Viessmann VITOTRONIC 200 Service Instructions Manual

Viessmann VITOTRONIC 200 Service Instructions Manual

Vitotronic 200 type wo1a heat pump control unit
Table of Contents

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VIESMANN
Service instructions
for contractors
Vitotronic 200
Type WO1A
Heat pump control unit
For applicability, see the last page
VITOTRONIC 200
Please keep safe.
5692 861 GB
8/2010

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Table of Contents
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Summary of Contents for Viessmann VITOTRONIC 200

  • Page 1 VIESMANN Service instructions for contractors Vitotronic 200 Type WO1A Heat pump control unit For applicability, see the last page VITOTRONIC 200 Please keep safe. 5692 861 GB 8/2010...
  • Page 2: Safety Instructions

    Safety instructions Safety instructions Please follow these safety instructions closely to prevent accidents and mate- rial losses. Safety instructions explained ■ The Code of Practice of relevant trade associations Danger ■ All current safety regulations as This symbol warns against the defined by DIN, EN, DVGW, VDE and risk of injury.
  • Page 3 Please note Repairing components that fulfil a safety function can compromise the safe operation of your sys- tem. Replace faulty components only with original Viessmann spare parts. Auxiliary components, spare and wearing parts Please note Spare and wearing parts that...
  • Page 4: Table Of Contents

    Index Index Introduction Scope of functions....................Setting levels......................Programming unit....................10 Function description Heat pump stage 2....................12 Heat pump cascade..................... 12 Externally switched functions................17 Power-OFF......................19 Booster heaters....................19 DHW heating......................21 Heating water buffer cylinder/low loss header............25 Heating circuits/cooling circuit................
  • Page 5 Index Index 7015 Effect of ext. blocking on heat pump/heating circuits !......108 7017 Vitocom 100 !................... 109 701A Effect of external blocking on pumps/compressor !........ 109 701B Common flow temperature sensor system !..........111 Parameter group compressor Parameter group compressor................112 5000 Enable compressor !................
  • Page 6 Index Index 7A00 Type solar control unit !................123 7A01 Max. collector temperature !..............123 7A02 Start hysteresis solar circuit pump !............123 7A03 Stop hysteresis solar circuit pump !............124 7A07 Flow rate solar circuit for calculating solar yield !........124 7A09 Display message incorrect circulation !...........
  • Page 7 Index Index 2022 Room temperature in party mode..............139 Parameter group cooling Parameter group cooling..................140 7100 Cooling function !..................140 7101 Cooling circuit !..................140 7102 Set room temperature separate cooling circuit..........141 7103 Min. flow temperature cooling !..............141 7104 Influence room temperature hook-up cooling circuit !......
  • Page 8 Index Index (cont.) Pressure sensors....................180 Certificates Declaration of conformity..................181 Keyword index....................182...
  • Page 9: Scope Of Functions

    In addition, the selected system scheme mation regarding the heat pump control and the auxiliary equipment have a unit Vitotronic 200 , type WO1A for major influence on the available func- Viessmann heat pumps: tions in the heat pump control unit.
  • Page 10: Programming Unit

    Introduction Setting levels (cont.) ■ The general operating functions are For functions at the "System found in the standard menu. These user" setting level, see the oper- include the selection of the set room ating instructions. temperature or the selection of the operating program.
  • Page 11 Introduction Programming unit (cont.) Activate extended menu...
  • Page 12: Heat Pump Stage

    Function description Heat pump stage 2 Some heat pumps can be extended by The heat pump control unit starts heat means of a second heat pump stage. pump stage 2 if the heating output This relates to a separate heat pump, required is greater than that delivered by which is controlled by heat pump heat pump stage 1.
  • Page 13 Function description Heat pump cascade (cont.) Electrical connection diagram X3.10 X3.11 230V 223.1 fÖ 223.2 230V 223.1 223.2 230V sÖ 223.1 223.2 A Heat pump 1 (lead appliance) E 1st lag heat pump B KM BUS Connection to the contact for "exter- nal demand"...
  • Page 14 Function description Heat pump cascade (cont.) G 2nd lag heat pump L Central fault message input, lag Connection to the contact for "exter- heat pump nal demand" Open contact X3.10 / X3.11 triggers H Floating contact "external demand" a message K 3rd lag heat pump Subject to the system equipment level, Lag heat pump faults are reported to the...
  • Page 15 Function description Heat pump cascade (cont.) Cascade via LON The following communication modules DHW heating (accessories) must be fitted in the heat pump control units: Connection versions for lead appliance ■ LON communication module for the and lag heat pumps: cascade in the lead appliance ■...
  • Page 16 Function description Heat pump cascade (cont.) C Vitocom "System scheme 7000" "0"up to "10" "11" — "Cascade control 700A" "2" "0" — "Number of lag heat pumps in cas- "1" to "4" — — cade 5735" "Heat pump number in cascade —...
  • Page 17: Externally Switched Functions

    Only heat pump contractors certified by ■ "Flow temperature for external Viessmann may change this. demand 730C" Specifies the set flow temperature at which the secondary circuit should be regulated under external demand.
  • Page 18 Function description Externally switched functions (cont.) External changeover of the operating status Closing the floating contact changes the The following parameters influence the operating status. function: ■ "System components for external changeover 7011" Specifies the system components on which the changeover should act. ■...
  • Page 19: Buffer Cylinder

    Function description Power-OFF Frequently, economy tariffs for electricity To safeguard the remaining functions of include an agreement that the electrical the heating system during the power- supply for compressors and instantane- OFF period, the power supply of the heat ous heating water heaters can be sus- pump control unit is not be switched pended by the power supply utility sev- off.
  • Page 20 Function description Booster heaters (cont.) Connect two high limit safety cut-outs (switching threshold respectively 70 °C) for protection against excessively high heat pump flow and return temperatures: ■ High limit safety cut-out for switching off the external heat source ■ High limit safety cut-out for switching off the secondary pumps Instantaneous heating water heater An electric instantaneous heating water...
  • Page 21: Dhw Heating

    – Positioning at the top of the DHW Only heat pump contractors certified by cylinder. Viessmann may change this. ■ DHW heating with two temperature The heat pump control unit stops the sensors: DHW circulation pump during cylinder –...
  • Page 22 — — — secondary circuit "Operating status", see operat- ing instructions "Vitotronic 200". Frost protection If the temperature at the cylinder tem- Frost protection heating ends as soon as perature sensor drops below 3 °C, the the temperature at the top cylinder tem- heat pump control unit also immediately perature sensor rises above 10 °C.
  • Page 23 Function description DHW heating (cont.) DHW reheating with booster heaters Possible booster heaters: The booster heater is switched on if the ■ Instantaneous heating water heater set temperature for the top cylinder tem- (subject to heat pump type as standard perature sensor is undershot by more delivery, accessory or on-site provi- than "Hysteresis DHW temperature...
  • Page 24: Solar Dhw Heating

    Function description DHW heating (cont.) Solar DHW heating ■ Via the solar control function integra- The solar circuit pump stops if: ted into the heat pump control unit. ■ The temperature differential falls below the value in parameter "Stop ■ Via the external Vitosolic solar control hysteresis solar circuit pump unit.
  • Page 25: Heating Water Buffer Cylinder/Low Loss Header

