There can be a number of reasons why your Vaillant boiler keeps turning off. It could be due to low water pressure, a faulty thermostat, a faulty water pump, air in the system or frozen condensate pipes. One of our engineers will be able to find the issue and quickly apply a solution for you.
Why does my boiler keep going off?
Lack of water flow
If the boiler keeps shutting off, it could be due to closed valves, air caught in the system or a broken pump. The boiler is switching itself off due to in-built safety mechanisms – if it did not shut down, then the boiler could overheat.
Is it normal for boiler to turn on and off?
If your boiler is too powerful for the demand your home puts on it, then you’ll likely notice it firing up and turning off frequently. The reason an equality between power and demand can cause boiler short cycling is because the boiler will produce more steam than it can condense.
Why does my boiler fire up then cut out?
Your combi boiler firing up then cutting out is nothing to worry about. It is usually the result of its ‘preheat’ function. Basically, it’s a way of ensuring that hot water is ready to be used in the taps throughout your home.
What temperature should a Vaillant boiler be set at?
For a modern combi boiler, the radiator heating temperature should be set at or around 75 degrees celsius for the best efficiency and performance.
How often should my boiler cycle on and off?
On average, furnaces should kick on and turn off anywhere from three to eight times per hour. However, if your furnace turns on and off more frequently, don’t assume the furnace is short cycling just yet.
What is comfort mode on Vaillant boiler?
In a regular, or comfort mode, the pre-heat function will be on and hot water will be ready to come out of the tap on demand.
What temperature should my radiators be set at on my boiler?
75 degrees
Your boiler controls explained
To maximise efficiency, we recommend setting your radiator dial to 75 degrees and your hot water to 60 degrees. Once you’ve got your boiler running at the optimal temperature, you’ll want to set the timer for when you need heating the most.
Is 50 degrees hot enough for hot water?
The ideal temperature for domestic hot water is 120 degrees Fahrenheit, or 49 degrees Celsius, to avoid the possibility of scalding.
Is it cheaper to keep your heating on low all day?
According to experts at the Energy Saving Trust, the idea it’s cheaper to leave the heating on low all day is a myth. They’re clear that having the heating on only when you need it is, in the long run, the best way to save energy, and therefore money.
What is the healthiest temperature to keep your house?
between 68 to 78 degrees Fahrenheit
Depending on the season, the ideal house temperature for both comfort and efficiency is between 68 to 78 degrees Fahrenheit. In the summer, the recommended thermostat setting is 78 degrees F. In the winter, 68 degrees is recommended for energy savings.
What number should you have your radiators on?
So what temperature is the right one? As a rule of thumb most guidelines recommend heating your home to 70F (21C) and bedroom temperatures should be kept a little cooler to around 64F (18C).
How many hours a day should heating be on UK?
Policemen coming round to gauge the temperature in your spare room is a strange thought. On average, UK homes are heated for about eight hours a day in winter – ten hours a day for homes that have one sustained heating period and seven hours a day for the more usual two heating periods.
What temperature should a house be in winter UK?
between 18 to 21 degrees Celsius
The Energy Saving Trust recommends heating your home to between 18 to 21 degrees Celsius during winter. And The World Health Organisation (WHO) suggests 18 degrees is the ideal temperature for healthy and well-dressed people.
What temperature should my boiler be set at in winter?
As a rule, setting your heating control to 75 degrees should be sufficient to give you a perfectly warm house, while also allowing your boiler to run as economically as possible. Once this is set, you shouldn’t need to adjust it.
What is a comfortable temperature for a house UK?
How Warm Should Your House Be According to the UK Government. The UK government used to recommend a temperature of 21 degrees for living rooms and 18 degrees for bedrooms, but now they just recommend 18 degrees for the whole home.
Is 14 degrees too cold for a house?
14-15° – If your home is this cold, you may be diminishing your resistance to respiratory diseases. 18° is the recommended night time bedroom temperature. 19-21° is the recommended daytime temperature range for occupied rooms. 24-27º is too warm and can put babies and young children at risk.
What temperature should my boiler be set at for central heating UK?
If you’re looking for a good balance of warmth and efficiency, you want to set your boiler to at least 65°C. Setting it a few degrees higher won’t hurt. But it’s important not to set it any lower than that. This is so bacteria in the water doesn’t grow, and cause nasty things like Legionella.
