INSTRUCTION MANUAL INSTALLATION, COMMISSIONING & SERVICING WALL HUNG RSF GAS FIRED CONDENSING BOILER GREENSTAR 12Ri, 15Ri, 18Ri & 24Ri FOR OPEN VENTED AND SEALED CENTRAL HEATING SYSTEMS AND INDIRECT MAINS FED DOMESTIC HOT WATER THIS BOILER IS USED WITH NATURAL GAS OR LPG (Cat II 2H3P TYPE C13, C33 & C53) NATURAL GAS 12 Ri GC NUMBER: 41 311 63 15 Ri GC NUMBER: 41 311 75 18 Ri GC NUMBER: 41 311 77 24 Ri GC NUMBER: 41 311 65 LIQUID PETROLEUM GAS 12 Ri GC NUMBER: 41 311 64 15 Ri GC NUMBER: 41 311 76 18 Ri
INSTALLATION & SERVICING INSTRUCTIONS SYMBOLS USED IN THIS MANUAL: Domestic hot water Central heating Hot water storage cylinder PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATION. THESE INSTRUCTIONS ARE APPLICABLE TO THE WORCESTER APPLIANCE MODEL(S) STATED ON THE FRONT COVER OF THIS MANUAL ONLY AND MUST NOT BE USED WITH ANY OTHER MAKE OR MODEL OF APPLIANCE. THE INSTRUCTIONS APPLY IN THE UK/IE ONLY AND MUST BE FOLLOWED EXCEPT FOR ANY STATUTORY OBLIGATION.
SAFETY & REGULATIONS CONTENTS SAFETY PRECAUTIONS & SYMBOLS 2 INSTALLATION REGULATIONS 2 APPLIANCE INFORMATION SAFETY & REGULATIONS APPLIANCE INFORMATION GENERAL INFORMATION 3 TECHNICAL DATA 4 LAYOUT & COMPONENTS 5 PRE-INSTALLATION MAINS SUPPLY 7 WATER SYSTEMS & PIPEWORK 8 CONDENSATE PIPEWORK PRE INSTALLATION 6 9 BOILER LOCATION & CLEARANCES 10 PLUMBING MANIFOLD 12 FLUE OPTIONS 13 FLUE TERMINAL POSITIONS 14 INSTALLATION CLEANING PRIMARY SYSTEMS UNPACKING THE APPLIANCE 16 WAL
SAFETY & REGULATIONS SAFETY PRECAUTIONS INSTALLATION REGULATIONS IF YOU SMELL GAS: Current Gas Safety (Installation & Use) Regulations: All gas appliances must be installed by a competent person in accordance with the above regulations. Failure to install appliances correctly could lead to prosecution.
GENERAL INFORMATION STANDARD PACKAGE: A - Wall hung gas fired condensing boiler for central heating and indirect domestic hot water B - Wall plate C - Hardware literature pack (see check list) D - Tail pipes - water APPLIANCE INFORMATION E - Bottom Panel 270mm A B 590mm* C D *600mm to top of case front E 390mm Check List Hardware/Literature pack Item Qty Greenstar Ri Installation/Servicing Instructions............................................................ 1 Users Instructions ................
TECHNICAL DATA DESCRIPTION NATURAL GAS L.P.G. UNIT 12Ri 15Ri 18Ri 24Ri 12Ri 15Ri 18Ri 24Ri Max. rated heat output net 40/30°C KW 12.85 16.06 19.28 25.67 12.85 16.06 19.28 25.67 Max. rated heat output net 50/30°C KW 12.74 15.92 19.11 25.45 24.74 15.92 19.11 25.45 Max. rated heat output net 80/60°C KW 12.0 15.0 18.0 24.0 12.0 15.0 18.0 24.0 Max. rated heat input net KW 12.32 15.40 18.48 24.62 12.32 15.40 18.48 24.
The diagram opposite shows the controls in the servicing position and excludes the outer case, inner covers and fascia panel.
CLEANING PRIMARY SYSTEMS IMPORTANT: All the following Pre-Installation sections must be read and requirements met before starting boiler or flue installation. IMPORTANT: Debris from the system can damage the boiler and reduce efficiency. Failure to comply with the guidelines for the use of water treatment with the appliance will invalidate the appliance warranty. CAUTION: ISOLATE THE MAINS SUPPLIES BEFORE STARTING ANY WORK AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS.