    7202". Heating stops if: ■ The set buffer temperature is reached. "Operating status", see operat- ■ The "Max. temperature buffer cylin- ing instructions "Vitotronic 200". der 7204" is reached. ■ Short circuit or lead break of the buffer temperature sensor.
  • Page 26: Heating Circuits/Cooling Circuit

    Function description Heating water buffer cylinder/low loss header (cont.) Switching a heating water buffer cylinder on and off Operating status "Top" "Standard" "Fixed value" ■ Buffer temperature sensor ON and OFF ■ Return temperature sensor, secondary circuit Frost protection If the temperature at the buffer tempera- Frost protection heating ends when the ture sensor drops below 3 °C, the heat temperature inside the heating water...
  • Page 27 Function description Heating circuits/cooling circuit (cont.) Systems with large water volumes Systems with large water volumes (e.g. underfloor heating systems) can operate without a heating water buffer cylinder. In these heating systems, install an over- flow valve at the heating circuit distribu- tor of the underfloor heating system that is furthest away from the heat pump.
  • Page 28 Function description Heating circuits/cooling circuit (cont.) Fixed hystereses are programmed to Operating status "Fixed value" prevent brief fluctuations around these limits from resulting in continual change- Central heating/cooling with "Max. flow over between central heating and central temperature heating circuit cooling.
  • Page 29 13:00 h for 10 s Note (pump kick). Only heat pump specialists certified by Viessmann may carry out the conversion Weather-compensated control from weather-compensated to room temperature-dependent control. The heat pump control unit determines...
  • Page 30: Cooling Functions

    Function description Heating circuits/cooling circuit (cont.) During central heating, the heat pump ■ With room temperature hook-up ena- control unit issues a demand to further bled, room temperature is more than heat sources if the following criteria are 0.5 K below the set value. met simultaneously: ■...
  • Page 31 Function description Cooling functions (cont.) Active cooling is only possible outside a A mixer can only be used with natural power-OFF period, and must be enabled cooling, and particularly in cooling mode separately by the system user. for underfloor heating circuits, keeps the To ensure the transfer of the high cooling flow temperature above the dew point.
  • Page 32 Function description Swimming pool heating (cont.) fÖ L1 N gÖ A Connection on controller and sensor F Circulation pump for swimming pool heating (accessory) B External extension H1 G 3-way diverter valve "Swimming C Thermostat for swimming pool tem- pool" (zero volt: heating the heating perature control (floating contact, water buffer cylinder) 230 V~;...
  • Page 33 Troubleshooting Messages Fault display on the heat pump control unit Programming unit on top of appliance A Button to change the end-stop posi- C ON indicator (green) tion D Fault indicator (red) B Top part of control unit with integral programming unit...
  • Page 34 Troubleshooting Messages (cont.) Programming unit in a separate control unit enclosure A ON/OFF switch C ON indicator (green) B Programming unit D Fault indicator (red)
  • Page 35: Scanning Messages

