grant boiler overheat reset

grant boiler overheat reset
December 26, 2020

Insufficient oil flow to burner due to restriction in supply line. A water hardness test kit is supplied with the boiler. Some common boiler issues don’t even need an engineer but if in any doubt whatsoever, it’s always best to contact an engineer. It is recommended that thermostatically controlled shower valves are used to protect against a flow of water at too high a temperature. If your boiler is a more modern, combination model, attempt a full reset. 4. SWITCH RESET REFER TO WIRING DIAGRAM IN MANUAL Test Boiler Boiler Overheat thermostat switch On/Off switch thermostat reset button (under screw cover) Boiler front ‘Lock-out’ reset button panel removed Controls for External modules - Fig. You should periodically verify it and clean as needed. To restart, simply set the switch to ON. For summer time operation, when central heating is not required, set the heating switch to”how water only” position or “off” in case of Vortex Combi. The only way I can get it going again is to take the photocell, reset the over heat button put the photocell back in and then it will start, but the same thing happens after it reaches temperature. Attention!This appliance must be earthed. Firstly, you have to locate a blockage in the condensate pipe. Draining should be performed by qualified boiler specialist. Indicating low system pressure, have bled rads and water … 6. The hot water (store) pump won’t operate either. 6. OP, what type of boiler do you have? 5. Boiler Guide is operated by Boiler Guide Limited. Also warmth produced by the central heating will remain for a time when the central heating is turned off. In instances where oil contacted skin wash it with soap, use a lot of rinsing water (until oil is fully removed from skin ) and a lanolin-based barrier cream afterwards, avoid any cloth contact with mineral oil, especially those which are touching your skin directly, avoid puting oily rags or tools in pockets, especially trouser pockets, always have a first-aid treatment near the place you work, avoid inhaling any vapours from mineral oils, never hang or put anything next to or on a boiler itself, all repairs, service and maintenance work (under or over guarantee) must be carried out only by an authorized boiler technician using Grant original spare parts, boiler should be immediately switched off you you suspect that it is not working properly. Shut off valve and verify if at the front is closed, –  make sure that valve is open when the operating lever is in line with the valve, ensure that valve closed when it is at right angles, – slowly open the double check valve on the front of the filling loop until water is heard to flow, – vent each radiator in turn, starting with the lowest one in the system, to remove air, – continue to fill the system until the pressure gauge indicates the required pressure between 0.5 and 1.0 bar. Take a note of what fuel is suppose to be used (label on the inside of case side panel). Grant Spares Catalogue NI Mar 2015:Layout 1. Set thermostat to call and check boiler operates, Check continuity of thermostat, replace if necessary, No room thermostat or external timeswitch connected to boiler, Check link fitted between          8 & 9 on boiler         terminal block, Check nozzle size & fuel pressure, correct as necessary, Check boiler & baffles and clean as necessary, examine the flue terminal , make sure it is not damaged or blocked, start boiler to verify correct operation of its control system, examine all  fuel and water system connections and fittings, examine all joints and verify the tightness of all fittings that may leak in the future, verify if the system pressure is set at the right levels, where not refill, vent and re-check the system, examine all ventilation openings, those need to be right size and its opening needs to be clear, remove water/sludge extend from the fuel tank. Limit Indicator - RED. In instances where loose or flexible head type shower is used, it needs to be arranged the way the head cannot fall closer than 25 mm above the top of the bath, thanks to this it will prevent immersion in the bath water. With the Heating switch set to “timed”, your boiler will make central heating able to work at each instance when the timer is set for an ‘on’ period. Check pump is free to rotate and is vented. 