2. E&OE. 1:5 OPERATING INSTRUCTIONS 1:5.1 BOILER CONTROL THERMOSTAT The Boiler Control Thermostat is also the ON/OFF switch for the … Unscrew the flexible hose union nut on the expansion vessel and disconnect the hose. Should you be in any doubt at all about what’s wrong with your boiler, use our free service to get quotes from reliable engineers near you. Fortunately, modern boilers are fitted with safety features that mean the unit will lockout before the boiler overheats. How to re-pressurise the system by adding water? If your boiler continues to lock out, you will usually see a fault code appearing in the display. 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. Check hot and cold inlets are connected correctly. with the Hot (H) inlet at the rear and the Cold (C) inlet at the front. 9. Unscrew the plastic cap and press the reset button (see right). 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. To restart, simply set the switch to ON. Check flue draught and improve flue as necessary. Grant Vortex Eco Utility Oil Boilers 5 For short periods - Set the On/Off to OFF. It’s a good idea to keep an eye on your boiler’s pressure gauge quite often, because low boiler pressure can lead to your central heating system failing to function properly. 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. It is not a Combi boiler and happens at anytime of the day/night. When the store switch is set to OFF position, the burner will not fire in order to maintain the water temperature. I have a grant euroflame 50/70 (oil feuled boiler) and when the boiler reaches temperature it shuts off fine but as it cools down the pump starts up again but the boiler won't fire up and it goes into lockout. to boiler) must be checked annually to ensure that there is a 1.0 bar air charge in the vessel. To reset, … 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. However, if you are having to reset your boiler two or three times, there will be a good reason for doing so. How to maintain your Grant boiler Wait till the boiler to cools down before the button will reset. Check room ventilation is adequate (conventional flue). T. tosullivan Frequent Poster. Re-assemble in reverse order and refill the central heating system. Whenever water pressure falls down (in yourthe heating system) under the value of 0.2 bar your appliance will activate automatic special function called cut-out switch for too low pressure. 6. Don’t use abrasive pads or cleaners. 3. Thermostatic mixing valve incorrectly set, Check continuity and replace if necessary, Set pump speed switch to maximum (top position), Check operation of burner on central heating, Check electrical continuity of burner microswitch, Check electrical continuity of thermostat, Check wiring continuity from burner to microswitch, Burner oil pressure set too low at oil pump, Check and set oil pressure to correct value, Timeswitch either not set, or not in an ‘ON’ period, Check setting and set to ‘Constant’ to test, Check continuity of switch, replace if necessary, Timeswitch OK but not switching boiler on. Most Grant boilers come with a 3 year warranty, but they can extend to as long as 5 to 10 years when they’re installed by a G-One accredited installer. Unscrew and disconnect pipe union 3 from the rear of the diverter valve. 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. 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. Close the primary return isolating valve (B) and the pump isolating valve as shown on the picture above. After locating it, thaw the blocked or frozen pipe by simply putting the hot water. If the problem persists then an engineer will be needed to investigate. Note: The time on the internal 7-day or 24-hour timer may need to be reset after a power failure. The boiler thermostat has set to operate at a range 75°C – 85°C. We had one guy come to look at our heating system in general, and he saw the problem occur, and suggested that the pump may be on its way out due to its a… Whenever total hardness of the water supply exceeds 125 ppm, an in-line scale inhibitor should be installed in the cold water supply to the boiler. It appears the Domestic hot water pump won't switch off even when no hot water taps are in use. The maximum temperature of the central heating water is 85°C for the Combi V3 and Combi Max and 80°C for the Vortex Combi models. Your boiler is equipped with a safety overheat thermostat. 5. The cold water isolating valve in the boiler is closed. 9. To restart, simply set the switch to ON. 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. Up to 97% … Hi All , My first post so please be gentle!. 3.Boiler on/off switches can also be used for setting heating or/and hot water. Warning! 3. The boiler will not light until the thermostat is reset. 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 , … 3. BURNER Power to the burner for it to operate. The temperature of the water leaving the boiler to the radiators can be increased by turning the boiler (heating) thermostat clockwise. Our guide to Grant warranties will provide everything you need to know. To check the boiler pressure, simply take a look at the built-in pressure gauge, if you see anything below 1 then you may have an issue. Open the pump isolating valve and the primary return valve, then refill the central heating system as described in section 5.2, checking for leaks. 4. Check flue terminal is clear (balanced flue). 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. Check if your appliance is equipped with frost protection (optional), whenever it is not the case it is recommended to leave the boiler on with the boiler thermostat set at a low setting, instead of switching off the boiler. Find out more with our guide to low boiler pressure. To reset the overheat thermostat, unscrew the small plastic cap marked “overheat reset” (see Figure 1-1), press the button and If this condition continually repeats, contact your service enigneer. You may or may not drain down the heating system. Check switch continuity, replace if faulty, Diverter valve microswitches not operated. Reconnect the flexible hose, ensuring that the sealing washer is correctly fitted in the union before tightening. 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. Can be manually reset once the boiler : has cooled down. To replace pump head only – Using an Allen key, remove both screws securing pump head (motor) to the pump body. Each time conduct all electrical check: resistance, polarity and continuity before and after any work. Where possible the pipework should be insulated to reduce heat loss. 