0117 964 0078, GAS SAFE is the trading name of Gas Safe Bristol Limited. The boiler will block during 4 attempts before going to a locking fault, EFThe boiler is operating at minimum burner load and there is a greater than 18C Flow & Return temperature difference, 260Sensor disconnected or no water content check the pressure gauge and repressurise the boiler to 1 bar, No CodeIf no code is shown but the boiler is still not operating, this could mean an airlock or reduced water content check the pressure gauge and repressurise the boiler to 1 bar, L1Flow Temperature Overheat or No Water Flow, F.49eBUS fault A short circuit on the eBUS, eBUS overload or two power supplies with different polarities on the eBUS, F.52Mass flow sensor connection fault. The boilers electronics are defective, F.64Electronics/NTC fault. 
As accredited installers of the three of the top tried and trusted boiler brands in the UK, Worcester Bosch, Vaillant and Ideal, we have provided a list of the most common fault codes below by brand. Electronics overheating due to external influences, electronics defective. Water pressure sensor and/or pump defective, air in the system, too low water pressure in boiler, F.76Overheating protection on primary heat exchanger. Registered in England & Wales. You may have to wait for the condensate to defrost. diff. their homes for over 30 years! Maximum temperature 105C, E9 Maximum temperature sensor on the main heat exchanger has failed, E9 Maximum temperature sensor on the main heat exchanger has not been recognised, EA Failure of four ignition attempts. Follow your manufacturers manual to do thisF75 (Vaillant) sensor change. If cancelled within 14 days, alternative payment of full outstanding balance must be made. baxi e25 boiler caldaie installazione impianti This usually requires you to top up your boiler. The boiler waits 30 seconds before another attempt is made, EA An established flame has been extinguished. 9U Problem with the code plug (faulty or not connected), C7 Fan not running / Fan not running or airflow blocked, D1 Sensor wet or damaged (the boiler will block for 300 seconds before this condition), E9 The main heat exchanger has overheated. Registration Number 06128525. The boiler waits 30 seconds before another attempt is made, An established flame has been extinguished.This could be caused by:moisture in the sump, due to a blocked sump/condensate trap.a strong wind into the flue, Flame not established during the first 4 seconds ignition period. Combustion quality outside the permitted range: Wrong gas restrictor, recirculation, wrong gas family, internal pressure measuring point in venturi blocked (do not use lubricant on O-ring in venturi.). Rear Office
baxi If you need a fast boiler repair, get in touch with Gas Safe today on Bristol:0117 964 0078Somerset:01934 811 566. Your email address will not be published. This can be used to identify the issue, cutting down on investigation time.Ableforce mainly install Worcester Bosch, Vaillant, and Ideal boilers. Experiencing problems with your Vaillant boiler? Company registered in England and Wales No. Block error if there is a blocking error, no data will be shown and your boiler will stop working. A1Not enough in the system check the pressure gauge and repressurise the boiler to 1 bar. Craig left everything clean and tidy and was helpul in explaining the controls. Cause code this is a 3 digit number shown when pressing the spanner / return button. Velocity Boiler Works is the sole marketer of Crown Boiler cast iron boiler products. Mass flow sensor faulty, filter below venturi filter cap wet or blocked, gas flow pressure too low. The Sensor Status screen shows the status of all sensors. Company Number 09477125. The boiler waits 30 seconds before another attempt is made, EAAn established flame has been extinguished. Our expert repairs team are on hand to diagnose the issue and get things working again in no time. The mass flow sensor is faulty, filter below venturi filter cap wet or blocked, gas flow pressure too low, F.54Gas pressure fault (in combination with F.28/F.29). The mass flow sensor is not connected/disconnected, plug not connected or incorrectly connected, F.53Mass flow sensor fault. The coding resistor on the PCB does not match the entered gas family. This could mean, wrong gas restrictor, recirculation, wrong gas family, internal pressure measuring point in venturi is blocked (do not use lubricant on O-ring in the venturi), or the gas family check has prematurely terminated. contr: UK link box is connected but the hot water NTC is not bridged, Fault: actoSTOR inlet sensor: Only in conjunction with F.91NTC defective, NTC cable defective, defective plug connection on NTC, defective plug connection on the actoSTOR electronicsSensor plug has short to earth to the casing, short circuit in cable har- ness, sensor defective, Fault: cylinder charging pump: Only in conjunction with F.91Cylinder is not fully charged after specified time. Check cylinder charging sensor and cylinder sensor Air in the actoSTOR pump Inspect cable harness for pump Check the impeller sensor and/or limiter in the product Diverter valve defective Secondary heat exchanger blocked Pump faulty, Fault: NTC temp. Alternatively, click here to get a new boiler quote. To help fix your Vaillant boiler problem, have a look below at each fault code: Short circuit on the eBUS, eBUS overload or two power supplies with different polarities on the eBUS. Combined, the two-digit numbers represent fault error codes described in the tables below: If values are too cold or too hot (below 28F above 246F e.g., a cold startup) boilers will typically display the 10,11,20, and 21 fault codes. 
