Question about RTO Balboa, Heater w/Pressure Switch

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Just fitted 3.0 balboa heater element filled tub switched on pump comes in but heater light not coming on could it be the pressure switch how can i test

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You can test the pressure switch using a multimeter. When the system is running (pumping water) the pressure switch should have voltage at both terminals, if the pump is on and there is only voltage on 1 terminal, you need a new pressure switch.

Posted on Apr 05, 2011

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The red light on heater won't turn on


This is an indication that the pressure switch is not working. When it completes the circuit thru the pressure switch it send power to the heater. It is the last fail-safe before power goes to the heater.

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Balboa 3 Amp Spa Heater Pressure Switch 2 0 PSI 30408

Aug 09, 2016 | Pool & Spa

1 Answer

My Balboa 300F hot tub will not heat up. I am not able to get it out of economy mode. What can I do?


First, balboa does not manufacture hot tubs! They make control systems for hot tubs. If you are no longer able to switch between modes, then your topside control panel buttons are dead or falling. But... Even if you are still in economy mode, spa should still heat up. Once a demand for heat is recognized, you have a "Heat Call" and heater should come on. Is the "heat on" light, illuminated? If so, water should be heating, if not heater element may be bad? A multi meter would be good here: is there proper voltage at terminals on circuit board to heater? If so, bad element! If no voltage, then heater is not necessarily bad, probably just fine, I would then look at sensors? Good luck

Feb 23, 2015 | Pool & Spa

1 Answer

I have an older Jaccuzzi hot tub w a balboa h136 board and single button topside control. The hot tub will not heat. The LED lights up on low speed and goes off on high speed. I just replaced the heater a...


You have voltage across the element but no heat....

Disconnect one element connection and do a resistance/continuity test. Or use a clamp to measure running current.

Feb 13, 2015 | Jacuzzi Home

1 Answer

I replaced the pump motor on my hot tub. After replacing it, the motor would not come on. I ended up replacing the circuit board. The motor now comes on, but when it starts to heat I get a HL code. I...


Balboa switched to using two temp sensors a few years ago. So you won't find a flow or pressure switch. One of your temp sensors may be bad. With out knowing which pack you have I can't do much else for you.
I had a few issues with retro fitting these packs in older hot tubs. If the sensors read more than 2 degrees in diffrence the pack will either give you a flow or overheat message. Depending on witch one reads higher. Try swithing them by swapping them where they plug in at the board. If your still getting the same error you may have a flow issue. If this proves to be the case you can plumb in a by-pass allowing some of the water past the heater. It's not recommended by balboa but has solved their temp sensor errors for me in the past.
Also try putting it in test mode. You'll have to look up how to do it for your model. This is done with a dip switch on the board. Then read what the temp reading on temp sensor one and two is. If the reading are more than 2 degrees apart and your absolutly sure the sensors are good create a by-pass. This will solve the issue. Also be sure to put a ball valve on your by-pass to allow for ajustment so that you can get the maximum flow thru the heater w/ out getting the HL error.

Oct 10, 2013 | Pool & Spa

1 Answer

QCA Spa Contol Panel Issues


Flow issues can be frustrating, check each of the following
1. Low GPM.
2. Low Water Level.
3. Blocked Suction Fitting.
4. Blocked Skimmer.
5. Dirty Filter. (Try run system w/o Filter)
6. Too Many Closed Jets.
7. Closed Slice Valve.
8. Heat Related Pump Not Running.
9. Heat Related Pump Not Primed.
10. Malfunctioning Impeller.
11. Incorrect Heat Related Pump.
12. Circ System Misconfigured.
13. Sensor Malfunction.
If none of those help try this. There is a link to s Balboa site for service tech diagnostic help. There are step by step instructions for diagnostics.

Jan 23, 2012 | Pool & Spa

1 Answer

My Oaisis II hot tub stays at 103 and now it's dropped down to 68 degrees for the past 3 days? Could there be a problem with my heater element? Or is there a sequence of resetting the temp buttons on top...


Information on the care of your product and troubleshooting is available here:

http://www.oasisleisure.ca/customer_care/SpaCare.html

Did you have a recent power outage? It is necessary to reset the temperature after a power outage.

Check the temperature setting on your hot tub; if it has defaulted do to a power outage reset to the desired temperature. If it is still set at your desired setting and is operating at 68 degrees then there is a problem that is preventing the tub from reaching the set temperature.

Some possible causes and actions are:

Pull filter (see if light comes on) / Replace filter
Knife valves not fully open / Open knife valves

Pressure switch cut of calibration / Adjust pressure switch
Faulty Pressure Switch / Replace pressure switch

Air leak, check pump suction line / Tighten pump union
Heating element corroded / Replace element

Faulty control panel / Replace panel

Find the Manual for you specifc model for more explansyion on Troubeshootig.

Feb 06, 2011 | Home

1 Answer

The hot tub is no longer heating


There are two main items to check. I do not recommend them unless you are qualified to work with electrical. The 2 main things that this could be are:
1. Pressure switch failure( (hot tubs need a sensor to tell the computer when it is safe to operate. If the pressure switch is out, then it will not heat) if this is a hot tub with a 24 hour circulation pump, then the pressure switch would actually be a flow switch.
Fix: Replace pressure switch/ flow switch
2. Heater element failure. (This type of failure typically trips a GFCI breaker)
if the heater element is out, then it will short to ground causing the hot tub to shut down repeatedly.

Notes: Are there any trouble codes coming up on the display panel? these help out greatly when troubleshooting like this via- messages

Oct 21, 2010 | Qca Spas Paradise Series Paradise Supreme...

1 Answer

I have a 2004 great lakes hot tub with a balboa controler. My hot tub heats up fine when the pump runs on high but the temp light never comes on when the pump runs in low.


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.

Feb 04, 2010 | Qca Spas Jewel Series Topaz Plus Hot Tub

3 Answers

My new heater does not work on my hot tub. I have a Jacuzzi Z135 Model s2600000 with a Controller version r574 and a Balboa 58028 that has been replaced by the 53349 heater (4 KW, 1 PSI set Pressure...


Test across both terminals at the same time. If you are getting 230V, disconnect power and check the resistance across the terminals. For 4kW, you should get roughly 13 ohms. If not, the element is bad.
If you get 0 Volts across the terminals, the tub is not heating. ManyBalboa packs switch both leads to the same leg of power, so you can get 120V to ground from each terminal, but you get 0V from terminal to terminal.
The clincher here is that the "heater on" light is off. I would double-check the pressure switch. You should test it with the tub running in heat mode. Disconnect one of the flag terminal leads from the switch, THEN test for continuity across the terminals. If you get none, you have either low flow or a bad pressure switch. You can verify by jumping the two wires together and see if the "heat" light comes on. Again, check for flow. I would run any of these tests with the filter removed. The symptoms you describe are very commonly caused by a dirty filter causing low flow. Again, pressure switch test. A bad sensor would cause the "current temp" to read too high, and a hi-limit problem would cause the little "heater-on" light to flash. Unless that little light is just dead (I've never seen it go bad), everything you say points to the pressure switch (or a dirty filter).

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