    Troubleshooting Messages (cont.) Programming unit in the appliance front Flow temperature 40℃ Heating/cooling Solar energy Information Select with A ON/OFF switch C ON indicator (green) B Programming unit D Fault indicator (red) Scanning messages When there is a message, the associ- ■...
  • Page 36 < Contact a heat pump spe- min. flow temperature cialist certified by for cooling the heating Viessmann if the cause of circuit. the fault cannot be ■ Cooling set for unavail- removed. able heating circuit.
  • Page 37 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 06 Fault refrigrnt circ. 2 See chapter "Diagnosis Fault message from EEV Observe messages in refrigerant circuit control- controller (refrigerant cir- chapter "Diagnosis refrig- ler". cuit control) heat pump erant circuit controller". 2nd stage (if installed).
  • Page 38 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 0D Test mode ext. unit Heat pump heats or cools External unit in test Test mode can be termi- with a constant flow tem- mode. nated at the external unit. perature in the secon- To do this, hold down dary circuit;...
  • Page 39 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 21 Return sensor secndry Operation with tempera- Short circuit, secondary Check resistance (Pt 500) ture value of flow temper- circuit return temperature at plug-in connection F9 or ature sensor in secon- sensor.
  • Page 40 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 29 Return sensor secndry Operation with tempera- Lead break, secondary Check resistance (Pt 500) ture value of flow temper- circuit return temperature at plug-in connection F9 or ature sensor in secon- sensor.
  • Page 41 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 31 Return sensor primary Operation with tempera- Short circuit, return tem- Check resistance (Pt 500) ture value of flow temper- perature sensor, primary at plug-in connection F3 or ature sensor in primary circuit (heat pump air dis- terminals X5.4/X5.5 (see circuit minus 2 K.
  • Page 42 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 3A Evaporator temp.sensr The air discharge tem- Lead break, evaporator Check resistance (Pt 500) perature sensor is used temperature sensor. at plug-in connection F17 for defrosting the evapo- or terminals X6.4/X6.5 rator.
  • Page 43 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 43 Flow sensor system ■ Flow temperature in Short circuit, system flow Check resistance (Pt 500) heating circuit without temperature sensor at plug-in connection F13 mixer A1 is regulated (downstream of heating (see page 172);...
  • Page 44 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 49 Flow sensor HC3 Mixer heating circuit M3 Lead break, flow temper- Check sensor and replace is closed. ature sensor in heating if required (see installation circuit with mixer M3. instructions, extension kit for heating circuit with mixer).
  • Page 45 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 54 Cylinder sensor solar No solar DHW heating, Short circuit, Vitosolic Check temperature sen- solar circuit pump temperature sensor. sor on the Vitosolic and remains off. replace if required (see Note Vitosolic installation and Not in conjunction with service instructions).
  • Page 46 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 63 Boiler temp.sensor ext External heat source is Short circuit, external Check resistance (Pt 500) blocked. Instantaneous heat source temperature at plug-in connection F20 heating water heater (if sensor. or terminals X6.8/X6.9 installed) is enabled.
  • Page 47 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 72 Room temp. sensor HC3 ■ No frost protection Short circuit, room tem- Check remote control and mode via room temper- perature sensor in heat- replace if required (see ature sensor. ing circuit with mixer M3.
  • Page 48 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 7B Room temp. sensor SKK No cooling mode. Lead break, room tem- Check resistance (Ni 500) perature sensor, cooling at plug-in connection F16 circuit. (see page 172); replace sensor if required. 92 Collector temp.
  • Page 49 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics 9A Collector temp. sensor No solar DHW heating. With internal solar control function: ■ Lead break, collector ■ Check resistance temperature sensor. (Pt 500) at plug-in con- nection F21 (see page 172); replace sensor if required.
  • Page 50 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics A7 Solar circuit pump Inadequate change of No flow in solar circuit Measure voltage at solar temperature in the DHW (solar circuit pump stop- circuit pump terminal and cylinder. ped). check pump; replace if required.
  • Page 51 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics AA Cancel defrost Compressor remains off Inadequate flow or return until the temperature in temperature in the sec- Please note the secondary circuit has ondary circuit for defrost- If the tempera- reached 15 °C.
  • Page 52 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics ■ Check setting of tem- perature limiter in instantaneous heating water heater; increase if required (75 °C). ■ Test instantaneous heating water heater control signal at termi- nals 211.3 (stage 1, see page 150) and 224.4 (stage 2, see page 155);...
  • Page 53 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics AE Cyl. sensor top/bottom – Top and bottom temper- No measures required. ature sensors swapped Heat pump control unit in the DHW cylinder. interchanges the sensors internally. AF Cylinder primary pump Inadequate change of ■...
  • Page 54 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics B1 KM BUS refrig. circ. 1 ■ Refrigerant circuit ena- Communication fault with Check KM BUS connec- bled; limited compres- EEV controller (refriger- tion. A fluctuating DC volt- sor operation. If this ant circuit control).
  • Page 55 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics B4 AD converter Heat pump does not Internal fault ADC (ana- Check PCB; if required, start. logue digital converter, replace in the following reference), ribbon cable order: Controller and sen- between sensor PCB sor PCB (see page 172), and main PCB faulty, or main PCB (see...
  • Page 56 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics B9 KM BUS solar ctrl unit No solar DHW heating. Communication fault KM ■ Check parameter BUS Vitosolic. "Type solar control unit 7A00" (see page 123) ■ Check KM BUS con- necting cable to the Vitosolic.
  • Page 57 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics BE KM BUS remt. ctrl HC3 ■ No room temperature- Communication fault KM Check heating circuit allo- dependent control for BUS remote control heat- cation, connections and heating circuit with ing circuit with mixer M3. remote control cable.
  • Page 58 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics C9 Refrigerant circ. (SHD) Compressor stops. Refrigerant circuit fault, ■ Check flow and return heat pump stage 1: temperature sensors in ■ Safety high pressure primary and secondary switch has responded. circuits.
  • Page 59 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics CB Flow temp. primary Compressor stops. Min. flow temperature in ■ : Check primary circuit primary circuit (brine for throughput. inlet/air intake) not ach- ■ : Outside temperature ieved. too low, no measures required.
  • Page 60 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics CE KM BUS extension Functions for compo- Communication fault KM Check external exten- nents connected to exter- BUS external exten- sion H1 connections and nal extension H1 are not sion H1. connecting cables.
  • Page 61 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics D1 Compressor safety Compressor stops. Compressor fault, heat ■ Reset compressor ther- pump stage 1: mal relay, check setting, ■ Thermal compressor restore delivered condi- relay or safety element tion ("Standard set- of full wave soft starter ting", see menu struc- (if installed) has...
  • Page 62 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics D3 Low pressure Compressor stops. Low pressure fault, heat ■ Have heat pump tested pump stage 1: by a refrigeration engi- ■ Heat pump faulty. neer. ■ Primary pump faulty. ■ Check pressure gauge, ■...
  • Page 63 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics D4 Control high pressure Compressor stops. High pressure fault: ■ Vent heating circuit. ■ Air in heating circuit. ■ Check system pres- ■ Secondary pump or sure. heating circuit pump ■ Check secondary pump blocked.
  • Page 64 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics DA Compressor 2, safety Compressor stops. Compressor fault, heat ■ Reset compressor ther- pump stage 2 (if instal- mal relay, check setting, led): restore delivered condi- ■ Compressor thermal tion ("Standard set- relay has responded.
  • Page 65 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics DB Refrig. circ. (SHD) 2 Compressor stops. Refrigerant circuit fault, ■ Check flow and return heat pump stage 2 temperature sensors in (if installed): primary and secondary ■ Safety high pressure circuits.
  • Page 66 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics Delivered condition: ■ Appliances with pres- sure sensor: Jumper installed between terminals 116.3/116.4. If pressure sensor is installed, the signal must be continu- ously present. ■ Appliances with pres- sure switch: No jumper installed between terminals 116.3/116.4.
  • Page 67 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics DE Prot.primry pump/fan2 Compressor stops. Primary circuit fault: ■ Check safety equip- ■ Primary circuit pres- ment (frost protection, sure switch/frost stat brine pressure, frost has responded. protection AC-Box) on ■ Primary pump thermal cross connect PCB, ter- relay, heat pump minals X3.9 and X3.8...
  • Page 68 Troubleshooting Messages (cont.) Message Code/system characteris- Cause Measures tics FF New start Information display, no Heat pump control unit No measures required. function restriction. restart. Note If connection F11 on the controller and sensor PCB is occupied, the display "Simu- lation"...
  • Page 69 Troubleshooting Diagnosis (service scans) (cont.) "System overview" For further information, see page 72 "System" ■ "Outside temperature" Ú "Adjusted"/"Actual" ■ "Common flow temperature" Ú "Set"/"Actual" ■ "Operating status system" Ú ■ "Heating season" ■ "Cooling period" ■ "Buffer cylinder" ■ "Op. status buffer cylinder" Ú ■...
  • Page 70 Troubleshooting Diagnosis (service scans) (cont.) "DHW" ■ "Heating program" Ú "Operating status:" ■ "Time program DHW" Ú ■ "Time prog. DHW circ." Ú ■ "DHW" Ú "Set DHW temp."/"Cylinder temp. top"/"Cylinder temp. bottom" ■ "Cylinder primary pump" (status) ■ "Cylinder primary pump" (pump rate in %) ■...
  • Page 71 Troubleshooting Diagnosis (service scans) (cont.) "Energy statement" ■ "Energy statemnt heating" Ú ■ "Energy statement DHW" Ú ■ "SPF heating" ■ "SPF DHW" ■ "SPF overall" For further information, see page 91 Note The integral calculation function for the seasonal perform- ance factor "SPF"...
  • Page 72 Troubleshooting Diagnosis (service scans) (cont.) "Signal inputs" ■ "External demand" ■ "External blocking" ■ "Reheat suppression" ■ "Fault lag heat pump" ■ "Power-OFF contact" ■ "Three-phase monitor" ■ "Primary pump/fan" ■ "Safety high pressure" ■ "Low pressure" ■ "Control high pressure" ■...
  • Page 73 Troubleshooting Diagnosis (service scans) (cont.) Brine/water heat pump D E F G H K System overview Ü Ç 50 45 21 22 23 33 21 22 23 18 32 33 38 38 Back with ä A to L For explanation, see the fol- Geothermal probe symbol lowing tables.
  • Page 74 Troubleshooting Diagnosis (service scans) (cont.) Air/water heat pump D E F G H K System overview Ü Ç 50 45 21 22 23 33 21 22 23 18 32 33 38 38 Back with ä A to L For explanation, see the fol- Fan symbol lowing tables.
  • Page 75 Troubleshooting Diagnosis (service scans) (cont.) Air/water heat pump, split version D E F G H System overview Ü Ç 50 45 21 22 33 21 22 Back with ä A to L For explanation, see the fol- Symbol for fan, external unit lowing tables.
  • Page 76 Troubleshooting Diagnosis (service scans) (cont.) Column A Column B Outside temperature sensor : Fan stage 1 Outside temperature (long term average) : Fan stage 2 3 or Primary circuit flow temperature (brine inlet/air intake tempera- : Fan stage 3 ture) 7 or Primary circuit return tempera- : Fan external unit...
  • Page 77 Troubleshooting Diagnosis (service scans) (cont.) Note Column G The details relating to solar DHW heating Heating circuit without mixer A1 in column D are only relevant if the Room temperature (requires integral solar control function is used. room temperature sensor) In some heat pumps, the solar control Set room temperature function is not available.
  • Page 78 Troubleshooting Diagnosis (service scans) (cont.) Column L Separate cooling circuit Room temperature (requires room temperature sensor) Set room temperature Flow temperature, separate cool- ing circuit Set flow temperature, cooling cir- cuit (calculated from set room temperature) "Cooling circuit pump": Control via connection sYA (see page 150) Mixer...
  • Page 79 Troubleshooting Diagnosis (service scans) (cont.) Display Explanation I [–] Information index (commands, status, versions): 12 digits, 4 different codes possible at each position, hexadecimal dis- play; observe the subsequent display system (see page 79). Tsh, Tc [°C] Tsh: Set superheating temperature Tc: Set hot gas temperature for start of the vapour injection (EVI) Pmop Max.
  • Page 80 Troubleshooting Diagnosis (service scans) (cont.) Active codes (Table C) Display value Active codes "0" — — — — "1" — — — "2" — — — "3" — — "4" — — — "5" — — "6" — — "7" —...
  • Page 81 Troubleshooting Diagnosis (service scans) (cont.) Position Active code Explanation Digital scroll relay enabled. EVI valve enabled. Refrigerant circuit control enabled by heat pump control unit via digital input. Cooling mode enabled, start via digital input. Refrigerant circuit control enabled by heat pump control unit via KM BUS.
  • Page 82 Troubleshooting Diagnosis (service scans) (cont.) Fault index "Err" (Table E) Posi- Active Explanation System charac- Measures tion code teristics Components and fault messages reported directly by EEV controller. Liquid gas temper- ■ Compressor Check sensor; ature sensor remains in oper- replace if required.
  • Page 83 Troubleshooting Diagnosis (service scans) (cont.) Posi- Active Explanation System charac- Measures tion code teristics Condensation tem- Compressor is Check heat transfer perature too high. switched off. in secondary circuit ■ Check secondary pump ■ Check set tem- peratures for DHW heating or heating of the heating water buf- fer cylinder.
  • Page 84 Troubleshooting Diagnosis (service scans) (cont.) Posi- Active Explanation System charac- Measures tion code teristics Maximum operat- Compressor No measures ing pressure remains in opera- required. (MOP) was tion. reached; control type (superheating/ evaporation pres- sure control) in refrigerant circuit was adjusted. Fault due to imper- Compressor is Check compressor...
  • Page 85 Troubleshooting Diagnosis (service scans) (cont.) Diagnosis "Refrigerant circuit" Temperature and pressure values, Two-stage heat pump primary and secondary circuits Refrigerant circuit 1+2 Ü While the compressor is running, the Heat pump heat pump control unit displays the cur- [ °C 19.8 [ °C 11.3...
  • Page 86 Troubleshooting Diagnosis (service scans) (cont.) Display Explanation tpe °C Brine inlet/air intake temperature tpa °C Brine outlet/air discharge temperature tse °C Secondary circuit return temperature tsa °C Secondary circuit flow temperature p0 bara Evaporation pressure pc bara Condensation pressure Err/Msg Last fault information code before a compressor shutdown;...
  • Page 87 Troubleshooting Diagnosis (service scans) (cont.) Service menu: Note 1. Press OK + å simultaneously for The information displayed is independ- ent of the heat pump control unit fault approx. 4 s. codes (see page 36). 2. "Diagnosis" 3. "Heat pump" 4.
  • Page 88 Troubleshooting Diagnosis (service scans) (cont.) Line "I [–]" Col- Explanation Protection functions for control of hot gas superheating (C/D) C Characteristics of the external D Cause: unit: "0" Standard mode, protection "0" Standard mode. function disabled. "1" Compressor frequency is "1"...
  • Page 89 Troubleshooting Diagnosis (service scans) (cont.) Line "CTT, ICT, IRT [°C]" Col- Explanation Compressor head temperature (CTT). Condensation temperature, condenser (ICT). Liquid gas temperature (IRT). Line "HST, LWT, RWT [°C]" Col- Explanation Heat sink temperature, DC inverter (HST). Secondary circuit flow temperature upstream of instantaneous heating water heater (LWT).
  • Page 90 Troubleshooting Diagnosis (service scans) (cont.) Line "A [–]" Col- Explanation Fault message output, refrigerant circuit (external or internal unit). Requirement: Refrigerant circuit fault, internal unit (column 1 set to "4") or fault message, refrigerant circuit, external unit (column 3 set to "1"). "0"...
  • Page 91 Troubleshooting Diagnosis (service scans) (cont.) Diagnosis "Energy statement" The following information can be scan- ned: ■ "Energy statemnt heating": Energy statemnt heating Electrical energy used to operate the Ü heat pump and the amount of heating energy transferred into the heating è...
  • Page 92 Troubleshooting Diagnosis (service scans) (cont.) Service menu: Brief scan Ü 1. Press OK + å simultaneously for approx. 4 s. 2. "Diagnosis" 3. "Brief scan" Select with For an explanation of the relevant values on the individual lines, see the fol- lowing table: Line Field...
  • Page 93: Testing Outputs (Actuator Test)