MAINS SUPPLY ELECTRIC SUPPLY: • Supply: 230V - 50Hz, 50 watts not including pump. • This appliance must not be connected to a three phase supply. GAS SUPPLY: • Boilers using NG must be connected to a governed meter. • LPG boilers must be connected to a regulator. • Installation and connection of the gas supply to the boiler must be in accordance with BS6891. PRE INSTALLATION • Cable: PVC insulated 0.75mm2 (24 x 0.2mm) temperature rated to 90°C. • External 3A fuse to BS1362.
WATER SYSTEMS & PIPEWORK PLASTIC PI PEWOR K & U N DE R FLOOR HEATING: • Any plastic pipework must have a polymeric barrier with 600mm (minimum) length of copper pipe connected to the boiler. • Plastic pipework used for underfloor heating must be correctly controlled with a thermostatic blending valve limiting the temperature of the circuits to approx. 50°C.
CONDENSATE PIPEWORK IMPORTANT: • Ensure there are no blockages in the pipe run Visible air break at plug hole • Care should be taken when siting a soak-away to avoid obstructing existing services Sink with integral overflow 100mm • Condensate waste must not Insulation or increase pipe size 22mmØ plastic pipe be terminated into a septic tank or cesspit Open end of condensate drainage pipe directly into gully below grating but above water level 75 mm min.
SERVICING CLEARANCES VENTED COMPARTMENT BOILER LOCATION & 400mm 870mm This boiler is only suitable for installing internally within a property at a suitable location onto a fixed, rigid surface at least the same size as the boiler and capable of supporting the boiler weight.
BOILER LOCATION & CLEARANCES BATHROOMS: The boiler must be installed outside the shaded areas shown opposite. 1 1 2 2 Additional RCD (Residual Current Device) protection may be required. Refer to the latest IEE wiring regulations. PRE INSTALLATION (See Technical Data for IP ratings.
PLUMBING MANIFOLD Return Flow CONNECTIONS: Heating System: 22mm compression fittings* Gas: 22mm Use the 22mm copper pipes (A & B) provided with the appliance, as shown in the diagram opposite. Use the fittings supplied in the Lit/Hardware pack. PRE INSTALLATION • If the flow and return pipes are to be run behind the appliance it maybe an advantage to connect the pipes before hanging on the wall especially if space is limited.
FLUE OPTIONS High level horizontal flue with 2x90° bends The Greenstar series has the option of two horizontal RSF (60/100 telescopic and 80/125) flue systems and two vertical RSF (60/100 or 80/125) flue systems: The systems have different maximum flue lengths This page shows various fluing options with the straight flue lengths required to achieve the maximum flue length.
• • • • PRE INSTALLATION • • The flue must be fitted and terminated in accordance with the recommendations of BS5440 : Part 1. The flue must not cause an obstruction. Discharge and any noise from the flue outlet must not cause a nuisance. Flue gases have a tendency to plume and in certain weather conditions a white plume of condensation will be discharged from the flue outlet. Where this could be a nuisance, for example, near security lighting, an alternate position should be found.
PRE INSTALLATION FLUE TERMINAL POSITIONS 15 INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR Ri 8 716 115 168a (06/2008) FLUE TERMINAL POSITIONS
UNPACKING THE BOILER IMPORTANT: All the previous Pre-Installation sections must be read and requirements met before starting boiler or flue installation. LIFTING AND CARRYING PRECAUTIONS: • Lift only a manageable weight, or ask for help. • When lifting or putting things down, bend the knees, and keep the back straight and feet apart. • Do not lift and twist at the same time.
A FLUE OPENING 10mm Ø CAUTION: Ensure there are no pipes, electric cables, damp proof courses or other hazards before drilling. X6 SAFETY: All relevant safety precautions must be undertaken. Protective clothing, footwear, gloves and safety goggles must be worn as appropriate. CAUTION: Use appropriate mounting hardware to suit boiler weight and wall type. FIXING THE MOUNTING FRAME: • The boiler template shows the relative positions of the flue and pipes to the boiler.
OUTER CASE REMOVAL 1 REMOVING OUTER CASE 1. Undo and remove 2 screws (A) securing boiler casing at the top of the appliance. 2. Undo the 2 captive screws (B) securing boiler casing at the bottom of the appliance. 3. Pull case upwards. 4. Remove cardboard packing piece from appliance. With the outer case removed the appliance is suitable for a 1 man lift (<25kg).
