107. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

50Installation – Vitotronic 100, GC1Burner connection, burner control wiring (continued)Burner motor power supply connectionFor burners with 120 VAC,

51Installation – Vitotronic 100, GC1Burner connection, burner control wiring (continued)Burner motor power supply connectionFor burners with 240 VAC,

52Installation – Vitotronic 100, GC1Burner connection, burner control wiring (continued)Burner motor power supply connectionFor burners with 3PH 208,

53Installation – Vitotronic 100, GC1Connection to power supply1. Ensure that the main power supplyto the control contains overcurrentprotection with a

54Installation – Vitotronic 100, GC1Installing the control unit front1. Position the front part of the housingand clip hinges to counter-parts onmain

55Installation – Vitotronic 100, GC1Opening the control unit1. Remove the cover of the connectionenclosure.2. Unscrew the screws from the fronthousing

A4 A3A1 A256Installation – Vitotronic 333, MW1SInstalling modulesA1 Power supply moduleA2 Cascade electronic moduleA3 Power moduleA4 Extension module1

57Installation – Vitotronic 333, MW1SInstalling the programming unit (cont.)5581 750 v1.31393051291.2.318X1X2X104.

58Installation – Vitotronic 300-K, MW1SSummary of electrical connections5581 750 v1.3F1 4A(slow)

59Installation – Vitotronic 333, MW1SSummary of electrical connections5581 750 v1.3

6ContentsIndex (cont.)Coding – Vitotronic 300-K, MW1SResetting codings to the factory setting 147. . . . . . . . . . . . . . . . . . . . . . . . . . .

60Installation – Vitotronic 300-K, MW1SSummary of electrical connectionsA1 Power supply modulefÖ Power supply connectionA2 Cascade electronic module!

61Installation – Vitotronic 300-K, MW1SSensor connection (continued)Outdoor temperature sensorThe outdoor temperature sensor should be mounted 2 to 2.

62Installation – Vitotronic 300-K, MW1SSensor connection (continued)Strap-on temperature sensor and immersion temperature sensorFor measuring the supp

63Installation – Vitotronic 300-K, MW1SSensor connection (continued)Strap-on temperature sensor and immersion temperature sensorFor measuring the retu

64Installation – Vitotronic 300-K, MW1SSensor connection (continued)DHW tank temperature sensorThe sensor measures the domestic hotwater tank temperat

65Installation – Vitotronic 300-K, MW1SConnection of the pumpsAvailable pump connectionssÖ Heating circuit pump or common supply pump, DHW tank loadin

66Installation – Vitotronic 300-K, MW1SConnection of external contactsImplement the connection aVD/aVH onA2 in accordance with the overview onpage 58

67Installation – Vitotronic 300-K, MW1SConnection of the compiled failure alarmImplement the connection inaccordance with the overview onpage 58 and 5

68Installation – Vitotronic 300-K, MW1SMaking the LON connectionThe Viessmann LON system is designed for the Line BUS topology with end of line resist

69Installation – Vitotronic 300-K, MW1SMaking the LON connection (cont.)Connection withViessmann LON cable,on-site cable for extensions up to

7General informationProduct informationVitotronic 100, GC1, and Vitotronic 300-K, MW1SOnly for integration/installation on Viessmann boilers and for c

70Installation – Vitotronic 300-K, MW1SPower supplyImplement the connection inaccordance with the overview onpage 58 and 59 and control panelwiring di

71Initial start-upStepsPage1. Checking the heating circuit allocation (Vitotronic 300-K, MW1S)...