    Troubleshooting Diagnosis (service scans) (cont.) Line Field Remote control: Heating circuit with- Heating circuit with Heating circuit with out mixer A1: mixer M2 mixer M3 0 none Software 0 none Software 0 none Software 1 Vitotrol version 1 Vitotrol version 1 Vitotrol version 200A...
  • Page 94: Function Check

    Troubleshooting Function check Service menu: 3. "Function check" 1. Press OK + å simultaneously for 4. Select required group, e.g. "DHW". approx. 4 s. 2. "Service functions" Function System characteristics "Heating circuit 1" Secondary pump and heating circuit pump A1 are started.
  • Page 95: Lon Subscriber Check

    Troubleshooting Function check (cont.) Function System characteristics "Solar" ■ With integral solar control function: Solar circuit pump starts. ■ With the Vitosolic: The display for the solar circuit pump is enabled in the system overview. Start the solar circuit pump via the Vitosolic (see Vitosolic installation and serv- ice instructions).
  • Page 96: No Display In Programming Unit

    Troubleshooting LON subscriber check (cont.) Possible displays: ■ "Check OK" ■ No display (status unknown): Communication between both sub- Subscriber has not yet registered, but scribers successful. has not yet been identified as failed. ■ "OK"/"Fault": ■ "Failed" : Subscriber has registered. Everything Subscriber has not registered for more is OK or the subscriber has a fault.
  • Page 97: Coding Level 1 In Service Menu

    Control unit settings Coding level 1 in service menu Please note Always observe the information Incorrect operation at "Coding in the installation and service level 1" can result in damage to instructions for the heat pump in the appliance and heating sys- question;...
  • Page 98: Parameter Group System Definition

    Parameter group system definition Parameter group system definition Service menu: 3. "System definition" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 7000 System scheme ! Set the system scheme during commis- Note sioning according to the system version.
  • Page 99 Parameter group system definition 7000 System scheme ! (cont.) Components System scheme Heating circuit — — — — — — — — — — — — — — — — — — DHW cylinder — — — — — — Heating water buffer cylinder —...
  • Page 100: Temperature Differential For Calculating The Heating Limit