A B BOILER CONNECTIONS CAUTION: ISOLATE TH E MAI NS GAS SUPPLY BEFORE STARTING ANY WORK AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS. CAUTION: Caps fitted to pipes must be removed before hanging the boiler. Do not lift by the air gas manifold Handling Holes B A A - flow (22mm) INSTALLATION GAS AND WATER CONNECTIONS: Remove template and secure the wall mounting plate to the wall with the fixings supplied.
FLUE INSTALLATION WALL 127mm NOTE: to ease assembly of flue components, apply silicone lubricant to sealing surfaces. Basic instructions for the 60/100mm diameter flue are shown below. 93mm Edge of case HORIZONTAL FLUE (60/100mm diameter) For vertical flues and 80/125mm horizontal flues, please refer to separate instructions supplied with the flue kit. MEASURING THE FLUE (Standard Flue): Measure from the outside wall to the centre line of the flue turret.
1 B A FLUE INSTALLATION C Installing the standard flue: D H E D B 1 Set the flue length to the distance required, secure with screw and seal joint with the aluminium tape supplied. Slide the inner wall seal (A) onto the terminal (B) as shown. If fitting from inside the building; slide the outer wall seal (C) onto the terminal (B) as shown. TOP 2 Remove the three screws (D, H) around the flue outlet (F) on the boiler. Check the boiler flue seal is correctly seated.
FLUE INSTALLATION This screw should be fitted last for easier installation 4 Assemble elbow to boiler using the three screws (see below). Note: Screws are in boiler not in flue kit. FITTING THE ELBOW: • Flue elbow should push directly down and not be twisted into correct position. Remove the 3 inner flue tube retaining screws. The inner tube will be held in place in the appliance. Fit turret onto appliance and retain with the three removed screws.
CONDENSATE CONNECTIONS CONDENSATE CONNECTION: Never terminate or discharge into any open source, including; sink, bath, shower, bidet, toilet etc. NOTE: Any external condensate pipework should be protected with weather resistant insulation to help prevent freezing. • Ensure that the condensate drain is 22mm diameter plastic pipe. It must fall at least 50mm per metre towards the outlet NOTE: Do not use solvents, adhesive or lubricant when pushing the pipe onto the rubber connector.
ELECTRICS CAUTION: ISOLATE THE MAINS ELECTRICITY SUPPLY BEFORE STARTING ANY WORK AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS The mains supply to the boiler must be either: • from a fused double pole isolator situated next to the appliance. The isolator must have a minimum of 3mm contact separation in both poles. or • from a plug and non-switched socket Use a 3A fuse in both situations. INSTALLATION Access to electric control panel: 1 Remove boiler casing to access control panel.
POSITION OF WIRED COMMISSIONING INSTALLATION COMPONENTS N PUMP N L PUMP L DIAGNOSTIC INTERFACE green 2 blue 2 red 2 violet 2 orange 25 INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR Ri 8 716 115 168a (06/2008) POSITION OF WIRED COMPONENTS
PRE-COMMISSIONING CHECKS A B CAUTION: ISOLATE THE MAINS SUPPLIES BEFORE STARTING ANY WORK AND OBSERVE ALL RELEVANT SAFETY PRECAUTIONS 1 Check that the service and water pipes are connected to the correct position on the manifold. A - Flow (22mm) B - Return (22mm) C - Gas inlet (22mm) 2 Check the gas type specified on the identification plate matches that of the gas supply. Turn on the main gas supply, check the gas pipework, connections and rectify any leaks.
FILLING THE SYSTEM A 4 B 1 Ensure all system and boiler drain points are closed. 2 If connected to an open vented system turn on the water supply to system header tank and allow to fill the system. 3 For sealed systems fill the system using a WRAS approved filling loop to a pressure of 1 bar. 4 Vent (A) any air from the boiler heat exchanger using a suitable container to collect any water. Ensure tube outlet (B) is directed away from the fan or any other electrical component to prevent any water damage.
STARTING THE APPLIANCE IMPORTANT: Never run the appliance when the appliance/system is empty or partially filled. Switching the appliance on/off: 1 Turn on mains power supply Turn on any external controls Set the thermostatic radiator controls to maximum temperature Set the clock/programmer to continuously ON and the room thermostat to maximum temperature 2 Turn control (A) from 0 (off position) to I (on position), after 2 seconds the power on indicator (B) illuminates BLUE.
