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Fault Finding Codes
Fault finding codes for the CI range
Fault finding codes for the CI range Codes Description F1 Ignition fault F2 Fan/APS F4 Ignition fault F5 Overheat Fault F6 Central heating flow thermistor F7 Domestic hot water thermistor F8 Tank thermistor (N/A For this appliance) F9 Water pressure sensor fault (please contact GW technical department for further information F10 Central return flow thermistor F11 Main board connection fault F12 Connection fault between main pcb and display pcb F13 Main pcb connection fault F14 Central heating f...
WEEE Directive
Recycling with Glow-worm
The WEEE directive places an obligation on manufacturers, distributors and retailers to take-back electronics products at the end of their useful life. A sister Directive, ROHS (Restriction of Hazardous Substances), complements the WEEE Directive by banning the presence of specific hazardous substances in the products at the design phase. Instructions for Disposal of WEEE The symbol shown below is on the product or on its packaging w...Thank you for contacting Glow-worm
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Local South West boiler and heating engineers
Boiler repairs, maintenance and new boiler installations in South West
Whether you need assistance with regular boiler servicing, emergency repairs or installing a new Glow-Worm boiler, our local South West-based engineer team are happy to help! Glow-Worm Club Energy installers can provide boiler installation and other services for homes in Poole, Bournemouth, Weymouth, Cheltenham, Brixham, Lyneham, Bath, Bristol and other surrounding areas. Get in touch with us to receive Glow-Worm’s ...Glow-worm heritage products now proudly on show at Derby Museums Museum of Making
This week Glow-worm’s parent company, Vaillant Group launched the first phase in it’s 3 year partnership with Derby Museums, bringing new investment to develop future engineering skills in the region. As a leading manufacturer of heat pumps, boilers and complimenting heating system products, Vaillant Group is one of the largest manufacturers based in Derbyshire. This year the Belper based business celebrates 90 years of heritage with its Glow-worm brand and 150 years with Vaillant. Having inves...
Tuesday 18th February 2025
Online training via our dedicated e-learning platform
Our loyal installers can access training at any time, anywhere with the Glow-worm Academy
Fault Finding Codes
Fault finding codes for the Betacom c range
Fault finding codes for the Betacom c range Codes Description Temperature 30 flashing Fault on CH thermistor Temperature 40 flashing Fault on DHW thermistor Temperature 50 flashing Fault on outside sensor Temperature 60 flashing Low system pressure Temperature 70 flashing Fault on APS Temperature 80 flashing Overheat open circuit Temperature 90 flashing Flame or gas failure Faults which are not listed Rapid modulation of the burner Check that the flue seal and restrictor has been fitted (restri...
Vaillant Group UK customer communication (updated 26th March 2020)
UPDATE: 26/03/2020 Advice for installers and engineers about visiting customer homes. The situation with COVID-19 within our industry has been changing daily and we’d like to provide our customers an update on the latest position from Government – an extract below: 2. Work carried out in people’s homes Work carried out in people’s homes, for example by tradespeople carrying out repairs and maintenance, can continue, provided that the tradesperson is well and has no symptoms. Again, it will be i...
Conditions for Use
Glow-worm is a trading name of the Vaillant Group, which includes Vaillant GmbH and Vaillant Group UK Limited. Vaillant will adequately endeavor to ensure that this website will contain exact and valid information. We however do not assume liability for or guarantee the up-to datedness, correctness and completeness of the information made available or the suitability of this information for a specific purpose. All information is made available “as it is”. Vaillant does not assume the responsibi...
What is weather compensation and how does it work?
If you’re looking for ways to reduce your home’s energy expenditure, you may have come across weather compensation. Weather compensation is well worth considering if you’d like to reduce energy bills and minimise your carbon footprint. In this guide, we’re going to take a look at weather compensation systems, how they work, and what benefits they offer for homeowners.
What is weather compensation?
One of the biggest factors that influences the demand on your home’s central heating is...Coronavirus (COVID-19) news and updates
Coronavirus restrictions vary depending on where you live and work in the UK. For the latest advice and lockdown restrictions in your region, please visit: England: https://www.gov.uk/guidance/new-national-restrictions-from-5-november Northern Ireland: https://www.nidirect.gov.uk/articles/coronavirus-covid-19-regulations-guidance-what-restrictions-mean-you Scotland: https://www.gov.scot/publications/coronavirus-covid-19-protection-levels/ Wales: https://gov.wales/coronavirus-regulations-guidanc...
Gas Safe Registered Boiler and Heating Engineers in Chesterfield
Glow-worm supplies and installs energy-efficient and reliable boilers for properties in Chesterfield. Besides installing new boilers, our heating specialists can carry out boiler maintenance and various repairs to keep your boiler and the overall heating system working as efficiently as possible. Find your local boiler engineer from our directory of Glow-worm Club Energy approved installers today.
