Hello & Thanks in advance for looking at my topic.
I have a Mineral Spa Hot Tub which has been working fine for the past year. The Tub is secondHand. I recently changed the water. I did a complete Pipe clean then fresh water.
The Problem I am having is, I power up the hot tub which is connected via a 50 amp fuse from the main board through Armored Cable into the tub which has it's own mini fuse board. There is the RCD. When I turn the hot tub on everything is fine until I run Pump 3. The tub has 3 Pumps plus a blower pump. Pump 1 runs the main massage jets, pump 2 runs the smaller jets & pump 3 runs the filter & heater. Nothing happens if I run any of Pump 1, 2 or blower. If I run Pump 3 on it's own without heat it will run for about 2-5 minutes. If I run the heater it trips in under 1 minute. The pumps are 2HP each & the heater is 5 Kw.
I have checked the wiring & everything is fine.
Any Ideas would be helpful.
Thank You again & look forward to any responses.[/font]