WATER TREATMENT IMPORTANT: ARTIFICIALLY SOFTENED WATER MUST NOT BE USED TO FILL THE CENTRAL HEATING SYSTEM. IMPORTANT: Debris from the system can damage the boiler and reduce efficiency. Failure t o comply wit h t he guidelines for the use of water treatment with the appliance will invalidate the appliance warranty. ENSURE THAT THE SYSTEM HAS BEEN CLE AN E D AS ON PAG E 6 OF TH E S E INSTRUCTIONS. FLUSHING (Central Heating): Switch off the boiler.
COMMISSIONING 1 THE COMBUSTION FOR THE APPLIANCE IS FACTORY SET. NO ADJUSTMENT IS REQUIRED IF THE GAS INLET PRESSURE IS CORRECT. CHECKING GAS INLET PRESSURE: The inlet pressure to the appliance must be checked using the following procedure: A SETTING THE BOILER TO MAXIMUM: 1 Remove the three screws (A) retaining the control cover. • Clipped inside the cover is a plastic tool used to change the position of the mode switch (B).
FINISHING COMMISSIONING 1 The boiler has been factory set, so there should be no need to adjust any controls. 1 Install bottom panel. A The cut out in the bottom panel fits easily over the syphon elbow and outlet, however care should be taken not to disturb any sealed components. B Hook the lip at the back of the bottom panel over the angled edge at the base of the connections manifold. C Gently push up into position. Clip into place over the two lugs. C A 2 Replace outer casing.
INSPECTION AND SERVICE CAUTION: TURN OFF THE GAS SUPPLY AND ISOLATE THE MAINS S U P P LI E S B E FOR E STARTI NG ANY WOR K AN D OB S E RVE ALL RELEVANT SAFETY PRECAUTIONS. I M P ORTANT: Any service work must be carried out by competent registered engineers such as British Gas or Corgi registered personnel. IMPORTANT: AFTER REPLACEMENT OF ANY COMPONENTS ALWAYS CHECK FOR GAS SOUNDNESS WHERE RELEVANT AND CARRY OUT FUNCTIONAL CHECKS AS DESCRIBED IN COMMISSIONING.
1.1a 1.1b 1.2 INSPECTION AND SERVICE Component Access B 1. Removing outer case 1.1a Undo and remove 2 screws (A) securing boiler casing at the top of the appliance. 1.1b Undo but do not remove the 2 screws (B) securing boiler casing at the bottom of the appliance. 1.2 Pull case forward and remove. It is necessary to remove bottom tray if action 2 to 2.2 is done, this is retained by two screws at the front and hooks over the bottom frame work of the boiler. A 2.
INSPECTION AND SERVICE 1 Primary Heat Exchanger There is a special accessory kit available specifically designed for cleaning the heat exchanger. If required order 7 716 192 312. 3 Check fan pressure at the test point next to the fan using an electronic manometer The boiler must be run at maximum output. Pressure will read negative and be greater than: A NG B 12kW - 3.6 mbar LPG - 3.9 mbar 15kW - 5.5 mbar - 5.8 mbar 18kW - 7.4 mbar - 8.0 mbar 24kW - 3.1 mbar - 4.
INSPECTION AND SERVICE 1 COMBUSTION TESTING MUST BE CARRIED OUT BY A COM PETE NT PE R SON. IT M UST NOT BE ATTEMPTED UNLESS THE PERSON CARRYING OUT THE COMBUSTION CHECK I S E Q U I P P E D W ITH A C O M B U STI O N ANALYSER CONFORMING TO BS 7927 AND IS COMPETENT IN IT’S USE. B A IMPORTANT: IF THE JOINT BETWEEN THE AIR/GAS MANIFOLD AND THE HEAT EXCHANGER IS DISTURBED THE SEALING GASKET MUST BE REPLACED.
4 H 5 I INSPECTION AND SERVICE Remove electrical connector from fan. 4 Undo and remove securing nut (H) from the top of the heat exchanger. 5 Remove retaining plate (I). 6 Rotate fan and air/gas manifold assembly (J) around the top of the heat exchanger until it stops at the lug. Lift up assembly and remove from boiler. 7 Disconnect spark electrode and flame sensor connections (K). Remove clamping plate (L). Remove spark/flame electrode assembly from boiler.