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. VAT Inc. VAT. Not all Grant oil fired boilers are suitable for use with a sealed system, check if that is the option on your user manual. Boiler Overheat/Limit Thermostat Reset Button. Set the pump speed selector switch to maximum. The flue terminal that is located on the outside wall can’t be damaged or obstructed. 3. The boiler will not light until the overheat thermostat is reset. Page 6 TEST SWITCH 14:42. Boiler Guide is operated by Boiler Guide Limited. 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. Check and set switch to ‘Constant’ to test. Lastly, restart or reset your boiler by pressing a button. 3. Page 25. 7. Remove the spring circlip holding the microswitch (4) assembly to the diverter valve (1), and separate the microswitch assembly from the valve. 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. I've recently moved in to a property and have an issue with an external Grant Pro boiler. Carefully move the pipe forwards and then down by about 100 mm to leave access to the two compression connections on the check valve. Take a note of what fuel is suppose to be used (label on the inside of case side panel). Burner on Indication - ORANGE. 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. If a conventional flue is fitted to the boiler, unhook the flexible air inlet tube from the hook bracket on the crossmember, and remove the hook bracket from the boiler crossmember. Fit a replacement air vent using reverse of above procedure, 8. 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. Overheat thermostat reset button (under screw cover) Boiler thermostat ‘Lock-out’ reset button Boiler front panel removed Grant Euroflame Condensing External Modules5 Switch off the electricity supply to the boiler. To access the controls, open the lower … Taking out insurance can be done with your energy supplier but there’s absolutely no obligation to do so. Unscrew the union and remove the plate heat exchanger with diverter valve attached. If you’re not sure what it means, take a look through our comprehensive list of Grant error codes. Check electrical continuity of pump microswitch. Pay special attention to the flue terminal not getting blocked by large piles of snow during the wintertime. • 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. The system will need be recharged to values somewhere between 0.5 and 1 bar. Attention! 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. 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. Some common boiler issues don’t even need an engineer but if in any doubt whatsoever, it’s always best to contact an engineer. Remove the vertical 15 mm pipe from the boiler to gain access to pipe union 6. Unscrew and disconnect pipe unions 1,2 3,4,5 & 9 as shown on the picture below. To maintain a longer and more consistent hot water temperaturethe factories fitted a flow restrictor to all Grant models (Vortex Combi 36 and Combi Max are the only exceptions) The purpose of flow resistor is to reduce the flow rate to 15 litres/min. Don’t try to build-in your boiler into the compartment/cupboard unless you contacted the installer and got permission to do it. Overheat thermostat: Automatically cuts the burner out if the boiler overheats. Warning! When refilling the system following precautions need to be taken care of: – add water to the system only when the boiler is off and the system it is cold, pay attention no to overfill, – make sure a flexible filling loop is properly connected, ensure that open position of flexible filling loop to the boiler. your requirements with pre-screened companies to ensure you’re only contacted by trusted & The boiler will not light until the thermostat is reset. Step 5: Check the fault code. using a suitable pressure gauge. OVERHEAT Boiler overheat thermostat has operated and switched the boiler off. My Boiler Will Not Apply Central Heating Before filling and re-pressurising the heating system you should verify the charge pressure in the expansion vessel Safety switches will switch the burner off whenever there’s a burner malfunction in your appliance. If not possible, an anti-syphonage device should be fitted at the point of the flexible hose connection. Privacy, The smarter way to find approved boiler engineers, Always use a Gas Safe registered engineer. Attention! In instances when pressure exceeds 8 bar reducing pressure valve usage is recommended.The boiler may still operate down to a pressure of 1.0 bar but with a reduced flow rate. There could also be an … To reset, unscrew the small plastic cap press the button then replace the cap. No special material needed. 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. 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. Hello, we have a Grant Vortex 26 oil fired, 2007. You should periodically verify it and clean as needed. Broken diaphragms and airlocks, failure of motorised valves, issues with the thermostat or low water levels, Most likely to be a broken internal component but it will depend where the water is leaking from, Air in the system could be causing this, otherwise it could be that the water pressure is too low, Could be a water leak in the system, the pressure relief valve needs replacing or due to recently bleeding radiators, This fault should be displayed on your boiler as an error code or warning notification, Thermostat could be turned off or not set to the correct settings (time etc. Fit the replacement pump using the reverse of the above procedure, ensuring that the new gasket is correctly fitted between the pump head and body. We moved a few months ago, and have found that the boiler stops working intermittently. BOILER REsET PROCEDURE - To reset boiler, turn mode control knob to reset position and immediately turn knob back to required setting. Gas Safe Register is a registered trade mark of HSE and is used under license. Find the best boiler for your needs, or see how the latest A-rated boilers compare with each other and your existing one. Check flow is at least 3 litres/min – rectify as necessary. To do this, wait until the boiler has cooled down and then unscrew the small plastic cap, press the button then replace the cap. There is a blockage (or blockages) in the pipework. Page 5: Notes About your fuel must not be obstructed. Faults with your Grant boiler are displayed as an error code on the display screen. external boiler; frost stat; grant; overheat; wiring box; andy R New Member. Messages 1,749. Replacing your boiler could lead to savings of as much as £305* a year if you live in a detached home. When this happens, a red neon light will illuminate. 