    Parameter group system definition 7003 Temperature differential for calculating the heating limit ! Heating limit: Set room temperature – "Temperature 20°C differential for calculating the heating 18°C limit". 16°C Central heating is switched on automat- ically if the adjusted outside temperature (averaging interval in the delivered con- dition 3 hours) falls below the heating limit.
  • Page 101 Parameter group system definition 7004 Temperature differential for calculating… (cont.) Note Delivered condi- Setting range The cooling limit has no effect on a sep- tion arate cooling circuit. 10 to 200 40 (≙ 4 K) This parameter is only available if cool- (≙...
  • Page 102: A Cascade Control

    Parameter group system definition 7010 External extension ! (cont.) Note Delivered condi- Setting External extension H1 is required in con- tion junction with swimming pool heating. 0 / 1 In this case, the following functions can- not be implemented using external extension H1: ■...
  • Page 103: Swimming Pool

    Parameter group system definition 700B Output lag heat pump ! Average heating output of the lag heat Delivered condi- Setting range pumps in a cascade, averaged over all tion lag heat pumps, subject to type. 10 kW 0 to 255 kW 700C Use of heat pump in cascade ! ■...
  • Page 104 Parameter group system definition 700C Use of heat pump in cascade ! (cont.) Value Application Heating DHW heat- Cooling Swimming Solar DHW pool heat- heating "12" — — — "13" — — "14" — — "15" — "16" — — —...
  • Page 105: Heating Circuit Without Mixer A1

    Parameter group system definition 7011 System components for external changeover ! (cont.) Example: Note Value of parameter "34" (see following The function "Effect of external table): demand on heat pump/heating cir- Simultaneous changeover of the operat- cuits 7014" has higher priority than the ing status for heating circuit with function "System components for mixer M2, e.g.
  • Page 106: Operating Status For External Changeover

    Parameter group system definition 7011 System components for external changeover ! (cont.) Value Heating cir- Heating cir- Heating cir- DHW heat- Heating cuit without cuit with cuit with water buffer mixer A1 mixer M2 mixer M3 cylinder "51" — "52" —...
  • Page 107: Duration Of External Changeover

    Parameter group system definition 7013 Duration of external changeover ! ■ Signal duration A < value for the See chapter "Function description – Externally switched functions". duration of the changeover B: Minimum duration of the external oper- Changeover duration 8 h ating status changeover after closing the ■...
  • Page 108: Heating Circuit With Mixer M2

    Parameter group system definition 7014 Effect of external demand on heat pump/heating circuits ! See chapter "Function description – Note Externally switched functions". The "External blocking" signal has a Setting on which the function "External higher priority than the "External demand/External mixer OPEN"...
  • Page 109: A Effect Of External Blocking On Pumps/Compressor

    Parameter group system definition 7015 Effect of ext. blocking on heat… (cont.) Value Heating circuit with Heating circuit with Heat pump blocking mixer M2 mixer M3 "3" Mixer "CLOSED" Mixer "CLOSED" "4" Control mode Control mode "5" Mixer "CLOSED" Control mode "6"...
  • Page 110 Parameter group system definition 701A Effect of external blocking on… (cont.) Value Secon- Cylinder Heating Heating Heating cir- dary pump circuit circuit cuit pump pump/ blocked pump pump A1 blocked compres- blocked blocked blocked "0" — — — — — "1"...
  • Page 111: B Common Flow Temperature Sensor System

    Parameter group system definition 701B Common flow temperature sensor system ! In systems with a heating water buffer cylinder, a common flow temperature sensor can be installed in the heating water flow, downstream of the heating water buffer cylinder. Value Explanation "0"...
  • Page 112 Parameter group compressor Parameter group compressor Service menu: 3. "Compressor" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 5000 Enable compressor ! Enable the compressor for operation of Delivered condi- Setting range the heat pump or stage 1 of the heat tion pump.
  • Page 113 Parameter group compressor 2 Parameter group compressor 2 Service menu: 3. "Compressor 2" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 5100 Enable compressor ! Enable heat pump stage 2. Delivered condi- Setting range tion Value...
  • Page 114: Parameter Group External Heat Source

    Parameter group external heat source Parameter group external heat source Service menu: 3. "External heat source" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 7B00 Enable external heat source ! If there is a corresponding heat demand, Value Explanation the external heat source can be started...
  • Page 115: B0D Enable External Heat Source For Dhw Heating

    Parameter group external heat source 7B02 Dual mode temperature external heat… (cont.) Delivered condi- Setting range tion –500 to +500 100 (≙ 10 °C) (≙ –50 to +50 °C) 7B0D Enable external heat source for DHW heating ! If the heat demand of the DHW cylinder cannot be covered by the heat pump, the circulation pump for DHW reheating and the external heat source will be activa-...
  • Page 116: Parameter Group Dhw

    Parameter group DHW Parameter group DHW Service menu: 3. "DHW" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 6000 Set DHW temperature If the set DHW temperature cannot be Operating instructions achieved with the heat pump, the follow- ing booster heaters can be used: ■...
  • Page 117: Hysteresis Dhw Temperature Heat Pump

    Parameter group DHW 6006 Max. DHW temperature ! (cont.) To limit the temperature to 60 °C, Delivered condi- Setting range install a mixing device, e.g. an tion automatic thermostatic mixing 200 to 800 600 (≙ 60 °C) valve (DHW cylinder accessory). (≙...
  • Page 118: Hysteresis Dhw Temperature Instant. Heating Water Heater

    Parameter group DHW 6008 Hysteresis DHW temperature instant. heating water heater ! D Actual DHW temperature at the top The set value determines the deviation from the "Set DHW temperature cylinder temperature sensor 6000" at which DHW reheating is started E Heat pump switching state using the booster heaters.
  • Page 119: C Set Dhw Temperature

    Parameter group DHW 600A Stop optimisation for DHW heating (cont.) Delivered condi- Setting range tion 0 / 1 600C Set DHW temperature 2 Set temperature in the DHW cylinder Operating instructions for: ■ Additional DHW heat-up function to kill bacteria (for this a temperature sensor Delivered condi- Setting range must be fitted at the bottom of the...
  • Page 120: Enable Booster Heaters For Dhw Heating

    Parameter group DHW 6014 Enable booster heaters for DHW heating ! If the set DHW temperature cannot be Valu Explanation achieved with the heat pump, the follow- ing booster heaters can be used: "0" Immersion heater or external ■ Immersion heater ("Enable electric heat source is connected but not heaters for DHW heating 6015") enabled for DHW reheating.
  • Page 121: Start Attempts For Dhw After High Pressure Shutdown

    Parameter group DHW 6016 Priority DHW heating with combi cylinder ! (cont.) Valu Explanation Delivered condi- Setting range tion "0" Simultaneous central heating and 0 / 1 DHW heating is possible. "1" No central heating during DHW heating; all heating circuit pumps are switched off during this time.
  • Page 122: Operating Mode Cylinder Primary Pump

