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User instructions Wall hung RSF gas fired condensing combination boiler Greenstar CDi Compact For sealed central heating systems and mains fed domestic hot water These appliances are for use with: Natural Gas or L.P.G. (Cat. II 2H 3P type C13, C33 & C53) Model GC Number Natural Gas 28CDi Compact...
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There is also the reassurance of our parts and labour guarantee - backed up by Worcester Total Cover, an optional complete maintenance scheme to keep your appliance operating at peak condition and efficiency.
Key to symbols and safety instructions A step in an action sequence Key to symbols and safety instructions A sequence of defined actions or steps carried out in order to complete a task. Key to symbols ▶ Action ▶ Next action Warnings ▶...
The service record will show a potential purchaser Worcester, Bosch Group accepts no liability arising from any that the heating system has received regular professional such actions. This does not affect your statutory rights.
12 Hot water temperature control 6 Central heating temperature control 13 Diagnostic port* 7 Scroll up button 8 OK - Select/confirmation button 14 Central heating system pressure gauge * for Worcester service engineer use only Greenstar CDi Compact - 6 720 813 277 (2014/09)
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°C The example shown is H13 Service interval reached, the boiler requires servicing. °F Call your installer or Worcester Bosch Group to H 13 organise a service visit. Greenstar CDi Compact - 6 720 813 277 (2014/09)
Controls Operating the boiler 3.1.1 Boiler display This is typical of the display when the boiler is not supplying a central heating or hot water demand. The display will not be backlit and the internal temperature of the boiler is displayed. When heat is demanded and the boiler fires up, the flame symbol will be displayed.
Controls 3.1.3 Boiler frost protection If you are leaving your property unoccupied during cold weather, please leave your programmer on constant and your room thermostat set to 15°C. ▶ If the temperature within the boiler falls below 8°C the pump will run to circulate water and prevent the system freezing. –...
Controls 3.1.7 Domestic hot water preheat mode manual activation (Eco mode off) Eco mode is enabled by default and the PreHeat can be can be enabled. 1. Press and hold for at least four seconds to enter the PreHeat mode, when preheat mode is active, “PreHeat” will be displayed.
Optimum system pressure when your boiler is cold (area A) ▶ Use the Worcester integral filling link supplied with the boiler to re-pressurise your boiler, refer to the following section 4.2. NOTICE: To comply with the Water Authority regulations you must remove the “filling key” or disconnect the external filling loop after re-pressurisation.
System Pressure Using the Worcester integral keyed filling link Locate the filling key and follow the instructions for re-pressurising. 1. Push the filling key firmly into the body of the filling link, ensuring the arrow on the key shaft lines up with the open padlock symbol.
Service clearances Service clearances Your installer will have provided adequate space around the boiler for safety and servicing access. CAUTION: Restricted space. The boiler may overheat. ▶ Do not restrict this space with the addition of cupboards, shelves etc. next to the boiler. NOTICE: Combustible and corrosive materials: Chemically aggressive substances can corrode the appliance and invalidate any guarantee.
If your Greenstar gas-fired appliance should fail to operate correctly or requires servicing, please contact the Worcester, Bosch Group Appointments Team (see rear cover for details).
In the event that the appliance stops functioning or does not perform as expected, please see table below These problems are some of the most common causes. Should the problem persist or if other fault codes are displayed, then it will be necessary to contact Worcester, Bosch Group. This table gives information on basic operating system problems.
Worcester, Bosch Group for further assistance. When calling Worcester, Bosch Group about a fault, it will be useful to quote the alert code and three digit number under the alert code, e.g. EA and 227. If there is a fault that cannot be reset by you, the user, then a service engineer visit will be necessary.
Hot water, but not boiling, can also be poured onto the pipe from a watering can or similar container. Care must be taken at pedestrian areas where this water may freeze and create a slip hazard. ▶ Worcester, Bosch Group have available on our website helpful videos in the Customer service section to aid in thawing a frozen pipe.
In the case of a suspected fault, refer to the fault finding section of this guide. In the event of a boiler fault or breakdown please contact Worcester, Bosch Group appointments team on 0330 123 9339. Your advisor will arrange for an engineer to call with the minimum of delay; under normal circumstances this will be from 1 - 3 working days (excluding weekends and bank holidays) for priority breakdown situations (no hot water and/or heating).
Tips on energy saving Tips on energy saving Heating economically The appliance provides a high level of comfort whilst keeping gas consumption low and so minimising the environmental impact. The gas supply to the appliance‘s burner is regulated according to the demand for heat. The appliance operates with a low flame if the demand for heat reduces.
Your Greenstar boiler carries a guarantee against faulty material or manufacturer subject to Terms and Conditions. To read the full Terms & Conditions please visit us on-line at www.worcester-bosch.co.uk/guarantee. The Guarantee Registration form is available on this same page and can be completed and submitted electronically.
Glossary Glossary Central heating systems All radiators must be heated at an even rate. If the top of a radiator is at a lower temperature than the bottom then it should be bled by releasing air through the bleed screw at the top of the radiator. Ask your installer to show you how this is done.
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