Replacing a dimplex xt24 with …..

Rosie1001

Replacement part used 

Rosie1001

He did say the damper being closed all the time could cause overheating , I have no idea if this is true or now though 

it’s open now 

EssexHebridean

Rosie1001 said:

He did say the damper being closed all the time could cause overheating , I have no idea if this is true or now though 

it’s open now 

Nope - the whole idea of the damper is that it stops the heater from emptying the heat out as fast as it charges up. Opening it will just achieve high bills and no heat left when you need it! 

The main heater in our old flat had its damper pretty much fully closed all day every day through most of its life - on very cold days I used to sometimes throw it right open mid evening to empty out the remining heat in one go for a quick boost of warmth, but that was about it. It always got closed again before we went to bed in any event. 

Rosie1001

I’m at a loss then … 

is the 51 flashes a min ok for a 3.4 kg …

will get the insulation panel checked .. but if not  that or the elements that’s wrong  , I’m stumped 

electrician just want me to replace , I can’t do it yet  

Gerry1

51 flashes per minute...  3060 flashes (impulses) per hour...  As 1000 imp = 1kWh, that's 3.06kWh per hour which means that 3.06kW is being drawn.  (That assumes the heater ratings were originally based on a 240V supply).

If your actual voltage is indeed 240V then you'd expect it to charge at 3.4kW.  (That's 23.8kWh if it charges for the full 7 hours.)

There are two possible explanations.

• Your 3.06kW figure is slightly low but it suggests that all four elements are OK.  Your actual voltage could well be a bit low because it's cold and gloomy hence demand has risen.  If it's fallen to 227.68V (well within the permitted limits of 230V+10% / -6% that would explain how you measured only 3.06kW.  That seems the most likely scenario.
  
• You hadn't turned absolutely everything off.  After counting the flashes, switch off the NSH and watch the red light.  It shouldn't flash once.  If there are still 8 or 9 flashes per minute (corresponding to a rather high background load of 510W) you'd have to subtract that, so you'd do the sums based on 42 flashes per minute.  But that seems a bit unlikely.

Swipe

Just to chime in, my 3.4KW rated Creda TSR storage heater pulls 3.05 KW on my IHD and I'm pretty sure all 4 elements are fully working. Also in my student days (many many moons ago), I wedged a storage heater damper down with a knife thinking it would keep the heat in better over night which did cause the RCD to trip until it was removed.

Rosie1001

Gerry1 said:

51 flashes per minute...  3060 flashes (impulses) per hour...  As 1000 imp = 1kWh, that's 3.06kWh per hour which means that 3.06kW is being drawn.  (That assumes the heater ratings were originally based on a 240V supply).

If your actual voltage is indeed 240V then you'd expect it to charge at 3.4kW.  (That's 23.8kWh if it charges for the full 7 hours.)

There are two possible explanations.

• Your 3.06kW figure is slightly low but it suggests that all four elements are OK.  Your actual voltage could well be a bit low because it's cold and gloomy hence demand has risen.  If it's fallen to 227.68V (well within the permitted limits of 230V+10% / -6% that would explain how you measured only 3.06kW.  That seems the most likely scenario.
  
• You hadn't turned absolutely everything off.  After counting the flashes, switch off the NSH and watch the red light.  It shouldn't flash once.  If there are still 8 or 9 flashes per minute (corresponding to a rather high background load of 510W) you'd have to subtract that, so you'd do the sums based on 42 flashes per minute.  But that seems a bit unlikely.

Thank you …everything was off .. I checked and no flashes .. put heater on and light flashed 

Rosie1001

That’s leaves heat leakage from the insulation panel causing stat to trip …

only other thing it can be … 

I will get the panel checked later in the week when the guy comes … apparently they do perish over time 

sorry for all the questions , but my hubby is away and I don’t want to be taken advantage of , knowledge is power 😀

Rosie1001

Heater working last night , but I’m sure I heard I click off again around 4 am 

will do the sanity test today to see if it has tripped again 

Scrounger

@Rosie1001 what do you have the input control set to?