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COMBI BOILER,TEMPERATURE SENSOR TEST,THERMISTOR TEST
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- Опубликовано: 20 янв 2013
- This video is how to test combination boiler temperature sensors.
Any video request please comment and I'll try my best.
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Kombi sensör arızasını anlaya bilmek için açıklayacı video. Ustaya teşekkür etmek lazım.
Great video, clear explanation. I have central heating working fine but no hot water. I have been informed that DHW Thermistor could be an issue as boiler does not know of problem. Thanks I will try your video explaination.
Jay
Great video mate, please do more on components testing it's always good viewing.
A thermister can go open circuit when resistance increases/decreases so dont take it for gospel they are ok... (Had a few thats done it)
Hi really really like your video well explained really appreciated to you for share your knowledge with us
Kindly please can you upload more videos like how to check boiler fan & air pressure switch & more like boiler fault finding & Diogenes
Thanks a lot
Good job and thanks for giving this information.
Yes, .more component testing vids please. Pumps, valves, boiler internals.
Many thanks.
EXCELLENT VIDEO , as i was looking for a new meter after getting some funny readings off my tpi ez100 ..
Excellent video well explained about thermistors
Please upload more video about boilers such as diverter valve/diaphragm etc.
Thanks
I believe when you tested the second thermistor the lead tips were touching and that's why you got the O.L reading....then when you moved you got a correct reading. You remind me of tradies I've hired here and cost me more $$$ then needed.
redrock1963 im just comparing these readings he got the first one was correct for room temperature, and the second one of 9000 is showing a temperature of around 27 Celsius.. I wouldn’t say that’s too problematic if anything the boiler might cycle on and off at lower deltaT room temps..
If the lead tips were touching you wouldn't get a O.L reading (basic electronics testing). You would get 0.1- 0.9 ohms like he showed earlier in the video.
I'll try to do a clip on air pressure switches in the next few days.
Just a quick question please , my heating hasn't been on all summer (turned to dhw only ) , however water has been hot as normal , pressure is fine , however water often goes cold , from these videos it sounds like the temp sensor , however pilot light goes out , would pilot light go out if bad hot water sensor and dhw on only ? Thanks
I may be missing something here but the 10k and second one at 9k are almost the same resistance so both registering around room temp. 80 degrees C would be about 4k - I am not a heating engineer so what am I missing here??
great vid , replaced 3 of these in one year .. how come they keeping going wrong? never had to change one in 10 years and now three in less than a year ??
KaneInternational do a great set of clips on Flue Gas Analyses on youtube. But when i get a chance to do a vid on site i'll do one.
Hello sir l have sensor boiler temperature, 3 wire cable color : Red,blue and white but l dont now type of sensor RTD or Thermocoule .
Please help me sir
Thank you…
Does it matter which wires go on which terminal mine are independent, not in a block thanks
Please make live and dead test of each component of boiler
Would this explain why the hot tap runs hot then cool ?
Very well explained tho
If I unscrew this from my boiler will water come out. Or is it sealed in a pocket
well explained thanks.
Ok so we don't have a fluug so what do we do guess what ohms it is to be set?
Is the for all thermistors or do different ones have different ohms ratings.
any chance of a tutorial on flue gas analysers please
Hi, when removing these sensors.. Do you need to drain the boiler or anything like that? Will water be behind the sensor?
MonkeyPumpkin some are dry pocket but I'd drain it to be sure.
TippTopp81 thank you very much for the reply!! :)
11.000 to 13.000 oms is when the boilers cold what should it read when boilers running???
These work by decreasing the resistance proportionally with an increase in temperature, for example 25 degress C to start at 12,000 Ohms, to 55 degrees C at 4,000 Ohms. As temperature goes up, resistance comes down.
Hi,my boiler keeps shutting down when i run a bath,could it be a faulty thermister?
Blocked plate heat exchanger 👍
Only if the thermistor is an NTC.
Yes. No mention of NTC vs PTC thermistors. Otherwise good info. Cheers!
Where do you put the probes on a single pin sensor?
taab7 one side on the pin the other side to earth
tipptopp, you sound like a Wiganer, are you? good vid BTW
I'll try to do a clip on air pressure switches in the next few days.
TippTopp81 Nice video. We're still waiting for the new video ;)