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boiler

  1. D

    Vaillant boiler change in operation

    My Vaillant boiler now only fires up for around 30 secs then goes off. The egg timer symbol then appears and flashes for several minutes. After that it fires up again and heats the rads. Would be grateful if anyone could suggest why this is happening. Thanks.
  2. chloeradhsaw

    Two pumps on a heat only boiler quotation

    I just had a quote for a new boiler install as follows I dont undertand why a 15-60 boiler pump is needed and a 25-100 pump is needed as well I currently have an ideal mexico 2 heat only boiler - It has one DAB pump on the boiler return and a 2 port valve at the flow pipe to allow for heating...
  3. I

    Tado thermostat not triggering boiler

    I've had my tado system in my new build for 5 years now and it's been fine. Yesterday morning I changed the batteries on the second floor thermostat and now it's not switching on the boiler to heat that floor. The thermostat display is fine and the app is fine. All systems say they are fine and...
  4. B

    Boiler condensate pipe leaking at joint

    Hello I have a condensate pipe that appears to be leaking at the joint. How do I fix the leak? Would something like plumbers putty around the joint work or does it need to be some other compound? Can I simply pull the pipe and joint out and then put the compound round it Thanks
  5. C

    Boiler filling loop advice

    On my Valliant eco tec boiler the pressure guage is on red when cold . I drain a radiator to correct to pressure and it works fine and stays in the safe zone . When I switch boiler off the next day it’s back in the red It could be one of the valves leaking . Can I take the loop off , which...
  6. mehmet

    Combi underfloor heating and external boiler connection?

    Hello, I have a gas boiler in my apartment that heats a net area of 300 m2 with an underfloor heating system. The boiler has a capacity of 45 kW. There's no issue with the heating system, but I want to increase the hot water capacity. I plan to connect an external 200-liter boiler. How can I...
    • mehmet
    • Thread
    • boiler combi connection heating underfloor underfloor heating
    • Replies: 3
    • Forum: Boiler Advice Forum
  7. B

    Vaillant boiler taking ages to get to target temperature

    Hi all Wondering if you could help with this strange issue. I have a Vaillant ecotec 637 (set to 20kw part load) which was connected via a LLH to my system of 3 zones; DHW and 2 radiator zones. The gas usage was high and didn’t feel the boiler was modulating, so yesterday I decided to remove...
  8. screwloose

    Repressurising a Baxi Duo-Tec boiler

    Baxi DUO-TEC boiler Trying to repressurise using the 2 blue valves - left valve won't budge. Any ideas please?
  9. M

    Boiler pressure is rising? Did indirect hot water tank coil fail?

    First post as I can not figure this one out. I have a hot water boiler heating system, gas fired, with an HTP SuperStor indirect hot water tank. I'm on well water and have a water softener and two whole house filters for my water. Three days ago I found my high pressure relief valve tripped...
  10. D

    Oil boiler keeps tripping when it rains?

    We've had a Grant Thornton oil boiler for about 5 years and suddenly it trips the electricity when it rains? The unit is in a wood shed and the exhaust goes out the wall horizontally. I can't see any water ingress in the machine, so at a real loss......and very cold..!!!!
  11. R

    What are the normal cycling temperatures of a boiler

    I have a Glowworm Ultimate 35C boiler. It shuts off at its max temp of 60C when heating radiators and the pump carries on running pumping heat round system but it seems to let temperature drop at least 30 degrees before burner comes back in by which time radiator temperature has dropped...
  12. D

    Camray 3 boiler lock out

    Hi My oil boiler keeps locking out after running for 30/40 minutes! I then try to reset it but it won’t fire back up! I have to leave it for several hours before it will fire back up! Only to lock out again after 30/40 minutes! The boiler has had a new nozzle, coil and pump in the last 2...
  13. Hashtag246

    help me setting my Danfoss boiler controller!

    Hey folks, I'm in a bit of a pickle trying to set up my hot water and central heating systems. Got a gas boiler with a pressure tank and a motor circulating the hot water. There are two wall-mounted time adjustment thingies—one for hot water and heating, and the other for the motor. Oh, and...
  14. A

    Why is my newish boiler useless at providing warm water?

    About 5 year ago, I had a new central heating system (radiators) installed to replace my old warm air underfloor system. The warm air side of the new system is okay but we cannot get any hot water without running a bucketfull of cold water first. This means having to wash your hands in cold...
  15. D

    LEAK UNDER FLOOR. BOILER ON ALL THE TIME AND WHAT IS PART IN PHOTOS?

    Some advice needed please re a 3 year old combi gas boiler. The hot water works but no heating. A gas engineer was already booked to do the annual safety check before the fault developed. He said the boiler is ok with no fault. He said there must be a leak under the floor boards causing hot...
  16. S

    Boiler return temperature

    WB 4000 installed a few months back, just balanced the 7 rads - managed to get around 15 degrees delta across most rads. Not quite the 20 degrees but still. Flow set to 60 degrees for now. 1.Obviously I want to ensure the return temperature into the boiler is below the 55 ish degrees needed for...
  17. A

    GAH Electrastream boiler, low pressure level, how to top up system?

    Can anyone help me identify which tap/connection it is to top up the system as the level has dropped quite a way below the red marker for the cold fill pressure on the gauge? Boiler was installed approx. 2014. I've looked in the manual & online but can't find anything. Many thanks
  18. nick_p

    Vaillant Ecotec system boiler with VR66 and Opentherm (VR33 and Nest)

    Hi everyone, Just wanted to share my experience with "upgrading" an S plan setup to Opentherm and Vaillant Control Center (VR66). There are a few threads on a few different forums but I wanted to share a full write-up with all the steps needed, benefits and costs. Overall, I fully recommend...
  19. R

    Need to replace expansion vessel (oil fired boiler)

    Looking for someone that can replace the expansion vessel on an old heating system that is losing pressure every day and needs topping up at least three times a day. Trying to eliminate what the cause could be. Appreciate that it could be a leak somewhere, but looking to tackle one issue at a...
  20. davidw

    How thermal store boiler works?

    How a thermal store boiler works! I’ve got an old thermal store boiler and I’m trying to work out how it works. From what I understand the boiler keeps hot water at a steady temperature in the boiler whilst cold water enters into a coil which is held inside the hot water and this heats the cold...

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