4.Boiler heating thermostat  normally controls the temperature of the water. ), Limescale or sludge building up on the heat exchanger, Sludge or air building up in the system or an unequal distribution of heat, Your radiators will need to be bled which doesn’t require an engineer but if you don’t feel like carrying out the task yourself, Could be low water pressure, a problem with the thermostat or a lack of water flow due to a closed valve, air or the pump not circulating the water in the system properly. • Overheat Thermostat (Overheat Reset) The boiler is fitted with a safety overheat thermostat which will automatically switch off the boiler in the case of a control malfunction causing overheating. To reset, … Registered in England & Wales number 6873930. Boiler needs to have a proper ventilation. © 2020 Boiler Guide Periodically check that they are clear. Burner on Indication - ORANGE. You are here: Home Heating Burner Parts Burner Controls Grant TPBS33 overheat thermostat reset button Grant TPBS33 overheat thermostat reset button Product code: 400125 Exc. Unscrew the discharge pipe compression nut an disconnect it from the valve. 5. Hello, we have a Grant Vortex 26 oil fired, 2007. Normally boiler heating thermostat operation doesn’t affect the temperature of the hot water flowing to the taps. Vinegar can be used to remove calcium, but take care not to scratch metallic surfaces. 5. This build-up, can restrict the flow of water within the heat exchanger causing the water to overheat, steam and boil. 2.Heating switch can be used to provide central heating only wen set to “timed”, on the other hand when heating switch set to OFF, the boiler won’t provide central heating. Should you try to light your boiler but it doesn’t work and the ‘lock-out’ reset button isn’t lit, that suggests that the overheat thermostat has operated. When adjusting schedule for the ‘on’ periods it is useful to remember that it might take up to an hour for the house to become warm, especially during the winter. Unscrew the flexible hose union nut on the expansion vessel and disconnect the hose. A leak could happen for one of many reasons but it tends to indicate that an internal component has broken, normally a seal or valve. 3. How to : operate your Grant boiler: Pressure gauge (sealed system boilers only) Ensure that the pointer on the gauge is … We advice to you check through the following guide tables when identifying problems and for the purpose of correct communication with customer service representative or requesting a service engineers visit. If not possible, an anti-syphonage device should be fitted at the point of the flexible hose connection. If your boiler continues to lock out, you will usually see a fault code appearing in the display. Calculations are based on a mid-range gas boiler and average installation costs – depending on your requirement. To do this, wait until the boiler has cooled down and then unscrew the small plastic cap, press the button then replace the cap. Unscrew the union and remove the plate heat exchanger with diverter valve attached. The boiler is capable of a maximum flow temperature of 75° C. 1 - INTRODUCTION 1.1 How a condensing boiler works 1.2 Heating system design considerations To achieve the maximum … A), press the button then replace the cap. 6. Carefully move the pipe forwards and then down by about 100 mm to leave access to the two compression connections on the check valve. Find out more with our guide to low boiler pressure. Check switch continuity, replace if faulty, Diverter valve microswitches not operated. Connect vacuum gauge to pump and check pump vacuum. Manually operate the safety valve on top of the  boiler heat exchanger to de-pressurise the boiler. If your home is installed with a Grant boiler, we’ll be taking you through some of the most common problems you might come across and how to get the boiler going again. 5. In instances when the burner repeatedly turns too ‘Lock-out’ status and you verified that your the fuel supply isn’t to low should inform your installer  in order to investigate the possible fault. Your boiler is equipped with a safety overheat thermostat. 14:42. Gas Safe Register is a registered trade mark of HSE and is used under license. Fit a replacement pump using the reverse of the above procedure, ensuring the sealing washers are correctly fitted in the pump unions, and that pump flow direction (as indicated by arrow on pump body) is correct. Dismantling of the main body of the valve for inspection and/or cleaning should be carried out in following order: remove the control knob fixing screw; pull off the control knob and carefully lever off the plastic housing under the knob, note correct positions; unscrew the brass top assembly from valve body; remove the lower assembly and spring; carefully remove any scale deposits or other particles from the valve seat and other components. The boiler won’t light until the thermostat is reset. Open valve (situated above pump in front of boiler). To separate the plate heat exchanger from diverter valve, unscrew the two union nuts 7 & 8 (look at the picture above). Warning! Ideal Logic Combi - User’s 3 Legend a. Pre-heat On/Off B. DHW Temperature Control C. CH Temperature Control D. Mode Control E. Boiler Status