    Parameter group DHW 6017 Start attempts for DHW after high… (cont.) Operating instructions Delivered condi- Setting range tion 0 to 10 6020 Operating mode cylinder primary pump ! Only make this setting if a high efficiency DC pump is used as a cylinder primary pump.
  • Page 123: Parameter Group Solar

    Parameter group solar Parameter group solar Service menu: 3. "Solar" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 7A00 Type solar control unit ! Valu Explanation Delivered condi- Setting range tion "0"...
  • Page 124: A03 Stop Hysteresis Solar Circuit Pump

    Parameter group solar 7A03 Stop hysteresis solar circuit pump ! Only in conjunction with integral solar Delivered condi- Setting range control function ("Type solar control tion unit 7A00"): 10 to 150 30 (≙ 3 K) The set value determines the tempera- (≙...
  • Page 125: Parameter Group Electric Heater

    Parameter group electric booster heater Parameter group electric heater Service menu: 3. "Electric heater" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 7900 Enable instantaneous heating water heater ! If an instantaneous heating water heater Delivered condi- Setting range is installed in the secondary circuit flow,...
  • Page 126: Max. Output Instantaneous Heating Water Heater

    Parameter group electric booster heater 7902 Enable instant. heating water heater for… (cont.) Valu Explanation Delivered condi- Setting range tion "0" Instantaneous heating water 0 / 1 heater is connected, but not ena- bled for central heating. "1" Instantaneous heating water heater is enabled for central heat- ing.
  • Page 127 Parameter group electric booster heater 790B Dual mode temp. instant. heating water… (cont.) If the adjusted outside temperature falls below the dual mode temperature, the heat pump control unit enables operation of the instantaneous heating water heater. Requirement: The heat pump and/or other heat sources cannot meet the cur- rent heat demand on their own.
  • Page 128: Parameter Group Internal Hydraulics

    Parameter group internal hydraulics Parameter group internal hydraulics Service menu: 3. "Internal hydraulics" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 7300 Heat pump for drying a building ! On account of the high energy demand during building drying/screed drying, the ■...
  • Page 129 Parameter group internal hydraulics 7303 Time program for screed drying ! (cont.) ■ The screed programme affects all ena- Valu Temperature/time profile bled heating circuits in parallel. A Flow temperature ■ The selected "Screed program" is con- B Days tinued after a power failure or after the "0"...
  • Page 130: C Flow Temperature For External Demand

    Parameter group internal hydraulics 7303 Time program for screed drying ! (cont.) Valu Temperature/time profile Valu Temperature/time profile A Flow temperature A Flow temperature B Days B Days "4" Temperature/time profile 4 "7" Fixed value temperature pro- gramme Duration: 5 days "8"...
  • Page 131: D Enable Three-Way Diverter Valve Heating/Dhw

    Parameter group internal hydraulics 730C Flow temperature for external demand ! (cont.) Set flow temperature for the secondary Delivered condi- Setting range circuit in the case of external demand for tion the heat pump, independent of the room 0 to 700 500 (≙...
  • Page 132: Operating Mode Secondary Pump

    Parameter group internal hydraulics 7340 Operating mode secondary pump ! Delivered condi- Setting range tion Do not adjust.
  • Page 133: Parameter Group Buffer Cylinder

    Parameter group buffer cylinder Parameter group buffer cylinder Service menu: 3. "Buffer cylinder" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 7200 Enable buffer cylinder/ low loss header ! Only in conjunction with System Valu Explanation schemes 1 and 2.
  • Page 134: Max. Temperature Buffer Cylinder

    Parameter group buffer cylinder 7203 Hysteresis temperature heating buffer… (cont.) C Heating the heating water buffer cyl- inder OFF D Heating the heating water buffer cyl- inder ON Delivered condi- Setting range tion 20 to 200 500 (≙ 50 °C) (≙...
  • Page 135: Temp. Limit Op. Status Fixed Value For Buffer Cylinder

    Parameter group buffer cylinder 7208 Temp. limit op. status fixed value for buffer cylinder ! If the long term average outside temper- ature exceeds this temperature limit, the heat pump control unit blocks the oper- ating status "Fixd value" (e.g. in sum- mer).
  • Page 136: Parameter Group Heating Circuits/Cooling Circuit

    Parameter group heating circuits/cooling circuit Parameter group heating circuits/cooling circuit Service menu: Note 1. Press OK + å simultaneously for The parameters in parameter groups approx. 4 s. heating circuit 1, heating circuit 2 and 2. "Coding level 1" heating circuit 3 are identical. 3.
  • Page 137: Heating Curve Level

    Parameter group heating circuits/cooling circuit 2003 Remote control ! (cont.) Note Note No remote control can be connected to Remote control units have no function a separate cooling circuit. A separate when the heat pump is set to "Manual room temperature sensor is required. mode"...
  • Page 138: A Influence Room Temperature Hook-Up

    Parameter group heating circuits/cooling circuit 200A Influence room temperature hook-up ! Influence of the room temperature hook- Delivered condi- Setting range up on the heating curve when a room tion temperature sensor is installed 0 to 50 ("Remote control 2003") and room temperature hook-up is enabled ("Room temperature hook-up 200B").
  • Page 139: E Max. Flow Temperature Heating Circuit

    Parameter group heating circuits/cooling circuit 200E Max. flow temperature heating circuit ! The set flow temperature, which is cal- Note culated from the outside temperature, Since the heat pump control unit only the heating curve and the set room tem- limits the set value with this parameter, perature of the selected heating circuit, install a temperature limiter (accessory)
  • Page 140: Parameter Group Cooling

    Parameter group cooling Parameter group cooling Service menu: 3. "Cooling" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 7100 Cooling function ! See chapter "Function description – Delivered condi- Setting range Cooling functions".
  • Page 141: Set Room Temperature Separate Cooling Circuit

    Parameter group cooling 7102 Set room temperature separate cooling circuit Operating instructions Delivered condi- Setting range tion 100 to 300 200 (≙ 20 °C) A separate room temperature sensor (≙ 10 to 30 °C) must be connected. 7103 Min. flow temperature cooling ! If a lower set flow temperature than the Delivered condi- Setting range...
  • Page 142: Cooling Curve Level

    Parameter group cooling 7110 Cooling curve level ! The value determined from the cooling Delivered condi- Setting range curve for the flow temperature is adopted tion directly as the set value for the cooling –150 to +400 0 (≙ 0 K) circuit.
  • Page 143: Parameter Group Time

    Parameter group time Parameter group time Service menu: 3. "Time" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 7C00 to 7C06 Automatic changeover summertime - winter- time ! In the delivered condition, the change- over will always take place in the night from Saturday to Sunday on the last weekend in March and October.
  • Page 144: Parameter Group Communication

    The first part communication interface always has is permanently set to the same value for subscriber number 99. all Viessmann appliances. The other parts comprise system and subscriber Delivered condi- Setting range number. This enables subscribers to be...
  • Page 145: Lon Fault Manager

    Parameter group communication 7779 LON fault manager ! The heat pump control unit which is the Valu Explanation fault manager displays all the system fault messages. Furthermore, it monitors "0" Heat pump control unit is not fault all subscribers for failure and generates manager.
  • Page 146: Lon System Number