R INSPECTION AND SERVICE 8 Small tab 8 Remove burner (M). Remove top baffle (N). Remove lower baffle (O). Remove the two hexagon headed screws (P) retaining the access cover (Q) on the sump. Access the heat exchanger flue ways by inserting the cleaning brush (7 716 192 312) through the top access hole in the casing (R). Clean heat exchanger flue ways (S) using the cleaning brush (7 716 192 312) removing any debris from the access point in the sump.
SETTING THE AIR / GAS RATIO I SOLATE MAI N S E LEC TR IC AL S U P P LY AN D R E MOVE OUTE R C AS E AS S HOWN I N TH E INSTALLATION, COMMISSIONING & SERVICING INSTRUCTIONS THE BOILER IS FACTORY SET. ADJUSTMENT OF AIR / GAS RATIO IS ONLY REQUIRED IF STATED IN THE SERVICING OR REPLACEMENT PARTS SECTION OF THE MAIN INSTRUCTIONS 1.1 A 1.1 Remove 3 screws (A) and cover (B) from control box. Clipped inside the cover is a plastic tool used to change the mode switch setting.
SETTING THE AIR / GAS RATIO FOR THE SIT 848.093 SIGMA THE SETTING OF THE GAS RATIO MUST BE CARRIED OUT BY A COMPETENT PERSON. SETTING OF THE GAS RATIO MUST NOT BE ATTE M PTE D U N LESS TH E PE R SON CARRYING OUT THE CONVERSION IS EQU I PPE D WITH A COM B USTION ANALYSER CONFORMING TO BS 7927 AND IS COMPETENT IN ITS USE. Max ‘C’ Min ‘D’ 1.3 THIS PAGE SHOWS THE SETTING PROCEDURE FOR THE SIT 848.093 SIGMA VALVE. FOR ALTERNATIVE DUNGS VALVE REFER TO PAGE 40 . 1. Setting the CO/CO2 Inlet test nipple 1.
SETTING THE AIR / GAS RATIO FOR THE DUNGS GB-ND 055 DO1 S20 THE SETTING OF THE GAS RATIO MUST BE CARRIED OUT BY A COMPETENT PERSON. SETTING OF THE GAS RATIO MUST NOT BE ATTE M PTE D U N LESS TH E PE R SON CARRYING OUT THE CONVERSION IS EQU I PPE D WITH A COM B USTION ANALYSER CONFORMING TO BS 7927 AND IS COMPETENT IN ITS USE. 1.3 THIS PAGE SHOWS THE SETTING PROCEDURE FOR THE DUNGS GB-ND 055 D01 S20 VALVE. FOR ALTERNATIVE SIT VALVE REFER TO PAGE 39 . D 1. Setting the CO/CO2 Inlet Test Nipple 1.4 1.
REPLACEMENT OF PARTS CAUTION: TURN OFF THE GAS SUPPLY AND ISOLATE THE MAINS S U P P LI E S B E FOR E STARTI NG ANY WOR K AN D OB S E RVE ALL RELEVANT SAFETY PRECAUTIONS. 1. Removing outer case 1.1 Undo 4 screws (A) securing boiler casing. 1.2 Pull case forward and remove. If it is necessary to remove bottom tray, this is retained by two screws (B) at the front and hooks over the bottom frame work of the boiler.
5.1 REPLACEMENT OF PARTS SIT AND DUNGS VALVE 5.2 The following components require the control to be moved in to the service position and the bottom tray removed: Gas valve Syphon PCB fuse Transformer A REMOVAL OF THE VALVE IS THE SAME FOR BOTH SIT AND DUNGS VALVES. THE SIT VALVE IS SHOWN IN THE DIAGRAM. B IMPORTANT: Do not replace the gas valve if a CO/CO2 analyser is NOT available. 6.1 5. Moving boiler control to service position 5.1 Remove two screws (A) securing control. 5.
REPLACEMENT OF PARTS 8 IMPORTANT: Do not replace the control unit if a CO/CO2 analyser is NOT available. 8. Access to boiler control components Move control to the service position. Remove 3 screws (A) and remove cover from control. A 9. PCB fuse Remove fuse in plastic housing (B) from the PCB and replace. There is a spare 2A fuse for F1 clipped into the cover. 10.Transformer / PCB Disconnect all electrical connections from the control.