Boiler servicing, repairs and maintenance in Chesterfield
Our reliable network of Gas...Fault Finding Codes
Fault finding codes for the cxi range
Fault finding codes for the cxi range Codes Description F1 Ignition fault F2 Fan F3 Fan unable to reach ignition speed F4 Ignition fault F5 Overheat Fault F6 Central heating flow thermistor F7 Domestic hot water thermistor F8 Tank thermistor (N/A For this appliance) F9 Water pressure sensor fault (please contact GW technical department for further information F10 Central return flow thermistor F11 Main board connection fault F12 Connection fault between main pcb and display pcb F13 Main pcb con...
Bringing better business to your home
Glow-worm are proud to announce that they will be hosting an additional four Built to Last development courses in partnership with The Boiler Business for its customers after the success of the previously held courses. Starting with the first course on May 17th, customers will be able to secure their spot on the online course led by industry experts Tom and Rob, designed at giving installers the tools to run successful business specifically designed for the Plumbing and Heating industry. Instal...
Wired and Wireless Heating Controls
Glow-worm's range of controls are specifically designed to work with Glow-worm appliances, creating highly efficient heating systems and further home comfort.
Your Glow-worm service engineer visit
We want to ensure your engineer visit for your appliances goes as smoothly as possible. Here is what you need to know and how to prepare:
Manage Your Booking
If your appointment was booked by phone and you need to cancel or reschedule your appointment, please follow this link to myGLOW-WORM Web to cancel or change your booking. Thank you for helping us ensure a safe and efficient visit to your appliance.Book your Glow-worm engineer service easily online
Visit myGLOW-WORM WebVaillant Group UK Limited - Glow-worm New York Trip Promotion - 2nd - 5th December 2021
Terms and Conditions
1.1 Subject to clauses 1.2, 1.3, 1.4 and 1.5 below, Vaillant Group UK Limited under its brand name Glow-Worm (Glow-Worm) provides this Glow-Worm New York MicraCom trip promotion (Promotion), which is open to applicants, over the age of 21 years, who are resident in mainland United Kingdom. For the avoidance of doubt, mainland United Kingdom excludes, without limitation, the Channel Islands, Isle of Man and/or Northern Ireland (Territory) (Applicant, and the term Applicants shall be interpreted ...
What is a thermostat and how does one work?
Most UK homes with central heating will have a thermostat, usually on the landing or in a hallway. While it’s easy to set the temperature on your thermostat and forget all about it, getting to know more about this device, how it works, and the different options available can help you to save money on your energy bills and reduce your carbon footprint. A thermostat is a device that works to maintain a constant temperature in your home by measuring the ambient temperature and comparing it to the ...
Gas Safe Registered Boiler and Heating Engineers in Slough
Glow-worm supplies and installs energy-efficient and reliable boilers for Slough homes. In addition to replacing boilers, our heating engineers can carry out annual maintenance and various repairs to keep your heating system working as efficiently as possible. Find your local boiler engineer today.
Boiler servicing, repairs and maintenance in Slough
Our network of Gas Safe Registered heating specialists in the South East can service your boiler if your household is experiencing any h...Boosting your mental health with sleep
As part of this year’s Mental Health Awareness Week, we have teamed up with psychologist Lauretta Wilson; to uncover how being kinder to ourselves, particularly when it comes to sleep and exercise, and how this can play an important role in supporting our mental health. In this blog post, we explore the role sleep plays in mental wellbeing and uncover some of Lauretta’s top tips for getting a good night’s kip. Sleep is incredibly important for mental health. And with us spending more time indoo...
Glow-worm elevate online training with a new central hub
Glow-worm has elevated it’s online training offer with the introduction of the Glow-worm Academy, a new online portal allowing installers to follow a tailored learning journey to develop their technical skills with Glow-worm heating systems. The Glow-worm Academy offers installers access to over 85 years' worth of British heritage and expert knowledge in a friendly, easy-to-use 24/7 access portal. Glow-worm Academy truly allows installers to carry out training by fitting around their work sched...
Boiler Servicing Fault Finding Codes
Fault finding codes for the CI Plus range
Fault finding codes for the CI Plus range Codes Description F1 Ignition fault F2 Fan/APS F3 Air fault F4 Ignition fault F5 Overheat Fault F6 Central heating flow thermistor F7 Domestic hot water thermistor F8 Tank thermistor (N/A For this appliance) F9 Water pressure sensor fault (please contact GW technical department for further information F10 Central return flow thermistor F11 Main board connection fault F12 Connection fault between main pcb and display pcb F13 Main pcb connection fault F14...
Winter Weather Advice
Read our top tips to help you keep warm this winter
As winter approaches and temperatures drop, ensuring your heating system is ready to perform is essential for a cosy home. Our Winter Weather Advice blogs will guide you through essential steps like bleeding your radiators, adding insulation, and maintaining the ideal room temperature to keep your space warm when it gets chilly. Discover our expert tips here: Read more Read more Read more Read more empty loft room with wooden beam Read more Read more A mobile phone in hand with a white radiator...