    1 to 5 phone network (country code, area code, subscriber number). The first part is permanently set to the same value for all Viessmann applian- ces. The other parts comprise system and subscriber number. This enables subscribers to be grouped according to...
  • Page 147 Parameter group communication 77FF Time via LON ! (cont.) Delivered condi- Setting range tion 0 / 1 / 2...
  • Page 148: Parameter Group Operation

    Parameter group operation Parameter group operation Service menu: 3. "Control" 1. Press OK + å simultaneously for 4. Select parameter. approx. 4 s. 2. "Coding level 1" 8800 Lock out controls ! Valu Explanation "0" Operation in the standard menu and extended menu enabled.
  • Page 149: Overview Of The Pcbs

    PCBs and connection options Overview of the PCBs PCB locations in the heat pump Installation and service instruc- tions of the relevant heat pump. Printed circuit board Vitocal (PCB) 200-S 222-G 300-A 300-G 333-G 242-G 350-A 333-G 343-G Main PCB (operating components 230 V~, see page 150) Extension PCB (oper-...
  • Page 150: Information Regarding The Electrical Connections

    PCBs and connection options Information regarding the electrical connections Installation and service instruc- ■ The KM BUS wires are interchangea- tions of the relevant heat pump. ble. ■ The neutral and earth conductors of all components are, subject to heat pump ■...
  • Page 151 PCBs and connection options Main and extension PCB (cont.) Operating components 230 V~ 1 2 3 4 1 2 3 4 5 6 7 1 2 3 4 5 NC/AC sYÖ fÖ 6.3 A (slow) 1 2 3 4 5 1 2 3 4 Fuse 6.3 A (slow) sYA/sYS Operating components...
  • Page 152 PCBs and connection options Main and extension PCB (cont.) Information regarding the connection values ■ The output given is the recommended connected load. ■ The stated current indicates the max. switching current of the switching con- tact (observe the total current for all connected components of 5 A).
  • Page 153 PCBs and connection options Main and extension PCB (cont.) Plug sYA Terminals Function Explanation 211.1 Connection values ■ Output: 200 W Primary pump (heat pump ■ Voltage: 230 V~ stage 1 or common primary ■ Max. switching current: 4 (2) A pump), well pump control (on-site connection).
  • Page 154 PCBs and connection options Main and extension PCB (cont.) Plug sYA Terminals Function Explanation 211.4 ■ 3-way diverter valve Connection values "Heating/DHW heating" ■ Output: 130 W ■ Circulation pump for cylin- ■ Voltage: 230 V~ der heating ■ Max. switching current: 4 (2) A ■...
  • Page 155 PCBs and connection options Main and extension PCB (cont.) Plug sYS Terminals Function Explanation 212.2 Heating circuit pump for ■ This pump is installed in addition to the heating circuit without mixer secondary pump if a heating water buffer cylinder is connected. ■...
  • Page 156 PCBs and connection options Main and extension PCB (cont.) Operating components 230 V~ sXÖ L1 N 1 2 3 4 1 2 3 4 5 6 7 1 2 3 a:C] sXÖ Enable compressor control sXS-sXG Operating components heat pump stage 2 (connec- 230 V~ (connected on site) ted on site)
  • Page 157 PCBs and connection options Main and extension PCB (cont.) Information regarding the connection values ■ The output given is the recommended connected load. ■ The stated current indicates the max. switching current of the switching con- tact (observe the total current for all connected components of 5 A) ■...
  • Page 158 PCBs and connection options Main and extension PCB (cont.) Plug sXS Terminals Function Explanation 222.3 Control of external heat Floating contact. 222.4 sources with two high limit Connection values (contact breaking safety cut-outs (max. 70 °C) capacity) for the heat pump and to ■...
  • Page 159 PCBs and connection options Main and extension PCB (cont.) Plug sXF Terminals Function Explanation 224.4 Control of instantaneous Connection values heating water heater, ■ Output: 10 W stage 2. ■ Voltage: 230 V~ ■ Max. switching current: 4 (2) A 224.5 Connection values ■...
  • Page 160 PCBs and connection options Main and extension PCB (cont.) Plug sXG Terminals Function Explanation 225.1 Heating circuit pump of the Connect the temperature limiter in series heating circuit with mixer as maximum temperature limiter for underfloor heating circuit (if installed) Connection values ■...
  • Page 161 PCBs and connection options Main and extension PCB (cont.) Connections, DHW heating Vitocal 200-S 211.4 (main PCB) 224.6 (expansion Scheme PCB) 211.4 ■ 3-way diverter valve – B (integral) ■ Cylinder primary pump ■ 2-way shut-off valve 211.4 A Secondary pump...
  • Page 162 PCBs and connection options Main and extension PCB (cont.) Vitocal 222-G 211.4 (main PCB) 224.6 (expansion Scheme PCB) 211.4 3-way diverter valve B – (integral) A Secondary pump Vitocal 242-G 211.4 (main PCB) 224.6 (expansion Scheme PCB) 211.4 ■ 3-way diverter valve –...
  • Page 163 PCBs and connection options Main and extension PCB (cont.) Vitocal 300-G, 21 to 45 kW, 1 and 2 stages Vitocal 300-A, type AWO-AC 301.A Vitocal 350-A 211.4 (main PCB) 224.6 (expansion Scheme PCB) 224.6 Circulation pump for cyl- ■ Cylinder primary inder heating E pump C ■...
  • Page 164 PCBs and connection options Main and extension PCB (cont.) Vitocal 300-A, type AWCI-AC 301.A 211.4 (main PCB) 224.6 (expansion Scheme PCB) 224.6 211.4 3-way diverter valve B ■ Cylinder primary (integral) pump C ■ 2-way shut-off valve 211.4 A Secondary pump Vitocal 333-G/333-G NC/343-G 211.4 (main PCB) 224.6 (expansion...
  • Page 165: Cross Connect Pcb

    PCBs and connection options Cross connect PCB For use see chapter "Overview of the PCBs". Message and safety terminals 1 / N / PE 230 V / 50 Hz 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 5 4 3 2 1 17 16 15 14 13 12 11 10...
  • Page 166 PCBs and connection options Cross connect PCB (cont.) Terminals X2.N for neutral con- X5/X7 Internally occupied ter- ductors of all corresponding sys- minals tem components Terminals for connect- ■ Mains terminals for power sup- ing cable (control cable ply to control unit "L1" and aux- 230 V~) to the heat iliary components pump control panel...
  • Page 167 PCBs and connection options Cross connect PCB (cont.) Terminals Function Explanation X3.8 Floating contact required: X3.9 ■ Closed: Safety chain has continuity Primary circuit pressure ■ Open: Safety chain interrupted; heat switch and/or frost stat. pump shut down ■ Breaking capacity 230 V~, 0.15 A Contact humidistat.
  • Page 168 PCBs and connection options Luster terminals (only Vitocal 222-G/242-G) Message and safety terminals 1 / N / PE 230 V / 50 Hz 1 PE F1 6.3 A (slow) F1 Fuse 6.3 A (slow) X3 ■ Mains terminals for power supply X1 Terminals X1.? for earth conduc- to control unit "L1"...
  • Page 169 PCBs and connection options Luster terminals (only Vitocal 222-G/242-G) (cont.) Terminals Function Explanation X3.1 Phase switched X3.3 Flow limiter, well circuit. Floating contact required: X3.4 ■ Closed: Heat pump in operation ■ Open: Heat pump shut down ■ Breaking capacity 230 V, 0.15 A With a connected flow limiter, no jumpers should be installed.
  • Page 170 PCBs and connection options Luster terminals (only Vitocal 200-S) Message and safety terminals 1 / N / PE 230 V / 50 Hz F1 6.3 AH (slow) 1 1 7 6 211.2 211.4 1 2 3 N N N N N N N N N Fuse 6.3 A (slow) Terminals for message and safety Terminals X1.? for earth conduc-...
  • Page 171 PCBs and connection options Luster terminals (only Vitocal 200-S) (cont.) Terminals Function Explanation X3.1 Phase switched. Via control unit ON/OFF switch. Note Observe the total load (1000 W) of all con- nected components. X3.6 Power-OFF (jumper fitted Floating contact required: X3.7 at the factory).
  • Page 172: Controller And Sensor Pcb

