lambsarse Posted December 13, 2016 Report Share Posted December 13, 2016 I have a old Spa made by Spafrom, it has a balboa SF172 controller. When ever the blower or jets are turned on the heating element is switched off. This then makes the hottub get too cold after about 30 mins of use. Is this a fault? can I stop this from happening??? Thanks Jim Quote Link to comment Share on other sites More sharing options...
lambsarse Posted December 13, 2016 Author Report Share Posted December 13, 2016 This is the manual for my controller: https://www.poolandspacentre.co.uk/documents/Balbo_M7_guide.pdf I think its the m7 value that I have, Quote Link to comment Share on other sites More sharing options...
mrwrick Posted December 13, 2016 Report Share Posted December 13, 2016 it sounds liked you have a model that is configured to run either jets/blower or heater. If you feel heated water coming into the spa without jets running see if the warm flow stops when jets are turned on, then warm flow again when jets are turned off. However, if your model is supposed to be able to run both jets and heater simultaneously you may have a relay issue. Check the power specifications for your unit. In the US a 110/120 volt unit will cycle either heater or jets, but a 220/240 volt unit will run both simultaneously. I believe this was common on models built 30-35 years ago. Quote Link to comment Share on other sites More sharing options...
mrwrick Posted December 13, 2016 Report Share Posted December 13, 2016 Looking at the manual you provided the unit is set up for a set 230 volts, so both heater and jets are probably supposed to run simultaneously. There are numerous tests described to troubleshoot various problems. In one section on the heater function and water temperatures it mentions operating the blower to cool the temp. You may simply be unintentionally cooling the water by running the blower so long. Contact Balboa directly for advice from a technician. Quote Link to comment Share on other sites More sharing options...
DaveA Posted December 13, 2016 Report Share Posted December 13, 2016 Not sure what you mean by the blower. Do you mean turn on the pumps? Quote Link to comment Share on other sites More sharing options...
lambsarse Posted December 13, 2016 Author Report Share Posted December 13, 2016 Not sure what you mean by the blower. Do you mean turn on the pumps? I mean the air pump, or the pump for water jets, as soon as I turn either on the water heater turns off Quote Link to comment Share on other sites More sharing options...
lambsarse Posted December 13, 2016 Author Report Share Posted December 13, 2016 Looking at the manual you provided the unit is set up for a set 230 volts, so both heater and jets are probably supposed to run simultaneously. There are numerous tests described to troubleshoot various problems. In one section on the heater function and water temperatures it mentions operating the blower to cool the temp. You may simply be unintentionally cooling the water by running the blower so long. Contact Balboa directly for advice from a technician. I tried to contact Balboa, but they told me to speak to the spa manufacture (Spaform), who I don't think are still trading. on page 26, under dip switch settings, I can see that s10 is to set 30/50Amp, is this what I need to change?? maybe if it's currently set to 30Amp it will not have both on together? Quote Link to comment Share on other sites More sharing options...
Dr. Spa Posted December 15, 2016 Report Share Posted December 15, 2016 First, you're in the UK? Spaform is long out of business. What you're experiencing is normal. Most homes in the UK, and even most of Europe, have rather small electrical services (in the US most homes have 100amp - 200amp main service panels...many European homes have a 40amp service). IF, you change it from 30 to 50 amps, it may then operate the heater and high speed pump at the same time (I'm not familiar enough with this particular unit to say for sure), HOWEVER, make sure your home has enough power for this, AND ALSO have your electrical wiring feeding the spa inspected to be sure it's LARGE enough to handle that much current (it's probably not and will need to be upgraded). LASTLY, be careful taking advice from here. The UK has VERY different electrical requirements than the USA and someone NOT familiar with that could easily give the wrong advise by mistake. Quote Link to comment Share on other sites More sharing options...
lambsarse Posted December 20, 2016 Author Report Share Posted December 20, 2016 Thanks for all the advice. I've changed dip switch10 on my board and the heater still remains to operate normally when the blowers and jets are on. My Hot tub stays nice and warm when I'm using it now on those colder days. Quote Link to comment Share on other sites More sharing options...
Barkey Posted March 8, 2021 Report Share Posted March 8, 2021 Hi. I have a GL2000 pcb on my spaform tub and as the previous person reported my heater turns off when my jets or blower are turned on. Im sure it never did this before. Do you think it could be a relay down on the board? Has anybody else had this? Rich Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted March 9, 2021 Report Share Posted March 9, 2021 4 hours ago, Barkey said: Hi. I have a GL2000 pcb on my spaform tub and as the previous person reported my heater turns off when my jets or blower are turned on. Im sure it never did this before. Do you think it could be a relay down on the board? Has anybody else had this? Rich Did you read the thread or just reply to the topic? If the answer isn't in here, start your own thread with details of your spa including a pic of the circuit board and wiring diagram on the box cover. 1 Quote Link to comment Share on other sites More sharing options...
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