72Initial start-upFurther step-by-step instructionsChecking the heating circuit allocation (Vitotronic 300-K, MW1S)Check whether the label for heatin

73Initial start-upFurther step-by-step instructions (cont.)Connecting control units to the LON systemThe LON communication module must be plugged in (

74Initial start-upFurther step-by-step instructions (cont.)Updating the LON particpant list on Vitotronic 300-K, MW1SOnly possible if all participants

75Initial start-upFurther step-by-step instructions (cont.)Example of a multi-boiler systemParticipant no. 1Coding77 : 1Participant no. 2Set coding77

76Initial start-upFurther step-by-step instructions (cont.)Carrying out a participant check (Vitotronic 300-K, MW1S)The communication with the system

77Initial start-upFurther step-by-step instructions (cont.)Matching coding addresses to respective system versionVitotronic 100In coding 1, set the fo

78Initial start-upFurther step-by-step instructions (cont.)Matching the control unit to a two stage burner (Vitotronic 100, GC1)1. Start up the burner

79Initial start-upFurther step-by-step instructions (cont.)Matching the control unit to a modulating burner (Vitotronic 100, GC1)Please note:The burne

8General informationSummary of system versionsBoiler Characteristics Page1 Vitorond Shunt pump for controlling return temperature for each boiler 92 V

80Initial start-upFurther step-by-step instructions (cont.)Checking outputs (actuators) and sensorsVitotronic 100Relay test1. Press 9 andsimultane

81Initial start-upFurther step-by-step instructions (cont.)Vitotronic 300-K, MW1SRelay test1. Press 9 and simultaneously forapprox. two seconds.2. Se

Slope2.22.01.81.61.41.21.00.80.60.40.23.43.23.02.82.62.4110/230100/21270/15860/14050/12240/10430/8680/17690/1941050541032-523-20-4-1014-155Supply temp

83Initial start-upFurther step-by-step instructions (cont.)Changing slope and shift(for every heating circuit separately)1. Call up slope with ,adjust

84Initial start-upFurther step-by-step instructions (cont.)Adjusting the normal room temperature(for every heating circuit separately)Normal room temp

85Service scanning – Vitotronic 100, GC1Service level summaryFunction Entry Exit PageRelay test Press the 9 and “OK”buttons simultaneously forapprox.

86Service scanning – Vitotronic 100, GC1Temperatures, boiler coding card and brief scans1. Press 9 and rw simultaneouslyfor approx. two seconds.2. Sel

87Service scanning – Vitotronic 100, GC1Temperatures, boiler coding card and brief scans (cont.)ScansF8 8 8 8 80000LON participant number Software ver

88Service scanning – Vitotronic 100, GC1Scanning operating conditions1. Press .2. Select the required operatingcondition scan with or .3. Press .The f

89Service scanning – Vitotronic 100, GC1Scanning and resetting maintenance displaysAfter limits have been reached, which were set up via coding addres

9Heating system designsSystem version 1Return temperature control of each boiler with shunt pumpVitorond 200A Boiler with Vitotronic 100, GC1B Vitotro

90Service scans – Vitotronic 300-K, MW1SService level summaryFunction Entry Exit PageAdjusting displaycontrastPress the “OK” and “+”buttons simultaneo

91Service scans – Vitotronic 300-K, MW1STemperatures and brief scans1. Press 9 and rw simultaneouslyfor approx. 2 seconds.2. Select the required scanw

92Service scans – Vitotronic 300-K, MW1STemperatures and brief scans (cont.)8N/ASoftware versionPlug-in adaptorfor ext. safetyequipmentSoftware versio

93Service scans – Vitotronic 300-K, MW1SScanning operating conditions1. Press .2. Select the required scanwith or .3. Press.The following values can b

94Service scans – Vitotronic 300-K, MW1SScanning and resetting maintenance displayVitotronic 300-K, MW1S displays a maintenance message if:Vitotronic

95Troubleshooting – Vitotronic 100, GC1Faults displayed at the programming unit1 Consecutive fault number38 Fault codeU Fault symbolee External fault/

96Troubleshooting – Vitotronic 100, GC1Faults displayed at the programming unit (cont.)FaultcodeSystem characteristicsCause Remedy0000ffffControl mode

97Troubleshooting – Vitotronic 100, GC1Faults displayed at the programming unit (cont.)FaultcodeSystem characteristicsCause Remedybbbb8888Control mode

98Troubleshooting – Vitotronic 100, GC1Viewing fault codes from the fault memory (error history)1. Press rw and simultaneouslyfor approx. 2 seconds.2.

99Troubleshooting – Vitotronic 300-K, MW1SFaults displayed at the programming unitDBGU Fault symbol2 Consecutive number (1 to 10)d5 Fault code (for ex