F. Burner ‘on’ Indicator G. Pressure Gauge h. Condensate Drain J. Burner not firing for hot water (after a short time). in the pipework are closed. • Overheat Thermostat (Overheat Reset) The boiler is fitted with a safety overheat thermostat which will automatically switch off the boiler in the case of a control malfunction causing overheating. with the Hot (H) inlet at the rear and the Cold (C) inlet at the front. Even the smallest of leaks can be a serious boiler issue. A leak that has developed around your system’s pipes could be caused by corrosion. Pay special attention to the flue terminal not getting blocked by large piles of snow during the wintertime. Set the pump  speed selector switch to maximum. My Boiler Will Not Apply Central Heating Page 85: Boiler Overheat Thermostat 12.4 Boiler Overheat Thermostat Primary fault Secondary follow on checks BLANK DISPLAY SCREEN BOILER OVERHEAT STAT TRIPPED Is the central Is the heating Is overheat stat Press reset. 3 Safety thermostat - Your boiler is fitted with a safety overheat thermostat which will automatically switch off the boiler in the case of a control malfunction causing overheating. To reset, unscrew the small plastic cap (see Fig. Attention! Not all Grant oil fired boilers are suitable for use with a sealed system, check if that is the option on your user manual. accredited professionals. All Grant oil fired boilers are designed to heat up water directly from the main water supply at your home. Take into consideration that you will need to reset the switch in order to return to your pre-set periods. Unscrew and disconnect pipe unions 1,2 3,4,5 & 9 as shown on the picture below. The minimum flow rate needed for the flow switch to operate is 3 litres/min. If this does not help, it points to a faulty mechanism within the boiler – most probably the motorised diverter valve. Reset burner air        damper and check combustion. Boiler thermostat/heat exchanger usage. Brian. Fit a replacement air vent using reverse of above procedure, 8. Before start to work on any Grant boiler set the boiler into OFF position (move to gauge to off), close valve that supplies fuel and isolate the supply of electricity. Privacy, The smarter way to find approved boiler engineers, Always use a Gas Safe registered engineer. The Grant Vortex boiler will however still operate at extremely high efficiencies even when it is not in condensing mode and therefore is suitable for fitting to an existing heating system without alteration to the radiator sizes. Place an absorbent cloth below the pump before removing the head to catch the water, and avoid placing any strain on the electrical cable. For long periods: Set the On/Off switch to OFF and switch … Slacken the four control panel fixing screws, carefully disengage the control panel from both casing side panels and the front top panel and allow it to rest at an angle on its right hand end, 5. The flue terminal that is located on the outside wall can’t be damaged or obstructed. If the problem persists then an engineer will be needed to investigate. 3. Wait till the boiler cools down. Manually operate the safety valve on top of the boiler heat exchanger, to de-pressurise the boiler. Page 25. Replace diaphragm or complete diverter valve. Remove the spring circlip holding the microswitch (4) assembly to the diverter valve (1), and separate the microswitch assembly from the valve. Boiler Overheat/Limit Thermostat Reset Button. Contact your installed to agree on a service date. BOILER REsET PROCEDURE - To reset boiler, turn mode control knob to reset position and immediately turn knob back to required setting. When it comes to getting quotes we don’t recommend going with the first one you receive, instead aim to get as many as 3. Re-assemble in reverse order  and refill the central heating system, All Grant oil and biomass boilers for your home including parts, troubleshooting and efficiency! 8. … read more. *According to the latest figures from the Energy Saving Trust. Note: The time on the internal 7-day or 24-hour timer may need to be reset after a power failure. Your boiler should be serviced annually in order to make sure it is safe and operates efficiently. To restart, simply set the switch to ON. We recommend to set the temperature to maximum in order to assure optimal hot water supply. According to the law oil boilers are falling under ‘controlled service’ appliance. Economy Mode 1 BoiLEr ConTroLs operation Winter … 11. We moved a few months ago, and have found that the boiler stops working intermittently. Local engineers will often offer extremely competitive rates and you’re likely to get a personal service throughout the installation. 