sensor temperature gas o2 probe oxygen screw But even if it doesnt, passing the information in the code on to our engineer when you call will help them to understand what might be needed even before they arrive. "Very happy with the whole process from start to finish. incr. If the pipe runs outside,pour hot water over the pipeto defrost it, or use your hairdryer. Once youve established which fault error is relevant, you will need to refer to your boilers manual or visit the manufacturers website. UK link box is connected, but the hot water NTC is not bridged. Note that there are two kinds of error code on these boilers, locking errors that need the reset button to be pressed in order to continue, and blocking errors that will clear automatically. Not enough water in the boiler. All sensors in the boiler are a 12K sensor @77F or 25C curve. There is an error where the pump is not detecting water check pressure gauge and repressurise to 1 bar. too high: Break in plug connection for optional flue gas safety temperature limiter (STB), break in cable harness, Fault: Fuel valve not working: Gas valve stepper motor not connected, multiple plug on the PCB not plugged in correctly, interruption in cable harness, gas valve stepper motor defective, electronics defective, Safety switch-off: Flame simulation: Moisture on the electronics, electronics (flame monitor) defective, gas solenoid valve leaking, Start-up failure: Ignit. Ableforce Services Ltd is an Appointed Representative of Koze Group Ltd who are authorised and regulated by the Financial Conduct Authority. implausible: Flow and return temperature sensors returning implausible values. Flow and return temperature sensors have been inverted Flow and return temperature sensors have not been correctly in-stalled, Fault: NTCs fitted incorrectly: The flow and/or return temperature sensors have been installed on the same pipe/incorrect pipe. F.93Gas group fault. Mass flow sensor not connected/disconnected, plug not connected or incorrectly connected or an issue with its operation. Phone (215) 535-8900. Ground Floor, 26 Kings Hill Avenue, Kings Hill, West Malling, ME19 4AE. Electronic defective, F.62 Fault: Gas valve switch-off delay Delayed shutdown of gas valve. The two block sensors are identified by "1" or "2", and combined with a second value between 0 and 4. When a boiler stops working it generally shows a fault code, or error code. and Both will be useful resources for helping you to work out what the code is as well as provide helpful tips on how to fix it. Delayed extinguishing of flame signal. Flow temperature sensor defective, F.72 Flow/return NTC fault Flow/return NTC temperature difference too great flow and/or return temperature sensor defective, F.73 Water pressure sensor signal in the wrong range (too low) Interruption/short circuit of water pressure sensor, interruption/short circuit to GND in supply line to water pressure sensor or water pressure sensor defective, F.74 Water pressure sensor signal outside correct range (too low) Cable to water pressure sensor has short-circuited at 5V/24 V or internal fault in water pressure sensor, F.75 Fault, no pressure change detection when starting pump Water pressure sensor and/or pump defective, air in heating installation, too low water pressure in boiler; check adjustable bypass, connect external expansion vessel to return, F.76 Overheating protection on primary heat exchanger has responded Cable or cable connections for safety fuse in primary heat exchanger or primary heat exchanger defective, F.77 Flue non-return flap/condensate pump fault No response from flue non-return flap or condensate pump defective, F.78 Interruption to DHW outlet sensor at external controller -UK link box is connected, but hot water NTC not bridged, F.83 Flow and/or return temperature sensor temperature change fault When the burner starts, the temperature change registered at flow and/or return temperature sensor is non-existent or too small. No or too little gas supply pressure, gas valve closed, F.56Fault: Mass flow sensor regulation. oxygen measuring boiler robust system sensor accessories Understanding Types of Central Heating Systems, How to Bleed your Radiators on a Combi Boiler System, D1Sensor wet or damaged or disconnected (the boiler will block for 300 seconds before showing D1), E2Flow sensor shorted, damaged or disconnected, E9The main heat exchanger has overheated maximum temperature is 105C, E9Maximum temperature sensor on the main heat exchanger failed or has not been recognised, EAFour ignition attempts have failed. Worcester Bosch is the leading manufacturer of gas boilers in the UK and its systems are installed in lots of homes. Living is here to keep your life moving! UK Manufacturer Ideal has been producing boilers for over 100 years and offers good value and dependable units. This website uses cookies. As a pioneer of the Combi Boiler and still delivering high-quality products, many homes have a Vaillant Boiler installed to serve their heating and hot water requirements.
