worcester bosch

Looking for help - I've got a Worcester Bosch Greenstar boiler, 3 months old, that I can't repressurise. Any help much appreciated, evening temp is dropping fast and we're getting chilly... Thanks! I just bled a radiator for about 10 seconds, and after that the boiler's pressure had dropped...

Hi, We had a Worcester Bosch 4000 boiler fitted a few months ago - all pipes go into the boiler through a mounting plate. We recently got a visit from an electrician for some work and he says the boiler needs to be bonded ('equipotential bonding') using 5x bonding clamps; the previous 20+ year...

Hello, I have just moved in to a new flat this week and have a problem with noise coming from somewhere around the top of the boiler. It's a loud clicking/knocking sound that lasts about a minute, stops for 20-30 seconds and starts again. It seems to happen at night, starting in the evening...

I got a brand new Worcester Bosch Greenstar 27Ri gas boiler installed in May and haven’t had any issues with it actually working, except since we started using it regularly we’ve noticed it seems to make a loud noise when igniting (I wouldn’t say like a bang but more like just a loud vibration)...

The C1 code is showing (error with fan) after I first first hear brief whirring-ticking, like the fan motor is trying to get going, so possibly more likely the motor as the display is normal until I attempt to run the boiler? I realise this is possibly down to a faulty PCB, which could have...

Hi All, I've got a Worcester Bosch Greenstar 30Si combi boiler and I'm trying to replace the room thermostat which has a faulty display. The faulty thermostat is a DT10RF optimiser which is discontinued so I purchased a Comfort 2 RF which is supposed to be the equivalent replacement. It...

Morning All, Could I ask your advice about problems with a Worcester Bosch 280 RSF, GC 47 311 11? Initial symptoms were that the domestic hot water was taking a long time to get hot, the top half of the radiator nearest the boiler stayed cold, and the boiler had partly lost pressure a couple...

Hi folks, Apologies in advance if I use the incorrect terminology in describing the problem. First, some History. The current system is a WB Greenstar 8300iW 30 S (or maybe 35 S) condensing boiler. No cold-water header tank in loft, not a combi-boiler (we have a hot water tank in the airing...

Hi all, My WB 30i combi obviously provides DHW on demand at all times when a tap is opened. It has a preheat function to provide a small amount of pre-heated water to reduce DHW heating times - manual control is via the ECO/PREHEAT button. It also has a (usually linked) input to presumably...

Hi, Looking for advice to confirm how to wire up a new Drayton Wiser 1 channel smart thermostat to a Worcester Bosch CDI30. This will replaces an existing Drayton LP20RF dual channel digistat and wireless thermostat (easily removed). As there’s no existing wall plate I need to wire this in...

Hi, Brand new worcester bosch installed two days ago with hive controller. Turns on as per schedule in the morning but then does not turn off at all unless done manually using the boiler controls. Installer says hive is working fine as is the boiler and the fix requires a new 'suppressor'...

After switching my consumer unit off temporarily to check a switch, my boiler (oil WB Greenstar Heatslave ii combi, only a few months old) won't come back on. The LCD is blank and the wireless thermostat had a Fault A21 which just means it can't find its friend. Any ideas? I've checked the FCU...

Hi all, I am in need of a little help... Boiler: Worcester Bosch RD532i Current Thermostat: TR2 Room Thermostat New Thermostat: BHT-6000 I want to fit the new thermostat to the boiler, but the wiring is very confusing and even though I have extensive knowledge of renovation, some wiring and...

Hi, I have a Worcester Bosch Greenstar 18Ri regular boiler installed within my garage. There is also a Honeywell T4360 Frost Thermostat installed just above and to the left of the boiler. The problem I was having was that the Frost Thermostat was kicking in in cold weather and firing up the...

Hello I could do with some advice on changing my analogue stat for a Salus RT500rf. I have a Worcester boiler and my hope was to simply swap over and run a sep mains to the same source as the boiler and then use the existing wiring for the stat to Salus. My boiler has an analogue programmer...

Hi All, I'm having trouble wiring up my Hive receiver to my Worcester Bosch 37CDi Combi. I'm replacing a Honeywell BDR91 wireless receiver which only had 4x wires going to it L, N, A & B. I thought it would be simple enough to wire up the Hive receiver but I'm getting nowhere! I've...

I have the above boiler and am getting a flow rate (measured from 2 different taps) of just over 7 litres / minute. The quoted flow rate (with a 35 degree rise) is 14.6 litres / minute. I realise with outside temperatures (and therefore water input temp) low that I wont get 14.6 l/m but should...

I’m looking to self install a Nest Learning Thermostat on my Worcester Bosch 280 boiler. The wiring looks straight forward, but I just wanted to sense check before I go ahead. The boiler doesn’t have a stat currently, so on the stat section has an unused N connection. 1 & 2 are jumpered (2 shows...

Hi all I am replacing a main heat exchanger in a green star 42cdi boiler, all straight forward apart from removal of the bottom pipe from the heat exchanger, has anyone got any tip in how to remove it Many thanks Dave

Hello It's been a little while since I last posted - that's because I've had not problems since last time! Anyway, last night I noticed that the heating was still on when it should have stopped some time ago. I went to the boiler to find that the 2-digit display was flashing "FC". The display...