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 … 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. Check that an extract fan is not pulling combustion gases from burner, Check all joints and flexible hose for leaks, Check gasket, re-tighten nuts or replace gas, Burner not correctly fitted on mounting flange, Remove and re-fit burner ensuring correct fitting, Check and replace ‘O’ ring as necessary, Thermostat sensor not connected to PCB (Vortex Combi only), Mains water supply is not connected to cold water inlet of boiler, One or more isolating valves, stop cocks, etc. Open all valves in pipework to and from boiler. 4.Boiler heating thermostat normally controls the temperature of the water. To remove difficult marks and stains, use a wet cloth first and then and finish with a dry cloth. We recommend to set the temperature to maximum in order to assure optimal hot water supply. Brian. We match Indicating low system pressure, have bled rads and water … 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. Take a look at the table below to see how much you could be saving depending on your current boiler rating and property. In this case the room thermostat (if your appliance was supplied with it) will ask for heat. Quantity Add to order Check stock availability. 7. Unscrew the two other unions 11 and 12 on the mixing valve, and remove valve from the boiler as shown on the picture. Periodically check that they are clear. Whenever you will need central heating actually working during normal ‘off’ periods, set the heating switch to “constant” position. Mains Indicator- ORANGE }These will not be lit until activated 5. Insufficient oil flow to burner due to restriction in supply line. The control panel is fitted with an ON/OFF … If your boiler is a more modern, combination model, attempt a full reset. Economy Mode 1 BoiLEr ConTroLs operation Winter … Cookies 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! Manually operate the safety valve on top of the boiler heat exchanger, to de-pressurise the boiler. 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. If the leak stems from your pressure relief valve, it is likely that your system’s pressure has become too high. You will recognize it by seeing amber light illuminating. Only show branches with stock available now. How to : operate your Grant boiler: Pressure gauge (sealed system boilers only) Ensure that the pointer on the gauge is … Terms & conditions For long periods: Set the On/Off switch to OFF and switch … To replace complete pump – Undo both upper and lower pump unions, noting the correct direction of flow (downwards). Vinegar can be used to remove calcium, but take care not to scratch metallic surfaces. When this happens a ‘lock-out reset’ button will light up, pressing this will bring back normal operation. … read more. Boiler offers x. In those instances reset button will bring back normal operation. 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. For everyday cleaning simply use a dry cloth. Gain General Access -unhook the expansion vessel from the front of the boiler and lay to one side. 4. Manually operate the safety valve on top of the boiler heat exchanger to de-pressurise the boiler. Wait till the boiler cools down. 8. You may or may not drain down the heating system. Replace the mixing valve and re-assemble in reverse order. You can find flow restrictor inside of the cold water inlet of the isolator valve (placed on the outside of it). Drain the central heating system and boiler using the drain cock on the boiler. 5. Check continuity of overheat thermostat – replace as necessary. Plate heat exchanger and diverter valve replacement. To ensure proper operation water pressure from incoming mains should be at the 1-8 bar level. 6. Draining should be performed by qualified boiler specialist. Grant Vortex External modules … 6. Your boiler will relight automatically when electric supply is restored. For long periods: Set the On/Off switch to OFF and switch off the … 6. Insufficient combustion air supply to burner. You can also use “constant” option and then boiler will provide central heating continuously, over-ruling all of the other settings. The control panel is fitted with an ON/OFF switch, boiler thermostat control knob and the manual reset button for the overheat thermostat. 4. 5. The boiler will not light until the thermostat is reset. Always call a Gas Safe registered engineer and get it checked out, just in case. 7. }These will not be lit until activated 6. 8. 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. Failure to do this will invalidate the boiler warranty. 6. }These will not be lit until activated 4. The Grant Combi 90 MkII limit thermostat or also know as the overheat thermostat is To stop the boiler from firing too often, aqua stats have a high limit temperature and a low limit. An overheat thermostat automatically switches off the boiler when a control malfunction causes overheating. These can be purchased online, but the repair itself should only be attempted by a professional tradesperson. 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. 5. In instances where the problem found be other than with the appliance Ideal service engineer will a charge for the visit if your boiler is out of warranty period. 13. Even the smallest of leaks can be a serious boiler issue. To find trusted engineers near you, use our service to receive free quotes for a new boiler installation. 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. Check for 230 V at boiler terminal block. Check continuity of wiring to timeswitch. Has anyone … The smarter way to find approved boiler engineers in your area. 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. 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. 10. Use the table below to identify possible faults with your boiler. If required, the fuel supply valve may be closed and the water and electricity supplies turned off at the mains. 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. 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. 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. Reset burner air damper and check combustion. A), press the button then replace the cap. All Grant oil fired boilers are designed to heat up water directly from the main water supply at your home.
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