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Subject Topic: Carver Cascade Rapide - mystery problems Post Reply Post New Topic
03/8/2016 at 6:50pm
 Location: Flintshire
 Outfit: ABI Jubilee Rallyman
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Hi everyone,

I'm having some on going problems with my water heater. Basically, it's not working: it won't light, the red light comes on after 10 seconds. Initially it would light but then turn off the gas, then it started just not lighting at all, even though the spark was going.

Sometimes, however, it would light and work (though rarely).

After lots of trouble shooting, the place I got my caravan from exchanged the burner unit (though they couldn't find a fault with mine) and even gave me a new wall switch incase that was faulty.

I fitted the new unit and everything worked (yay), but then the next day it just wouldn't light again. So I fitted the new wall switch, and still it won't light.

I have taken the cover off outside to see what was happening and there doesn't seem to be any gas coming through (no smell) and there doesn't seem to be a spark, even though it makes the clicking noise.

I've checked the wiring from the wall switch to the burner unit and that seems fine.

I'm now at a complete loss as to why this heater isn't working! Except, occasionally it does...

What could possible be causing this???

Btw, gas is coming through to the stove and fridge without issue.

AND my pregnant wife and I are living in this caravan for the next month!!


03/8/2016 at 8:00pm
 Location: West country
 Outfit: Mondeo
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Manual here

http://www.swift-owners-club.com/support/oem-handbooks/carver/carver-cascade2-rapide.pdf

It does mention this

The Cascade Rapide GE, in addition to the above safety features, incorporates a resettable high limit thermostat. (This is the red button on the rear of the heater, beneath protective cover, To reset, push the button.)

Also mentions air in the gas pipe.

Also says this

Red light comes on and after 30-40mins, water and steam
Fusible plug blown
Replace module and fusible plug


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03/8/2016 at 11:27pm
 Location: Lichfield
 Outfit: Coachman Amara 450
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The source of the ignition comes from the leisure battery so a low voltage battery will contribute to a weak spark thus struggling to ignite the gas. You need to checked the battery voltage with a voltmeter which should read 12.7 volts or above so if the reading is below this then the battery is partly discharged.


05/8/2016 at 8:38pm
 Location: Flintshire
 Outfit: ABI Jubilee Rallyman
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Hi, thanks for the help.

Unfortunately none of these have fixed it.

Tried pushing in the red tab thing, but it's already pushed in.

I've changed all fuses I can, except the spark fuse within the unit itself, though its very unlikely it is that as the spark was working previously and I had the same problem.

Battery is charged and in good condition.

I'm at a total loss!


07/8/2016 at 11:25am
 Location: Cheshire
 Outfit: Pegasus 534
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If you can hear the spark clicking but can't see it its possible that the spark is tracking somewhere where it shouldn't be. Check the lead from the igniter to the pilot light


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07/8/2016 at 11:48am
 Location: Cheshire
 Outfit: Pegasus 534
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Try and contact Gary at arc systems, he apparently specialises in these heaters


09/8/2016 at 8:14pm
 Location: Flintshire
 Outfit: ABI Jubilee Rallyman
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Thanks for your help, I might try speaking to Arc systems as they seem to be the experts in this area.



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