How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask garrygoeson Your Own Question
garrygoeson
garrygoeson, Home Appliance Technician
Category: Pool and Spa
Satisfied Customers: 469
Experience:  Over 27 years Repairing Pool & Spa Equipment,Gas Heaters,& Whirlpool Bath Tubs. Certified by many Pool & Spa Manufacturers.
64048604
Type Your Pool and Spa Question Here...
garrygoeson is online now
A new question is answered every 9 seconds

I have a older cal spa hot tub. With a dually pump. The pump

Customer Question

Hello. I have a older cal spa hot tub.
With a dually pump.
The pump on the right low speed does not start or make any sound. Therefore no circulation in the hot tub.
Heater stays off. But when i press the jets button the jets come on the heater turns on. And the tub gets hot as it should but jets have to keep running.
Could this be a capacitor or is did the one pump run its course.
How can i be sure?
Thank you in advance.
Submitted: 12 months ago.
Category: Pool and Spa
Customer: replied 12 months ago.
Should i have picked a expert first ? How long to get a response?
Expert:  garrygoeson replied 12 months ago.

Hi:

My name is Garry. I'll be glad to assist with your spa.

Customer: replied 12 months ago.
Hi garry. Glad to hear from you
Customer: replied 12 months ago.
What do you think of my question?
Expert:  garrygoeson replied 12 months ago.

I'll need a bit more info. Is the pump on the right a dually pump? Or is it a circulation pump? Every Cal Spa is different.

Customer: replied 12 months ago.
I have a dually pump.
Motor center and one pump each side
Expert:  garrygoeson replied 12 months ago.

What model and year is your spa?

Customer: replied 12 months ago.
Only one pump runs
Customer: replied 12 months ago.
Iam not sure of the year it is a cal spa
Customer: replied 12 months ago.
This was a hand me down sort of say
Expert:  garrygoeson replied 12 months ago.

Do you know the model name? Cal Spa is the manufacturer with many different models

Expert:  garrygoeson replied 12 months ago.

On the dually pump, both pumps should run if the motor runs

Customer: replied 12 months ago.
Could i maybe send a picture would that help ?
Like i said i know very little about the model of this unit as iam not the original owner
Customer: replied 12 months ago.
For some reason the spa does not run at all unless i press the spa button
Customer: replied 12 months ago.
It was running until Saturday afternoon
After shutting it down when i powered it back on. It would not run at all
Expert:  garrygoeson replied 12 months ago.

The one motor has a shaft on both sides that should turn both pumps. Is this the pump you are having trouble of only one of them running?

Expert:  garrygoeson replied 12 months ago.

Some spas have a separate circulation pump in addition to the dually pump.

Customer: replied 12 months ago.
only the one on the left runs when i hit the jets button.
At that point i can turn up the heat and the heater will start up and heat as it should
Customer: replied 12 months ago.
I will send a picture now is that ok ?
Expert:  garrygoeson replied 12 months ago.

If you could send a pic, that may be helpfull

Expert:  garrygoeson replied 12 months ago.

Try to get a close up of the pump and the control box it is connected to.

Customer: replied 12 months ago.
Iam using the just answer app for some reason having trouble sending the pictures
Customer: replied 12 months ago.
Expert:  garrygoeson replied 12 months ago.

I think your pic may have come through. Stand by while I check.

Customer: replied 12 months ago.
Customer: replied 12 months ago.
Customer: replied 12 months ago.
Expert:  garrygoeson replied 12 months ago.

The pump that is shown on the right side of the control box, is that the dually pump? From the photo it looks like a single pump.

Expert:  garrygoeson replied 12 months ago.

I can see this pump is the pump that is connected to the heater. Is this the one that does not run?

Customer: replied 12 months ago.
It is a dually pump sorry if the pictures are not clear.
There is no other pump on the spa
A single unit (dually pump ) located behind the spa pack (heater)
Customer: replied 12 months ago.
Customer: replied 12 months ago.
That pump conects to the heater
Customer: replied 12 months ago.
What has me confused is that if i turn on jets (high speed )
Everything works as it should
Expert:  garrygoeson replied 12 months ago.

So when you set the spa to heat, Are you positive the pump on the right (going into the heater) does not turn?

Expert:  garrygoeson replied 12 months ago.

It doesn't make sense to me, because if it is a dually pump, and the pump on the left turns, the pump on the right should also turn because there is only the one motor with a shaft on each end of the motor turning both pumps simultaneously.

Customer: replied 12 months ago.
Iam positive
If i do not touch the jets button.
Simply power on the spa.
And set my temperature to lets say 102
Absolutely nothing will happen.
No sound nothing.Only when i press jets
They will come on and at that point heater light will be lit
And it will start to heat
Customer: replied 12 months ago.
It has me confused as well lol
Expert:  garrygoeson replied 12 months ago.

