The dial can fo lower than 60 (55 I think is the min).From memory (at work currently), the tank is cylindrical, coated with foam and is (not 100% sure on this) pale green. What's New 3 12 24 72. With a combi boiler, hot water goes directly to the taps. If not, as the engineer and make a note of it, and the serial number, which may be useful in future. The immersion heater is off (never used)Our boiler is a Potterton Promax HE and the only controls on the outside is one solitary reset button. Many of the problems you encounter with gas boilers, you will not encounter with an electric one. Hot water in the tank should have a cap for how high the water temperature can be set. The dial on the tank is at 60 degrees, but the water coming out of the tap is much hotter. You should hear it click on and off. Hot water but no heating. Green is newer, light blue is latest. Boiler pressure is the balance of water and air in your central heating system; too much of one or the other and it will affect your boiler pressure. To use this feature subscribe to Mumsnet Premium - get first access to new features see fewer ads, and support Mumsnet. Overheating also is the main cause of leaking. Now, combi boilers are considered high-efficiency water heater and central heating units, which means that they can both heat your home and provide hot water, without the need for a separate water tank. if so, you can probably get a user manual from the manufscturer. One thing to do is to check the temperature before making any adjustments. Some like it hot to clean dishes; others prefer it a bit cooler to lower the risk of scalding. It didn't cost that much to fix but was a job for a professional. P.s.Just to check, your boiler is a Promax, not a Promax Plus? If a boiler has reached 220°F, a sudden drop in pressure could cause the tank to burst. Locate the bleed point on the first radiator usually at the top of the device on one side and have a dry cloth and container handy to catch the water. If your central heating is functioning perfectly but there is no hot water coming from your shower or taps, it is likely an issue with the diverter valve. PigletJohn - The manual you refer too doesn't appear to be out boiler, we have a reset switch on the front panel. If your water heater is making hot water too hot, it is likely the result of the temperature setting being too high, a malfunctioning thermostat, high mineral content, or the pressure relief valve is blocked. A boiler is a bit more complex than a forced air furnace in that it has more parts, valves, and controls. Solution: Reduce the temperature to between 40-50 degrees Celcius. This will cause breaks to begin occurring at … ah, that one is the "plus" which is apparently less troublesome. Dec 13, 2011 #1 Apologies if this has been asked before, I did try a search. To comment on this thread you need to create a Mumsnet account. Radiators are cold.The boiler says 'Potterton Promax HE' on the case and I think it's about 7 years old. You have answered your own question , the reason for the water being too hot is the slow flow rate , check cold water flow for valves cut down a bit , thermostatic valve set too low , last but not least your mains pressure maybe restricted , cold tap flow if the cold mains tap has good flow , feed to boiler heat exchanger unit is being restricted in some way As mentioned before, try turning the temperature down and see if that makes any difference. As well as being better insulated, the later ones heat up faster because they have bigger coils.For your radiators, there should be a wall thermostat that turns off the flow to the radiators when the rooms are warm, and the boiler should stop firing if both the cylinder stat and the room stat are satisfied, via the switch in the 3-port pump. This valve allows a combi boiler to switch between heating your radiators and your hot water, so when you turn on your hot tap, the diverter valve opens and sends hot water … If you had set your boiler timer for particular times in the day but you no longer have hot water at times you expected, it may be that your boiler timer has changed. If you’ve found that you’re getting hot water from the taps but no central heating, there’s a problem. It might have its own circuit breaker of fuse in the "fusebox" that you can turn off.Then turn the cylinder stat up and down. Similarly, your radiators are not the same as the hot taps. Discuss Hot water too hot with gas boiler, cylinder thermostat seems to stay cool. Hot water is too hot: Cylinder thermostat is set too high: Turn it down – 60°C is the recommended temperature: Loose Cylinder Thermostat: Reposition and tighten up strap: Cylinder thermostat incorrectly or poorly sited: Ensure there is a good thermal contact between thermostat and cylinder – remove dirt or insulation: Cylinder thermostat switch broken If it’s digital, consult the instructions. Turn on the hot tap and leave it running for 20 seconds, then fill a pint glass or a measuring jug. A new valve motor that out. If the water from your boiler is too hot read our article to find out what you can do to resolve it. If your boiler it noticeably quite old or in poor condition then this could easily cause problems with … It’s also possible that your water is running too hot because of a mechanical or electric failure in your boiler or system. Here though, both got eatery and heating work fine, it's just that they are too hot. One thing to do is to check the temperature before making any adjustments. L&W is proud to announce that we have passed which? During the Coronavirus COVID 19 pandemic, we’re following all of the recommended guidelines from the NHS, British Government and Public Health England whilst ensuring safe working practices at all times. The hot water temperature control could be part of a digital readout or a knob on the front of the boiler unit. S also possible that your water is regulated by this adjustable thermostat which normally has a range between and. Was a job for a professional ok … Understanding the components of a hot water goes directly to the.! ( this thread you need to create a hot water too hot from boiler account thermostat was changed as it was faulty and. To the taps 220°F, a sudden drop in pressure could cause it to,! 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