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 Topic: Carver 1800SC Gas Fire
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23/8/2012 at 9:29pm
Location: None Entered
Outfit: http: www.arcsystems.biz
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On Holiday!!I should be so lucky and that will have to wait till all the caravans are hibernating in January!
So I understand some of this, the piezo is missing and a tube in it's place locks the piezo holder up so it cannot be pressed, the 12v connection should get it sparking, BUT, be absolutely sure you connect it right way round, the connection nearest the end of the plastic box is positive.
Now I'm getting hazy! the gas valve is held by a gland nut into a steel bracket about 4inchs long, there is then an alloy extension rod inside a tube that the control rod connects too.
The connection at the bottom to the gas valve is a plastic adaptor that forms a crude universal joint, given the control rod is 'spinning', this I expect has come out of the gas valves spindle, or the plastic has snapped?
This whole assembly has to 5mm bolts at the top and they pass through the fires base plate, the bracket holding the ignition module is then held by these bolts plus a white earth wire and two brass nuts hold it all tight.
The only screws involved are two holding the burner box on and a third holding a plastic air diffuser to the bottom of the fire box.
Trouble is this diffuser stops you getting a screwdriver square onto the other two screws and the one holding it on is also rusted solid.
Trick here is to get a strong flat blade screwdriver under the plastic and under the bracket in the centre, now lever the bracket up until the whole diffuser is clear and able to turn, then unscrew the diffuser and the screw will come with it.
You can now get square onto the other screws, it's a simple job then to tap the bracket back down and straighten up the edge of the burner box.
Glad to see your using plus-gas and not that useless WD40!, use this on the screws but also the gland nut holding the thermocouple to the gas valve, as that will also most likely be solid.
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23/8/2012 at 10:19pm
Location: London
Outfit: Compass Lynx 340 2
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Christ Gary! This sounds like pretty comprehensive stuff &, by the sound of it, you are talking this through from memory. I, on the other hand, am just an ordinary mortal & will have to get the thing out of the back of the car tomorrow & run through your post with the fire on my lap.
That bit about the "spinning" though. The plastic "universal joint" connector piece at the end of the rod is OK &, as I've been examining the entire burner/heat exchanger unit completely free of casing & back-plate, there is no confusion as to whether the long rod with the control knob on the end is connecting properly with the gas valve spindle. The mystery is........ the valve stem, when rotated without depressing it, does come to a stop, but........ depress it & it rotates freely 360+ degrees without encountering a stop. This can't be normal gas valve rotation...... can it?
Anyway......... will investigate tomorrow with your instructions in hand & see what mysteries unfold.
Don't want to delve too deeply though cos, if it needs to go back, the supplier will not credit me on receipt of a box full of mangled bits.
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25/9/2012 at 3:55pm
Location: London
Outfit: Compass Lynx 340 2
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The Damned Saga Continues.
Well I called the guy that sold me the fire who swore blind that he fully tested it before he removed it from the caravan it was in & everything, including flame failure, was working. He didn't quibble though & said he had another caravan awaiting dismantling with the same fire in it & he'd test it out & send it to me. Told me to keep the other one for spares. What a Star!!!!
It duly arrived & this one was the Peizo igniter type. Much better in my opinion as it don't rely on 12volt to spark it & the Peizo igniter is easy to replace if it fails.
I tried clicking the igniter few times &, seeing no flash or spark through the little view glass, thought nothing of it other than that maybe it was a weak spark or it was sparking just out of line of sight. Anyway, I bench tested it, as before,(in the garage this time)& made sure I purged all the air out of the fire &, although by then I'd been clicking the igniter in start mode for that long the place was reeking of gas, it would not fire up.
So, what's wrong?
I can't believe the guy that sent it lied about testing it & it being fully functioning. I can't believe the igniter just gave up the ghost in transit. The igniter connections are undisturbed & still in place. So what's happening? I can't get through to the supplier....... he must be on holiday or something.
I think I need a sure fire way of not just testing the igniter, but also testing it in-situ so that all connections as well as the business end, where the spark is supposed to occur, get tested too.
Anyone?
The weather's getting cooler & we want to do some off-mains caravanning.
John
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