Related Manuals for Viessmann MPA51
Summary of Contents for Viessmann MPA51
- Page 1 VIESMANN Operating and service instructions for contractors Gas burner control unit replacement Type MPA51 with MPA5113 Gas burner control unit replacement Please keep safe. 5782 991 GB 1/2014...
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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, TRGI, risk of injury. - Page 3 Safety instructions Safety instructions (cont.) If you smell flue gas Danger The simultaneous operation of Danger the boiler and appliances that Flue gas can lead to life threat- extract air to the outside can ening poisoning. result in life threatening poison- ■...
- Page 4 Please note Repairing components that fulfil a safety function can compromise the safe operation of the sys- tem. Faulty components must be replaced with original Viessmann spare parts. Auxiliary components, spare and wearing parts Please note Spare and wearing parts that...
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Page 5: Table Of Contents
Index Index Operating instructions Burner control unit..................... Service instructions Diagnosis......................13 Flow diagram...................... 24 Connection diagram................... 26 Parts list......................27... -
Page 6: Burner Control Unit
Burner control unit Burner control unit Display and programming unit Function A display and programming unit is inte- grated into the burner control unit. The display screen shows the relevant oper- ating status, the service and parameter status, as well as any fault or error mes- sages. - Page 7 Burner control unit Burner control unit (cont.) Start Status Service Heat demand System tests Idle state check Status Service Fan ramp-up Status Service Valve check Pre-purge Status Service Pre-ignition Status Service Safety time Status Service Flame formation Status Service Flame stabilisation Operation with flame Status Service...
- Page 8 Burner control unit Burner control unit (cont.) Post-purge Status Service Standby Status Service Display Status Service (one digit) (two digits) Operating display in Current operating Display "FL" if a flame Page 6 standard mode condition/status signal is present and 8 Operating display for Message code "A"...
- Page 9 Burner control unit Burner control unit (cont.) Quality of the ionisation current Status Service Note Ionisation current > 50 is very good. If the value is lower, measure the ionisation current. The ionisation current should be > 3 μA. If not, check the ionisation cable and ionisation electrode.
- Page 10 Burner control unit Burner control unit (cont.) Manual mode and service display To call up the service display and for Display: manual mode, the control unit must be "d 0" Lower heating output issuing a heat demand. The service dis- "d 00"...
- Page 11 Burner control unit Burner control unit (cont.) 1. Press a. Status Service The operating phase under which the fault occurred is displayed under "Service" for as long as this key is held down. (Phase from "01" to "36". See flow diagram on page 24). 2.
- Page 12 Burner control unit Burner control unit (cont.) Status Service 2. Press S to call up the second most recent fault, up to the tenth most recent fault. Display under Fault "Status" Most recent fault Tenth most recent fault The relevant fault code is displayed under "Service".
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Page 13: Diagnosis
Diagnosis Diagnosis Faults with fault display on the display and programming unit (fault codes) Message codes Message System characteris- Cause Measures code tics Burner does not start Gas supply pres- Check gas flow pressure; sure too low; gas check gas pressure pressure switch switch switches off... - Page 14 Diagnosis Diagnosis (cont.) General process errors Fault Display System charac- Cause Measures teristics code F AA F AA Fan pressure de- Wind influence on Check flue outlet velops during the (chimney) air pressure switch idle state check F AA F AA Air pressure Air pressure Replace air pres-...
- Page 15 Diagnosis Diagnosis (cont.) Fault Display System charac- Cause Measures teristics code F A2 Burner control unit Interruption - safe- Check safety chain in fault state ty chain has been (strapping plug opened (strapping plug fJ) F A3 No password for Values in burner Enter password.
- Page 16 Diagnosis Diagnosis (cont.) Fault Display System charac- Cause Measures teristics code F A7 F A7 No flame signal Incorrect gas type Set correct gas during safety time; selected type (see ionisation flame Vitocrossal service monitor reports no instructions) flame signal F A7 F A7 No flame signal...
- Page 17 Diagnosis Diagnosis (cont.) Fault Display System charac- Cause Measures teristics code F A8 F A8 Flame extinguish- Incorrect gas type Set correct gas es during opera- selected type (see tion Vitocrossal service instructions) No flame signal Connections "L1" Check core alloca- during safety time;...
- Page 18 Diagnosis Diagnosis (cont.) Fault Display System charac- Cause Measures teristics code F A9 F A9 Flame extinguish- Incorrect parame- Replace and ena- es during stabilis- ter memory stick ble parameter ing time inserted memory stick F A9 F A9 Flame extinguish- Combustion char- Adjust the burner es during stabilis-...
- Page 19 Diagnosis Diagnosis (cont.) Fault Display System charac- Cause Measures teristics code F 4d F 4d Incorrect pass- Invalid password Check password word for parame- entered for mem- and memory stick. ter memory stick ory stick See installation in- structions, burner components.
- Page 20 Diagnosis Diagnosis (cont.) Fault Display System charac- Cause Measures teristics code F 42 F 42 No fan feedback Fan faulty; exter- Check cable nal power supply "100A"; check ex- to fan not connec- ternal power sup- ted or faulty; cable ply;...
- Page 21 Diagnosis Diagnosis (cont.) Fault Display System charac- Cause Measures teristics code F 54 F 54 PWM values in- EEPROM of Replace memory correct memory stick stick. I Danger modified or de- leted. Memory Plug-in termi- stick faulty nals on the burner control unit are 'live'.
- Page 22 Diagnosis Diagnosis (cont.) Internal system faults If the correct programme sequence can no longer be guaranteed, internal sys- tem faults occur. Fault Display System charac- Cause Measures teristics code 01, 02, 05 01, 02, Fault in burner Internal system Replace burner to 0d, 0F, 05 to 0d, control unit area...
- Page 23 Diagnosis Diagnosis (cont.) Fault Cause Measures Whining noises Incorrect CO set- Adjust burner according to the informa- tion in the Vitocrossal service instruc- tings; insufficient or tions. excessive air content too Incorrect setting Check that the burner has been set for the correct gas type, change gas restric- tor if required (see Vitocrossal service in- structions).
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Page 24: Flow Diagram
Flow diagram Flow diagram... - Page 25 Flow diagram Flow diagram (cont.) After the controller issues a heat demand, the following program sequence will be run: Phase Duration Fault 0 ... Waiting for heat demand 0 ... Fan idle state check max. 2 min Air pressure switch idle state check max.
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Page 26: Connection Diagram
Connection diagram Connection diagram A Burner control unit MPA5113 L Solenoid valve stage 1 (BV 1) B Vitotronic control unit M Servomotor for rotary damper C Fan motor with PWM control and B2 Safety chain jumper feedback F1 MCB/fuse D Flame monitoring by means of ioni- F2 MCB/fuse sation current F6 High limit safety cut-out... -
Page 27: Parts List
Parts list Parts list When ordering spare parts: Standard parts are available from your local supplier. Pos. Spare part Part no. 1001 Burner control unit 7831294 1002 Display and programming unit for burner control unit 7828881 1003 Cable entry for burner control unit 7828882 1004 Parameter memory stick... - Page 28 7311947 7831294 7831433 7311948 7831294 7831434 7311949 7831294 7831435 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...