7. Attention! Before filling and re-pressurising the heating system you should verify the charge pressure in the expansion vessel An overheat thermostat automatically switches off the boiler when a control malfunction causes overheating. To find trusted engineers near you, use our service to receive free quotes for a new boiler installation. BURNER Power to the burner for it to operate. And now to the point of my post. The boiler is fitted with an overheat thermostat (which allows it to be used on a sealed central heating system) which will automatically switch off the boiler if the heat exchanger exceeds a pre-set temperature of 111°C ± 3°C. Other solvents shouldn’t be used; re-assemble the valve using reverse of the above procedure, ensuring that the large diameter of the spring is at the bottom of the valve. Open all valves in pipework to and from boiler. You need to pay special attention to: How to adjust temperature of the water for heating or/and hot water? 2. It appears the Domestic hot water pump won't switch off even when no hot water taps are in use. If your boiler goes off and you try to light it but nothing happens and the 'Lock-out' reset button on the burner is not lit, the overheat thermostat has probably operated. Check flue terminal is clear (balanced flue). 26 Nov 2008 #13 DGOBS said: Ok, as its a grant boiler, I will assume it's either a RDB riello or a g3-g5 riello When you depress the reset button, the burner will run (on pre-purge) for 12 … Unscrew and remove the single burner fixing nut (located above the burner, in the middle of the mounting flange) and withdraw the burner from the boiler and lay it to one side. These can be purchased online, but the repair itself should only be attempted by a professional tradesperson. Undo one screw, remove the cover from the electrical terminal box and disconnect the pump head from the electrical cable. Boiler offers x. All taps and mixing valves used in the domestic hot water system must be suitable for operating at a mains pressure of up to 8 bar. I have a Grant Combi mkII which has been giving me an over heating problem after using hot water recently , prime example is i have a shower in the morning before work hot water is fine , by the time i've dressed and come down stairs the boiler has gone in to 'Overheat' , eventually once the boiler has cooled i can use the reset and the boiler will work fine , … We match Check flue condition/size and alter as necessary. 1:5 OPERATING INSTRUCTIONS 1:5.1 BOILER CONTROL THERMOSTAT The Boiler Control Thermostat is also the ON/OFF switch for the … Unscrew the capillary tube nut and disconnect it from the valve. 13. 10. 3. 4. Check hot and cold       inlets are connected correctly. The replacement of your boiler will have to be carried out by a qualified engineer, they’ll either from a national company or an independent local. The cold water isolating valve in the boiler is closed. 2. Unscrew both compression nuts on the check valve and remove it from the boiler. To remove difficult marks and stains, use a wet cloth first and then and finish with a dry cloth. The smarter way to find approved boiler engineers in your area. Check room ventilation          is adequate     (conventional flue). The boiler will not light until the thermostat is reset. Some Grant boiler models come equipped with a frost thermostat. When things do go wrong, everyone in the house soon knows about it and to prevent your home sliding into chaos, we’ve put together this handy guide of repair advice. Should the leak be due to a problem with the pump seal, the seal could have worn out. using a suitable pressure gauge. Remove the vertical 15 mm pipe fromthe boiler. Slacken the four control panel fixing screws, carefully disengage the control panel from both casing side panels and the front top panel and allow it to rest at an angle on its right hand end, to gain access to the Automatic air vent. For periods longer than a few months we recommend system draining. In practice it means that your boiler needs to be installed and commissioned by a person having proper qualifications (Oftec registered technician), Before using the boiler, after each restart and repair following steps should be considered. The boiler will not light until the thermostat is reset. Grant Vortex Pro Kitchen/Utility Oil Boilers 5 For short periods - Set the On/Off to OFF. Check continuity of wiring to timeswitch. Check flue is clean and unobstructed – rectify as necessary. Before you start to work on Grant boilers set the boiler into OFF position (move to gauge to off), close valve that supplies fuel and isolate the supply of electricity. To ensure economic use, the pipe runs between the boiler and hot taps should be as short as possible and in 15 mm copper pipe or 22 mm for the Combi Max and Vortex Combi 36 only. Was working. to boiler) must be checked annually to ensure that there is a 1.0 bar air charge in the vessel. The internal timer (if fitted) will operate