Question about Qca Spas Dream Series Dream Master Hot Tub with Flex Cover
I need to know what kind of control pack your tub has. If you can open the side panel and tell me what brand the pack is I can tell you what the error code is for.
Posted on Nov 05, 2013
SOURCE: no power to hot tub...
In all liklihood, your problem is a breakdown in the insulation of the heating element. The elements tend to be mineral insulated then metal jacketed. Once you get a bit of corrosion on the jacket and a little water gets into the mineral powder, it's insulation properties fall off sharply, shorting out the power supply.
There are two practical ways of testing this:
The pro way of doing it is to borrow a high voltage insulation tester, disconnect the power leads from the element and check the resistance between one of the elements terminals and the jacket. Treat anything less than a megohm as a failure requiring replacement of the element. (nb. This is one of those rare cases where you need to use a proper insulation tester - an ordinary multimeter often fails to find this problem)
The alternative is just to replace the element and see how much difference it makes.
Posted on May 25, 2009
check to see that the flow switch is working properly, it may not have enough flow on low speed to allow the heater to turn on. Make sure your filter/s is/are clean. If you have a pressure switch instead of a flow switch, it may need to be adjusted or replaced.
Posted on Feb 09, 2010
SOURCE: Error code reads
'Sn' is a general error message relating to the temperature sensors.
Assuming that you have a Balboa spa pack (M7 version), turn off the power and remove the spa pack cover, you'll find two temperature sensors mounted in the top of the heater tube one at each end. Follow the wiring from the sensor to the plug(s) on the PCB and check that the connections are good, they have a habit of devekoping a poor connection.
If you have a multimeter you could also check the resistance of the two sensors. They should both be the same. If they aren't the same you'll probably have to replace them.
One final thing just to check... Ensure that there are no blockages within the heater. Unless you have service/gate valves you will have to drain the hot tub, unscrew the unions and check inside the heater for debris within the heater assembly.
If you're from the UK I may be able to help regarding parts etc.
Posted on Apr 08, 2010
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