12.1 REPLACEMENT OF PARTS A The following components require the air / gas manifold and fan assembly to be removed: Pressure switch Fan Electrode assembly Burner Heat exchanger 12.2 B 12.3 I M P ORTANT: I F TH E JOI NT BETWEEN THE AIR/GAS MANIFOLD AN D TH E H EAT E XCHANG E R I S DISTURBED THE SEALING GASKET MUST BE REPLACED. IMPORTANT: AFTER RE-ASSEMBLY THE COMB USTION M UST B E CH ECK E D USING THE PROCEDURE IN THE SECTION “SETTING THE AIR/GAS RATIO”.
REPLACEMENT OF PARTS 14.1 14.2 B A 14.3 15 14. Fan 14.1 Remove 3 screws (A) retaining mixing chamber. 14.2 Remove 2 screws (B) retaining the fan to the air/gas manifold. 14.3 Remove screw (C) retaining plate and remove. Re-assemble with new fan ensuring seals are correctly fitted. NOTE: After re-assembly, check CO/CO2 levels as described in the setting of the air/gas ratio section. 15. Electrode assembly C D E 16 Disconnect spark electrodes and flame sensor connection.
SHORT PARTS LIST 1 2 3 SIT 1 5 4 7 8 6 9 11 8 718 120 616 0 H26-537 8 718 120 616 0 H26-537 8 718 120 619 0 H26-538 8 718 120 619 0 H26-538 3 Gas valve 12Ri Worcester Part No. 12Ri GC No. 15Ri Worcester Part No. 15Ri GC No. 18Ri Worcester Part No. 18Ri GC No . 24Ri Worcester Part No. 24Ri GC No. 8 716 111 325 0 H26-539 8 716 111 325 0 H26-539 8 716 111 325 0 H26-539 8 716 111 325 0 H26-539 Control board Worcester Part No. GC No.
CAUTION: TURN OFF THE GAS SUPPLY AND ISOLATE THE MAINS S U P P LI E S B E FOR E STARTI NG ANY WOR K AN D OB S E RVE ALL RELEVANT SAFETY PRECAUTIONS. 1.2 1.1 B A GAS CONVERSION THE SETTING OF THE GAS RATIO MUST BE CARRIED OUT BY A COMPETENT PERSON. SETTING OF THE GAS RATIO MUST NOT BE AT T E M P T E D U N L E S S T H E P E R S O N C AR RYI N G O UT TH E C O NVE R S I O N I S EQUIPPED WITH A COMBUSTION ANALYSER C O N F O R M I N G TO B S 79 2 7 A N D I S COMPETENT IN ITS USE.
ELECTRICAL WIRING DIAGRAM 23 4 14 10 7 3 9 2 11 12 8 13 1a Mains Supply BOILER SWITCHED LIVE PUMP L 5 PUMP N 1 6 15 22 21 20 17 FAULT FINDING & DIAGRAMS 19 1. ST1, Terminal block, 230VAC mains supply. 1a. Control box earth connection. 2. Fuse F1 (T2A, H250V). 3. Boiler mains supply on/off switch. 4. Spark transformer. 5. Flame indicator. 6. ST2, Terminal block for pump & switched live. 7. Transformer connectors. 8. ST5, Fan 230VAC. 9. ST6, Diagnostic interface. 10.
FAULT FINDING NOTE : This fault finding information is for guidance only. Worcester cannot be held responsible for costs incurred by persons not deemed to be competent. The electronic control system for this boiler incorporates a blue central indicator. This normally confirms the permanent mains supply but, by flashing at different rates during a fault, provides a guide to the cause as listed. This fault finding system assumes that the appliance has been operating normally until the time of failure (i.e.
51 MAIN FUNCTION BLUE LIGHT ON Run autofroststat function Pump run 5 seconds every 24hrs Pump antiseize Fan to start speed. LOCKOUT Pump ON.
If in the unlikely event the boiler does not give complete satisfaction, before calling for a service engineer, the installer should check the following:No Central Heating but Hot Water OK Unlikely to be a boiler fault, please ask your electrician to check the external controls. No Hot Water but Central Heating OK Pack Number Unlikely to be a boiler fault, please ask your electrician to check the external controls.
