Question about Qca Spas Jewel Series Topaz Plus Hot Tub

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Z110 jacuzzi heater keeps cutting off after 30 minutes. Changed the heater, the pressure switch and tried running with the high limit sensor pulled out of the housing.

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Question is about the heater - is the tub up to temperature when the heater turns off or is the tub running in the filter cycle?

Posted on Sep 06, 2010

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The water temperature needs replacing not the high limit found usually in the filter well

Posted on Jul 20, 2009


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1 Answer

Have a jacuzzi model H25000, z150/350. It won't get to high temperature only temp up to 90 degrees. What can I do?

This usually relates to one thing: a dirty filter. Here's why: pump tries to such enough water through the filter. It can't because it's dirty so the water pressure is too low to allow the heater to come on. So, it keeps running trying to heat. Pull out your filter and leave out for a day/ your temp should go up..if it does not then you will need to look at the pressure switch isn't closing. The switch can be adjusted for a very temporary fix. The permanent fix is replacement. Hope this helps Happy New Years Tim

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I have a Ducane MPGA100B4B gas furnace. The furnace only runs for about a minute then shut off. It does this far too frequent.\r\n First the induce draft blower turned on for a few seconds to check for...

Hello, sounds like the limit switch is opening on the furnace.Usually when a furnace goes off on its high limit is becuase the airflow is being restricted making the furnace overheat. a limit switch is there to protect the furnaace from overheating, most cuases are either dirt or the blower motor not running up to speed, anything that cuts down on the airflow will cause the high limt switch to open.

Feb 24, 2011 | Heating & Cooling

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Compressor cuts out after 20 minutes then restarts after maybe 20 minutes

This is usually due to low limit or high limit cut off switches. Basically when it's low on refrigerant the unit cuts out to protect the compressor. Then after 20 minutes the pressure equalizes and the unit kick back on, or the opposite for the high limit switch.

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The water does not get hot just warm it is a brand new jacuzzi spa

Check the Temp Sensor and the High Limit sensor on the system. Make sure the heater light is coming on. if the heat light is not on then the pressure switch is not working but I am thinking more like the Temperature Sensor is not working.

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Installed new heater it ran for 15 minutes and the gas cut off. The combustion fan and the fan keeps running, the only way to stop them from running is to throw the breaker. LED light blinks 4 times, book...

the high limit is an over heat switch that could mean the unit is over fired. you would need to time input or check manifold pressure. the roll out switch is a switch that shuts the unit off if combustion is spilling at the divitor on the unit where the vent connects. with this you need to check your venting

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Heater fires but cuts out again after 30 seconds

sounds like flame sensor.try taking it out and polish with steel wool.flame sensor is a rod that is in flame with a single wire going to it.If there is no flame sensor,check limit switches,but they usually have to be reset when triped.high limits usually reset when cool.check flew for blockage if theres air conditioning,check a coil could be dirty.if every thing else is ok then control board is bad.real hard for nubies to diagnoise.

Dec 29, 2010 | Heating & Cooling

1 Answer

Heater will not stay on

when a heater runs for 30 seconds or les some heaters run or about 1 minute this is mostly a problem with how much water is getting in the heater if is too little the pressure switch cuts the heater off or the high limit switch is shutting off the boiler why because the small amount of water getting inside your heater get hot to fast and make the heather to get so hot and the high limit switch turns the heater off the solution is to check your filter make sure is clean or cleaned they get dirty soon if your filter is clean and still doing it check the bypass in the heater normally is located next to the lines going in and out in the heather lines I have fix so many heaters my self I use to have a business in california as swimming pools repair so I know this and your heater is not to big to say is your gas regulator gs regulator is a common problem on heaters ranging on size from 30-36-40 BTU

Jun 14, 2009 | Pentair Minimax NT Heater

1 Answer

Mini Max Digital Control FLO error message

The pressure switch is on the inlet/outlet manifold. It has purple wires running to it. Try taking a wire and unplugging the pressure switch and jumping the 2 wires together.

May 30, 2009 | Pentair Minimax NT Heater

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