When you set the temp to 102, and don't touch the jet button, do you see any fault code messages on the display?

Customer: replied 12 months ago.
No nothing comes on the display it acts as normal.
Customer: replied 12 months ago.
Fyi i have bypassed the safety suction feature. A while back but it worked fine after that point.
Expert:  garrygoeson replied 12 months ago.

There is on thing I think you could check. Do you have a volt meter or multimeter?

Customer: replied 12 months ago.
Today i had a spa tech come out. He didn't do much at all before telling me i needed a new pump.
I just want to be sure before spending the 700 for a pump
Customer: replied 12 months ago.
To check the voltage coming from the spa pack to the pumps ?
Expert:  garrygoeson replied 12 months ago.

Well, if you have a meter, I'll can help you measure the voltage at the low speed winding on the pump.

Expert:  garrygoeson replied 12 months ago.

When you set the temp to 102, the pump should start on low speed. If you are getting voltage there, but the pump wont run, that would confirm a faulty pump.

Customer: replied 12 months ago.
I don't have one at the moment.
But i can check tomorrow.
Or lets say later today.
But the technician did check voltage going to the pump and told me it was sending the correct amount of power to itAnd that is when he said the issue was in the pump it self
Expert:  garrygoeson replied 12 months ago.

OK. If you believe he did this correctly, then that is probably what it needs. From the photos, there is a lot of rust and corrosion on the motor, so it is not out of the realm of possibility that the pump could be shot.

Customer: replied 12 months ago.
But only the one pump on the right ?
Being that it is one motor operating both pumps.The motor is good if the one pump runs as it should.
What can be wrong with the failty pump ?
Could it be bearings and or seals ?
Expert:  garrygoeson replied 12 months ago.

You sent a schematic of the motor showing which wires go to the low and high speed. This is where you will need to measure the voltage to tell if it is correct to the motor

Expert:  garrygoeson replied 12 months ago.

The one motor runs on two speeds, (low and high). It may be that the low speed portion of the motor is shot, and the high speed is good.

Customer: replied 12 months ago.
I have spoken today with someone from pump repair guy joseph tamargo maybe you heard of him or seen his videos on this subject he recommended i change the pump bearings and seals
Customer: replied 12 months ago.
That is possible
Expert:  garrygoeson replied 12 months ago.

This is why you want to measure voltage at the low speed. From the photo, it looks like you will need to measure at red wire, terminal 2 and black wire terminal 1

Customer: replied 12 months ago.
How can I determine that for sure ?
Customer: replied 12 months ago.
What would be the correct reading? I will do this later today
Expert:  garrygoeson replied 12 months ago.

If the bearings were bad the motor will not run at all.

Expert:  garrygoeson replied 12 months ago.

Look at the motor label an find the voltage rating. It's not visible in the photo. It will be either 120 volts or 240 volts.

Expert:  garrygoeson replied 12 months ago.

I saw the schematic in the last pic you sent

Customer: replied 12 months ago.
Customer: replied 12 months ago.
Checking voltage from the area circled (the connection point of pumps)
It is reading correctly 240 volts
Expert:  garrygoeson replied 12 months ago.

You could measure voltage at the plug in connection at the box. I was referring to the connections at the back of the motor, but either on will work. Just make sure you are measuring the LOW speed only side of the motor, while it is trying to heat WITHOUT pressing the jet button.

Expert:  garrygoeson replied 12 months ago.

If you measure 240 volts and the motor is NOT running, this will indicate you need to replace it.

Expert:  garrygoeson replied 12 months ago.

let me know tomorrow if you like. I will need to leave for now.

Expert:  garrygoeson replied 12 months ago.

ok?

Customer: replied 12 months ago.
Replace the motor it self or could I rebuild the pump?
Thank you for writing back
Customer: replied 12 months ago.
I will reach out tomorrow
Expert:  garrygoeson replied 12 months ago.

Rebuilding the pump will not help because the motor MUST run for the pump to work.

Expert:  garrygoeson replied 12 months ago.

Did this answer this for you?

Customer: replied 12 months ago.
Understood thank you.
I will check tomorrow for low voltage and contact you again
Expert:  garrygoeson replied 12 months ago.

OK. Just keep in mind, it is not low voltage. It is LOW SPEED of motor at 240 volts.

Expert:  garrygoeson replied 12 months ago.

Will check back tomorrow evening.

Expert:  garrygoeson replied 12 months ago.

Have a good night

Customer: replied 12 months ago.
Yea I understood. I meant check if it is not reading as it should
Customer: replied 12 months ago.
You too and thank you
Expert:  garrygoeson replied 12 months ago.

If you are getting 240 volts to the LOW Speed of the pump, and the motor does not come on, you will need to replace pump motor.

Expert:  garrygoeson replied 11 months ago.

Hi:

Just checking back to see if my help on this topic was satisfactory? Please let me know what your findings are ?

Related Pool and Spa Questions