UK Manufacturer Ideal has been producing boilers for over 100 years and offer a great value and dependable reliability. too fast: Pump blocked, insufficient pump output, air in product, system pressure too low, non-return valve blocked/incorrectly installed, Safety switch-off: Flue temp.
sensor: The line to the water pressure sensor has a short circuit to 5 V/24 V or internal fault in the water pressure sensor, Fault: Pump/ water shortage: Water pressure sensor and/or pump defective, air in the heating installa- tion, insufficient water in the product; connect external expansion vessel to the return, Fault: Flue non-ret. The coding resistor on the PCB does not match the entered gas family. Gas family check prematurely terminated. Gas family check prematurely terminated.
Please enter your username or email address to reset your password. If you are in any doubt and the boiler has stopped working, then dont delay, call Gregor Heating on 0117 935 2400 today! E3 Sensor Open
Our, Worcester Bosch boiler problems: error and fault codes, Top 5 plumbing problems in old homes - and how to fix them, Top 5 plumbing problems and how to fix them. : DHW outlet sensor on ext. The boiler will block during 4 attempts before going to Locking fault, EF The boiler is operating at minimum burner load and there is a greater than 18C Flow & Return temperature difference, No Code Air lock or reduced water content check pressure gauge and repressurise to 1 bar, 260 Sensor disconnected or no water content check pressure gauge and repressurise to 1 bar, F.49 eBUS fault Short circuit on the eBUS, eBUS overload or two power supplies with different polarities on the eBUS, F.52 Mass flow sensor connection fault Mass flow sensor not connected/disconnected, plug not connected or incorrectly connected, F.53 Mass flow sensor fault Mass flow sensor faulty, filter below venturi filter cap wet or blocked, gas flow pressure too low, F.54 Gas pressure fault (in combination with F.28/F.29)- No or too little gas supply pressure, gas valve closed, F.56 Fault: Mass flow sensor regulation Gas valve defective, cable harness to gas valve defective, F.57 Fault during comfort safety mode Ignition electrode highly corroded, F.61 Fault: Gas valve regulation Short circuit/short to earth in cable harness for the gas valveGas valve defective (coils shorted to earth). Short circuit on the eBUS, eBUS overload or two power supplies with different polarities on the eBUS, Mass flow sensor not connected/disconnected, plug not connected or incorrectly connected, Mass flow sensor faulty, filter below venturi filter cap wet or blocked, gas flow pressure too low, Gas pressure fault (in combination with F.28/F.29), No or too little gas supply pressure, gas valve closed, Gas valve defective, cable harness to gas valve defective, Short circuit/short to earth in cable harness for the gas valveGas valve defective (coils shorted to earth), Delayed shutdown of gas valveDelayed extinguishing of flame signal, Supply or return NTC short circuited, electronics defective, Electronics overheating due to external influences, electronics defective, Implausible flame signal, electronics defective, Air in gas, gas flow pressure too low, wrong air ratio, condensate route blocked, wrong gas restrictor, ionisation flow interruption (cables, electrodes), flue gas recirculation, condensate route, Spare part case: Display and PCB replaced at same time and DSN not set, wrong or missing output range coding resistor, Flow temperature sensor signalling constant value:Flow temperature sensor incorrectly positioned at supply pipe, Flow/return NTC temperature difference too great flow and/or return temperature sensor defective, Water pressure sensor signal in the wrong range (too low), Interruption/short circuit of water pressure sensor, interruption/short circuit to GND in supply line to water pressure sensor or water pressure sensor defective, Water pressure sensor signal outside correct range (too low), Cable to water pressure sensor has short-circuitedd at 5V/24 V or internal fault in water pressure sensor, Fault, no pressure change detection when starting pump, Water pressure sensor and/or pump defective, air in heating installation, too low water pressure in boiler; check adjustable bypass, connect external expansion vessel to return, Overheating protection on primary heat exchanger has responded, Cable or cable connections for safety fuse in primary heat exchanger or primary heat exchanger defective, Flue non-return flap/condensate pump fault, No response from flue non-return flap or condensate pump defective, Interruption to DHW outlet sensor at external controller, UK link box is connected, but hot water NTC not bridged, Flow and/or return temperature sesnsor temperature change fault, When the burner starts, the temperature change registered at flow and/or return temperature sensor is non-existant or too small.Not enough water in the boiler, Flow and/or return temperature sensor not in correct position at pipe, Fault: Flow/return temperature sensor difference implausible, Flow and return temperature sensors return implausible valuesFlow and return temperature sensors have been inverted, Flow and return temperature sensors have not been correctly fitted, Fault: Flow and return temperature sensors incorrectly fitted, Flow and/or return temperature sensors have been fitted to the same pipe/wrong pipe. 
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