Not wanting to "butt in" on your conversation guys cos you lot are more experienced in this field than i am, but all this changing the module when the fusible plug blows was originally caused by "Carver" in the 1st place- and i quote the March 1985 service bulletin (a)" the purpose of the fusible plug is to act as a safety device, should the burner assembly continue to operate, as a result of a failure within the module. Recently there have been a few cases, where swarf on the seat of the gas valve has meant that the heater continues to heat up beyond the set temperature. In due course the fusible plug melts, releasing the hot water/steam, which extinguishes the burner flame. Melted solder on the burner is a good witness mark, as to this sequence having taken place, and of course water will leak from the fusible plug. AFTER SUCH A SEQUENCE BOTH THE MODULE AND FUSIBLE PLUG MUST BE CHANGED"
(b) Since the severe winter weather, it has been noticed that when filling the Cascade 2, water can leak from the fusible plug, even before the heater has been switched on. Recent testing has found that some plugs have suffered from water freezing in the plug itself, causing the "solder slug" to be forced out of its plastic holder, and drop inside the tank. In this case it is NOT NECESSARY TO CHANGE THE MODULE, but only the fusible plug. But do check that the burner etc., is fully dried out before trying to light the unit. The latest fusible plugs should not suffer from this freezing condition"
But of course you know this and i sit here with my ears burning and the computer ready to overload with the replies.... and im in a bad mood cos my horses have lost ha ha.
Have a nice weekend, Mark http://www.callendercaravans.co.uk
Friday, 8 April 2005