Different water temperatures

[NicC]

I have a Worcester Combi boiler that was fitted less than two years ago. Just recently, the hot water temperature is lower from the upstairs taps than the downstairs although I haven't noticed a drop in pressure at all.

In terms of recent changes that may or may not affect things: We are having the downstairs shower room refitted at the moment and the radiator has been removed. We also had a major leak to the kitchen hot tap(now repaired) and the room filled with steam (the thermostat is in the kitchen).

Any ideas as to why the water temperature difference is occuring?

 

[Gasguru]

Time how long it takes to fill a saucepan so you can set each tap to the same flowrate. Then see if the temperature is really any different.

A combi can only heat the water by a specific amount dependent on the flowrate.

Model would be useful to know.

 

[NicC]

Thanks for the reply Gasguru. I have timed the fill rate and it is almost identical for downstairs and up.

The model of the combi is GreenstarHE Plus.

It is worth mentioning that this problem has only recently developed (last few days). Also, I have left the upstairs tap running for a good 10mins to see if it heats up and it is still warm at best. THe kitchen tap delivers water that is almost too hot to touch.

 

[Rob]

What does the boiler display say the flow temperatures are for both taps?

 

[Rob]

*doublepost*

 

[NicC]

The flow temps seem to be around the same, the downstairs around 62.5 and the upstairs 64.5, this now makes even less sense to me!!!

Any thoughts?

 

[Gasguru]

Are these temperatures measured on the boiler display?

Unless your hot pipework runs around the house a few times there should not be any significant diiference felt at the taps.

Why did the room fill with steam when you had a problem with the kitchen tap?

 

[NicC]

Yes, they were the temperatures displayed on the boiler

THere hadn't been any real difference up until the last few days.

The kitchen filled with steam when the hot water pipe split just below the kitchen tap and was pouring hot water out. It may have been going for a couple of hours but I can't tell as it happended some time in the night. When I woke up and went to the kitchen, the floor was flooded and the room was full of steam.

 

[Agile]

"""The flow temps seem to be around the same, the downstairs around 62.5 and the upstairs 64.5, this now makes even less sense to me!!! """

I expect this is NOT the temperature of the hot water! Most boilers display the system water temperature when on hot water mode and this is usually about 10 C above the actual hot water temperature. Anyway combi boilers should not give more than 55 C on DHW.

If it really bothers you so much then get a digital thermometer.

Is it a joystick tap? Is the tap mixing cold water inside? Can you turn off the cold feed at isolating valves under the tap.

OR

Turn on DS tap and the turn off cold feed into boiler and see if flow at DS hot tap turns off as it should!

Has any plumbing ben changed? Last one I went to had a washing machine fitted wrongly and linking hot and cold water!

Tony