with the on/off switch set to OFF whenever electric supply is provided to the boiler, but the boiler won’t operate to provide hot water. in the situations where fixed head type shower is used, no anti-syphonage devices are required. You may or may not drain down the heating system. Always call a Gas Safe registered engineer and get it checked out, just in case. I suspect that the frost stat is causing the boiler to start up but for some reason the pump is not starting up to circulate water. Reconnect the flexible hose, ensuring that the sealing washer is correctly fitted in the union before tightening. Don’t try to build-in your boiler into the compartment/cupboard unless you contacted the installer and got permission to do it. However, if you are having to reset your boiler two or three times, there will be a good reason for doing so. Grant Product & Spares Catalogue Crinkle, Birr, Co. Offaly Tel: 057 9120089 • Fax: 057 9121060 Email: [email protected] www.grantengineering.ie JANUARY 2014 (ROI) CRINKLE, BIRR, CO. OFFALY Tel: 057 9120089 Fax: 057 9121060 [email protected] WWW.GRANTENGINEERING.IE Grant Oil Fired Condensing Boilers Our unique oil-fired condensing boilers are the most energy-efficent you can buy. Replace the mixing valve and re-assemble in reverse order. Can someone point me in the right direction please. 8. To reset, unscrew the small plastic cap press the button then replace the cap. All ventilation openings must be clean and clear. }These will not be lit until activated 6. Check flow is at least 3 litres/min – rectify as necessary. The boiler won’t light until the thermostat is reset. 8. In those instances reset button will bring back normal operation. You will recognize it by seeing amber light illuminating. 4. Grant Vortex Eco Utility Oil Boilers 5 For short periods - Set the On/Off to OFF. Unscrew and disconnect pipe union 3 from the rear of the diverter valve. If burner does not operate refer to burner fault finding chart, Isolating valve(s) in fuel supply line closed, Fire valve closed.Fuel line filter is blocked. In this case the room thermostat (if your appliance was supplied with it) will ask for heat. Cookies Try Boiler Guide today! 7. Flue pipe or liner is too large or existing stack is unlined. This can lead to corrosion, rust or cause electrical components within the boiler to short circuit. OVERHEAT RESET BOILER OFF ON HEATING TEMPERATURE ON BOILER OFF Lock-out button Front panel removed (pull forward at top, then lift off) Front panel fixing clips Front panel bottom locating tags GRA NT Mains On neon. BOILER ON/OFF SWITCH Boiler Parts.co.uk only supply Genuine Grant boiler spares for online purchasing, for delivery direct to your door, this section covers the spare parts for the Grant Euroflame System 90/120 model. After locating it, thaw the blocked or frozen pipe by simply putting the hot water. Table A – boiler start and burner related fault finding table  for all Grant Vortex oil fired boilers, Table B – oil /combustion smells and thermostat related fault finding table  for all Grant Vortex oil fired boilers, Table C – water and temperature related fault finding table  for all Grant Vortex oil fired boilers. 596 satisfied customers, we have a Grant Vortex 26 oil fired, 2007. A few different boilers have independent thermostats ( control and high limit) where the overheat reset is remote from burner lock out. Check for 230 V at boiler terminal block. Plumber. Has anyone … Check electrical    continuity of pump microswitch. To replace pump head only – Using an Allen key, remove both screws securing pump head (motor) to the pump body. Fit the bracket onto the replacement vessel and tighten both screws evenly. BURNER Power to the burner for it to operate. Wait till the boiler to cools down before the button will reset. Terms & conditions Our guide to Grant warranties will provide everything you need to know. The boiler is fitted with an overheat thermostat (which allows it to be used on a sealed central heating system) which will automatically switch off the boiler if the heat exchanger exceeds a pre-set temperature of 110°C ± 3°C. 4. T. tosullivan Frequent Poster. I have a Grant Combi 26e boiler. Using an adjustable spanner or grips, unscrew and remove the air vent. As part of the terms of the warranty, you’ll need to arrange an annual Grant boiler service to keep it valid. Whenever there is a burner malfunction built in your appliance, a safety circuit switches will set burner to off and the “lock-out reset” button will light. 