Boiler won't run from a generator in a powercut.

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It's a cheapo Aldi 1000W 2 stroke boiler, but runs well. My boiler won't run with it as the power supply. Any advice. I have wondered if a better genny would work, and would hire one to try it if you guys advise so. Thanks.

CG
 
It's a cheapo Aldi 1000W 2 stroke boiler,
Did you mean "Aldi 1000W 2 stroke generator"?

Probably the AC sinewave is rubish and the boiler electronics do not like it.

EDIT: Also, what type of boiler do you have? Don't forget that if its a fully pump system, you'll also have to power the valves, and pump etc…

My guess is that the older type of boilers won't worry so much about a cr@p sinewave with lots of harmonics on it, A fancy condensing/combi boiler will turn round and hide in the corner unless its given a smooth waveform.

I also believe that the output on some gennys are bad unless they have a decent load on them.
 
I have known items kick up a fuss on an electrically separate supply such as a small generator.
It could be that an earth spike and the supply neutral tied down to it, however you'll need to speak to an electrician and the generator manufacturer before doing anything.
 
How have you connected the boiler to the genny? Could be a volts drop issue if it's a long run on a small extension lead.
 
We had this problem before on modern(ish) boilers, in areas where mains power was unreliable, there was two factors to this, one was the boiler wasnt getting 50hz from the genny, and the other was the earthing arrangement, wasn't allowing flame rectification (modern boilers flame proving via an ac-dc signal using the earth path back through the flame its self

I dont know if they make such a thing, but some"thing" that you can plug genny into to give 50hz, and proper electric supply that you would get over the mains.

boilers are very sensitive electronically, slight faults in supply could go unnoticed on 99% of houshold electronics but the boiler generally wont tolerate any fault
 
I dont know if they make such a thing, but some"thing" that you can plug genny into to give 50hz, and proper electric supply that you would get over the mains.
A high quality double conversion UPS may do it.
 
Similarly, you will find that these cheapo little £65 generators will not run a fridge compressor rated at (say) 300 watts. The reason is that the generator will not cater for the large momentary starting current surge that many products require.

You basically need to buy a better and bigger generator. These little cheapo generators will really only run resistive loads at there rated output.

Julian
 

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