    PCBs and connection options Luster terminals (only Vitocal 200-S) (cont.) Terminals Function Explanation X3.8 Contact humidistat and/or Floating contact required: X3.9 frost stat, cooling. ■ Closed: Safety chain has continuity ■ Open: Safety chain interrupted; heat Jumper. pump shut down ■...
  • Page 173 PCBs and connection options Controller and sensor PCB (cont.) Connections for temperature Programming unit connection sensors Slot for LON communication Connection of connecting lead to module the main PCB Pulse width modulation PWM X5/X6 control connection (for high effi- ciency pump) Terminals for internal sensors Coding card slot and components...
  • Page 174 PCBs and connection options Controller and sensor PCB (cont.) Sensors Plug Sensor Type Outside temperature sensor Ni500 (connection on site) (PTC) Flow temperature sensor, primary circuit Pt500 (X5.2/X5.3) (connection on site) (PTC) Air intake temperature sensor (factory connection) Return temperature sensor, primary circuit Pt500 (X5.4/X5.5) (connection on site)
  • Page 175 PCBs and connection options Controller and sensor PCB (cont.) Plug Sensor Type Boiler temperature sensor, external heat source Pt500 (X6.8/X6.9) (connection on site) (PTC) Collector temperature sensor (with integral solar control Pt500 function) (PTC) (connection on site) Curves, temperature sensors Ni 500 Pt 500 140 180...
  • Page 176: Avi Pcb (Only Vitocal 200-S)

    PCBs and connection options AVI PCB (only Vitocal 200-S) Interface internal unit – external unit LED1 ODU-AVI COMM: LED2 IDU-AVI COMM: Communication active: AVI PCB Communication active: AVI PCB (P202 or P203) with refrigerant (P501) with controller and sensor circuit control, external unit PCB (KM BUS) Connections/Terminals Plug...
  • Page 177: Nc Pcb

    PCBs and connection options AVI PCB (only Vitocal 200-S) (cont.) Plug Components P203 BUS connection (43 V~) to the external unit 4/7 kW Note ■ Only one BUS connection must be connected. ■ These cores must not be interchanged. P301 Pressure sensor, liquid gas (PS) P302 Temperature sensor, liquid gas (IRT)
  • Page 178: Eev Pcb

    PCBs and connection options NC PCB (cont.) Plugs/ter- Function Explanation minals X3.3 Frost stat, primary circuit Factory connection. X3.4 Connection values ■ Output: 230 W ■ Voltage: 230 V~ ■ Max. switching current: 1 A X4.1 Contact humidistat secon- On-site connection X4.2 dary circuit Connection values...
  • Page 179 PCBs and connection options EEV PCB (cont.) 230 V~ 24 V~ A Compressor relay L Liquid gas temperature sensor B Mains voltage (Pt500) M Hot gas temperature sensor C EVI relay (Pt500) D Defrost N High pressure sensor E Modulation compressor O Suction gas temperature sensor F Enable compressor control (Pt500)
  • Page 180: Pcbs And Connection Options

    PCBs and connection options PCBs and connection options (cont.) EEV stepper motor T EEV stepper motor, connection U EEV stepper motor, connection valve type EX4/EX5 valve type EXM/EXL Pressure sensors The following pressure sensors can be used: ■ PT4 with threaded connection ■...
  • Page 181: Declaration Of Conformity

    Certificates Declaration of conformity Installation and service instruc- tions of the relevant heat pump.
  • Page 182: Keyword Index

    Keyword index Keyword index Compressor Acknowledging messages....35 ■ Defrost end........112 Active cooling......30, 140 ■ Enable..........112 Active cooling enable.......142 ■ Output...........112 Actuator test........93 ■ Parameter group......112 AD converter........55 Compressor 2 Automatic time changeover.....143 ■ Enable..........113 ■ Output...........113 ■ Parameter group......113 Booster heaters........19 Compressor runtime......86 Booster heaters for central heating..29 Compressor shutdown.......52...
  • Page 183 Keyword index Keyword index (cont.) Diverter valve ■ 2nd set temperature.....119 ■ Heating/DHW heating....131 ■ 2nd temperature sensor....119 Diverter valve (3-way diverter valve)..14 ■ Bottom cylinder temperature sen- Dual mode operation......19 sor..........119 ■ Hysteresis......117, 118 ■ Maximum temperature....116 Earth conductor........150 ■...
  • Page 184 Keyword index Keyword index (cont.) Heating water buffer cylinder..25, 133 Fault...........35 ■ Enable..........133 Fault codes........36 ■ Frost protection.......26 Fault history........36 ■ Heating...........25 Fault index.........79 ■ Max. temperature......134 Fault list..........36 ■ Operating status fixed value..133 Fault manager........145 ■ Set temperature......133 Fault memory........36 ■...
  • Page 185 Keyword index Keyword index (cont.) Lag heat pump........12 Natural cooling......30, 140 ■ LON number.........144 NC PCB...........177 ■ Output...........103 Neutral conductor......150 Load classes........86 Note...........35 Lock out controls......148 ■ Addressing......144, 146 Operating mode ■ communication fault......57 ■ Cylinder primary pump....122 ■ Outside temperature, send...145 ■...
  • Page 186 Keyword index Keyword index (cont.) Party mode Scanning operating data....68 ■ Set room temperature....139 Scanning pressure values....85 Scanning software version....92 ■ Controller PCB......172 Scanning temperatures....68, 85 ■ Cross connect PCB......165 Scanning the fault display....35 ■ EEV PCB........178 Scanning the outside temperature long ■...
  • Page 187 Keyword index Keyword index (cont.) Start optimisation......118 Stop optimisation......118 Vitocom 100........109 Subscriber check.......95 Vitosolic 100........123 Subscriber number......144 Vitosolic 200........123 Summertime........143 Vitotrol 200A........136 Swimming pool heating....31, 101 System definition ■ Parameter group......98 Warning..........35 ■ Vitocom 100........109 Wintertime........143 System flow temperature sensor..111 System number........146 System scheme.........98 Telecontrol........109...
  • Page 188 Applicability Heat pump control unit Vitotronic 200, type WO1A Viessmann Werke GmbH&Co KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com Fax: +44 1952 675040...

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Vitotronic 200 wo1a

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