Worcester greenstar 28i junior flashing green light ipbr21054 , 18 Oct 2009 , in forum: Plumbing and Central Heating Replies: The green light is solid and static. Worcester greenstar 28i junior flashing green light. Worcester Bosch Greenstar Junior 28i – blue light flashing, no heating or hot water. No pilot light on boiler. The boiler will run at a low burn for about 15 minutes to fill the condense trap. The flashing is going fast and not slow. When the boiler can’t ‘see‘ the thermostat, you get a flashing Central Heating Light the Worcester Bosch boiler. Worcester greenstar 28i junior flashing green light. It's a worcester greenstar 28i Jr. Without a pilot light, the boiler won’t be able to provide central heating or domestic hot water. Worcester Bosch Greenstar Junior 28i repair. So below, I’m going to go over some of the most common Worcester boiler faults, and fixes. Worcester Bosch Greenstar Junior 28i Flashing Green Light - Can't Control Heat 14 April 2015 at 7:29PM edited 30 November -1 at 12:00AM in Energy 3 replies 4.3K views A blue light flashing on a Worcester RI boiler indicates there’s a problem with gas supply, flue blockages or the condensate unit. Added to this, the Central Heating Mode defaults to OFF at the same time, which you can’t change by pressing any button. This is perfectly normal - it is a safety feature of the boiler. Older boilers are more prone to faults, and over the years I’ve received quite a few calls about old, faulty Worcester boilers. Posted on 08 Apr 2018. However, if the boiler is working properly then, it is not necessary to change the LED. I have a Worcester Greenstar boiler ri which has a fast blue flashing light after around 15-20 seconds of it being switched on. Generally, there are two explanations behind it. 2. You can hear fan starting but boiler does not ignite. I did find the manual on it, tried turning it off at the switch and holding the reset but neither worked The pilot light is a small blue flame that lights a larger flame when there a call for central heating and how water – if it’s burning orange or yellow there could be a carbon monoxide leak. It’s no fun having a faulty boiler, especially if you don’t know how extensive the work is or how much it’ll cost to fix. Firstly, LED Failure is an obvious explanation & I would suggest replacing it immediately. A customer called me worried because the blue light was flashing on his Worcester Greenstar 24Ri and he was worried that it had developed a fault. Their manual does not mention anywhere what this means. The water and gas are both on at the transmitter unit. This happens after the boiler has been turned off, if it hasn't been used for a day or so, and if the control knob has been turned down and back up. 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