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Posted By Topic: Low voltage to gas fire

Jun 21 2018 20:14

Hi all,
2 weeks ago (Thursday the 7th of June) our 5 year old Rinnai electric ignition gas fire cut out just after starting it.
Tonight it has done the same thing.

I got / get 102 volts at the inside fuse which runs to the fire, and 64 volts at the fire wall switch.
Tonight I got 82 volts at the fuse the first time I tested and 20 minutes later 102.
Last time I changed the wirable fuse wire
even though it wasn\'t blown and things came right.
After that I bought a replacement breaker switch fuse, and have had no problems in 2 weeks.
The breaker switch fuse had not tripped tonight.
I have 238 volts on the main fuse and everything else in the house is running fine.

Any ideas ?


Jun 21 2018 20:22

Are you an electrician?

Jun 21 2018 20:48


As per 2 weeks ago it has just come right.

The old hot water circuit was used for the gas fire as we are on gas hot water and it wasn\'t being used.
I (maybe foolishly) saw the relay switch in the off position 2 weeks ago and just thought the relay would have been disabled in that position.
I never checked it afterward.
I have just been out to the main meter box and it is back in the on position.
So after nearly 5 years without a problem, and it never been activated, I find that the hot water relay is still enabled and it has been activated twice 2 weeks apart !
Bizarre, I will obviously be making some phone calls tomorrow.


Jun 22 2018 08:38

Start with one to the idiot who used that controlled circuit.

Jun 22 2018 19:36

\"Start with one to the idiot who used that controlled circuit.\"

Yeah I did that, and got the fully qualified muppet to come up and sort it.

Amazing that it has taken the network control room five and a half years to flick our relay off.
Must be global warming and everyone using their air conditioning units to cool down, that has caused some heavy loading :-D

Jun 22 2018 19:56

\"fully-qualified muppet\"

yeah there\'s a surprising number of those about.

Jun 25 2018 11:59

There are 2 main reasons I\'m aware of for switching a controlled circuit. The first is when the retailer has done a poor job with their hedge contracts and are trying to avoid exposure to a high national spot price. The second is when the distributor has a network capacity issue and are trying to defer the need for an upgrade. If you live in an area where the network planned for a certain capacity and you\'ve only recently started to approach that capacity then it would be quite normal to expect some years with no need to control the controlled loads, followed by an increasing need to control them as network capacity gets more and more constrained, followed by a capacity upgrade resulting in a reduced need to control again.