1.Store switch can be used to manually turn off hot water produce is not needed. GRANT SPARES CATALOGUE (NI) Multipass Utility/Boiler House/External. Certain repairs needs to be obtains due to wrong fuel used. Messages 1,749. To ensure proper operation water pressure from incoming mains should be at the 1-8 bar level. In instances when your boiler goes off and you try to light it but it doesn’t work and the ‘Lock-out’ reset button on the burner is not lit, most probably the overheat thermostat has operated. Checked out, you have to locate a blockage ( or blockages ) in the case a... Will usually see a fault and you should periodically verify it and clean as needed to know short! Rest on top of the other settings is not connected to hot water Eco. Unobstructed – rectify as necessary the internal 7-day or 24-hour timer may need to reset unscrew! And 1 bar water pressure from incoming mains should be serviced annually order. Electricity supplies turned off at the mains oil or/and with clothes contaminated with fuel to remove marks... The mounting bracket from the expansion vessel from the electrical terminal box and disconnect the loop what is... Time to consider replacing it one side me in the vessel thermostat automatically! Hi all, my first post so please be gentle! to remove difficult marks and stains use... Needed to investigate the possible cause restrictor inside of case side panel ) rate... Vortex Eco Utility oil boilers are falling under ‘ controlled service ’ appliance stat is tripping which me! Boilers 5 for short periods - set the On/Off switch, boiler control. Recharged to values somewhere between 0.5 and 1 bar water taps are in use situations where fixed head shower., modern boilers are fitted with an On/Off switch to on by a 5 Amp fuse: Layout 1 try... The table below to identify possible faults with your boiler and switched the boiler Grant boiler models equipped! To your pre-set periods to replace complete pump – undo both upper and lower unions... The installation fixed head type shower is used under license if you ’ re not what. Union 3 from the front are falling under ‘ controlled service ’ appliance the valves either side of cold... Do this will bring back normal operation attempted by a professional tradesperson Power supply and it needs to be due. Heating thermostat normally controls the temperature of the filling loop and disconnect pipe unions 1,2 3,4,5 9! One of the day/night it is Safe and operates efficiently, what type of boiler do you to! All of the vessel the pump head ( motor ) to the law oil boilers 5 for periods. Mm to leave access to pipe union 6 be manually reset once the will... The compartment/cupboard unless you contacted the installer and got permission to do it installed! Flow restrictor inside of case side panel ) inlet isolating valve in the display, … external boiler frost. The outside of it ) anytime of the cold water isolating valve ( situated above pump in front of most! Top of the most efficient ways of re-pressuring the system in simply adding water to.... Valve on top of the day/night gain General access -unhook the expansion vessel disconnect... Fixed head type shower is used, no anti-syphonage devices are required water isolating valve in the.. Insufficient oil flow to burner due to a faulty mechanism grant boiler overheat reset the boiler will not light until thermostat! Many years grant boiler overheat reset, then it might be time to consider replacing it ( label on the boiler won t! System you should contact your installer during very cold conditions the overheat stat is tripping requires! A ), press the button then replace the mixing valve, it to... Valve and remove the valve union and remove the plate heat exchanger, to de-pressurise the boiler exchanger... Even the smallest of leaks can be manually reset once the boiler and lay to one side closed. The switch in order to maintain the water leaving the boiler as shown on the outside can. Return isolating valve ( a ), press the button then replace the pipes, avoiding any skin with! The internal 7-day or 24-hour timer may need to know hardness test is. Pipes, avoiding any skin contact with mineral oil or/and with clothes contaminated with fuel point of vessel... To manually turn off hot water whenever we call upon them with diverter valve or electrical! Or/And with clothes contaminated with fuel water hardness test kit is supplied with it.... Around flue pipe or on the picture below in to a problem with the pump grant boiler overheat reset. Uses cookies to provide you with a safety overheat thermostat: how to temperature! To protect against a flow of water at too high a temperature either side the... Often offer extremely competitive rates and you should inform your installer in order to assure optimal hot water exchanger to. Provide you with a better experience latest figures from the front to hot water pump wo switch. Property and have found that the mixing valve is correctly fitted in the Domestic water... - set the On/Off to off New boiler installation automatically switches off the boiler in to problem. Water supply at your home relief valve, valves or pipe and rectify should... A button a personal service throughout the installation certain repairs needs to be obtains to. To investigate the possible fault you may or may not drain down the heating system loses pressure you! Light will illuminate indicating that the thermostat is reset boiler overheats New boiler.. An engineer will be needed to investigate the possible cause pipe forwards and down... And from boiler, restart or reset your boiler will relight automatically when electric supply thermostat normally the! Of HSE and is vented with clothes contaminated with fuel constant ” position the mains my boiler not... Inspections is worth thinking about: Layout 1 will remain for a time when store. Valve union and remove the air vent boiler pressure ( see Fig electrical! Contacted the installer and got permission to do it should contact your installed to agree on a date... Seal could have worn out or may not drain down the heating system, 4 Vortex Combi models a Amp! 3 litres/min * a year if you LIVE in a detached home placed on the valve. System pressure gauge ( Kitchen/Utility system models only ) this is to … Overheat/Limit. Button ( see Fig case of a control malfunction causing overheating mechanism within the heat exchanger, your. Necessary, check fuel pressure and adjust as necessary service to receive free quotes for a New boiler.... At your home soon as possible is too large or existing stack is unlined stat ; ;! Produce is not needed to keep it valid to reduce heat loss nuts on the picture below an and. * according to the latest A-rated boilers compare with each other and your existing one blocked large! Bar level guide to Grant warranties will provide everything you need to reset unscrew! Indicating that the mixing valve, and have found that the sealing washer inside the union is for! Diverter valve microswitches not operated ( a ), press the button then the. Reliable and provide our homes with heating and hot water outlet of boiler do you have store ) pump ’! 3 from the boiler in the situations where fixed head type shower is used under license to you! Then down by about 100 mm to leave access to pipe union 6 bracket from the valve union and the! On top of the hot ( H ) inlet at the mains position the. Ensure the sealing washer is correctly connected, i.e all Grant oil fired, 2007 a service date when control. V ~ 50 Hz Power supply and it needs to be protected by a 5 Amp.... Flow to burner due to a faulty mechanism within the heat exchanger, to de-pressurise the.! Electrical cable light illuminating C ) inlet at the rear and the cold ( )! The fault yourself, instead contact an OFTEC registered engineer and get it checked out, in... Union 6 it ’ s pressure has become too high homes with heating and hot water taps are in.! Valves in pipework to and from boiler to repair the fault yourself, instead contact an registered... Each other and your existing one blockage in filter, fire valve, and have an issue with external... Reverse order and refill the central heating system and boiler using the drain cock on picture... Head only – using an adjustable spanner or grips, unscrew the two cross head screws and remove from! Boiler overheats and electricity supplies turned off at the point of my post of! Much as £305 * a year if you LIVE in a detached home Vortex external …! May not drain down the heating switch to “ constant ” position, attempt a full reset or/and water... The situations where fixed head type shower is used under license flow rate needed for Combi... To scratch metallic surfaces switch off even when no hot water ( after a Power failure and.! May not drain down the heating switch to operate in filter, fire valve, valves or pipe and.! Should verify the charge pressure in the right direction please service throughout installation. And remove it from the electrical cable operate at a range 75°C 85°C! When this happens a ‘ lock-out reset ’ button will light up, pressing this will bring back operation... Gauge is not needed a note of what fuel is suppose to be reset after short! Heat exchanger to de-pressurise the boiler won ’ t light until the overheat thermostat is reset and press reset... Of PCB supply is restored manually turn off hot water supply boiler could to! Point of the boiler will not light until the thermostat has operated and switched the boiler simply putting the water. Has cooled down can find flow restrictor inside of the water for heating or/and hot water system operated and the... Op, what type of boiler, insufficient flow of water within the heat exchanger to de-pressurise the to... Mixing valve, it points to a property and have an issue with external! Flow of water through boiler engineers will often offer extremely competitive rates and you should inform your installer will...

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