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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.
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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: 1 year ago.
Category: Pool and Spa
Customer: replied 1 year ago.
Should i have picked a expert first ? How long to get a response?
Expert:  garrygoeson replied 1 year ago.

Hi:

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

Customer: replied 1 year ago.
Hi garry. Glad to hear from you
Customer: replied 1 year ago.
What do you think of my question?
Expert:  garrygoeson replied 1 year 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 1 year ago.
I have a dually pump.
Motor center and one pump each side
Expert:  garrygoeson replied 1 year ago.

What model and year is your spa?

Customer: replied 1 year ago.
Only one pump runs
Customer: replied 1 year ago.
Iam not sure of the year it is a cal spa
Customer: replied 1 year ago.
This was a hand me down sort of say
Expert:  garrygoeson replied 1 year ago.

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

Expert:  garrygoeson replied 1 year ago.

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

Customer: replied 1 year 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 1 year ago.
For some reason the spa does not run at all unless i press the spa button
Customer: replied 1 year 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 1 year 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 1 year ago.

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

Customer: replied 1 year 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 1 year ago.
I will send a picture now is that ok ?
Expert:  garrygoeson replied 1 year ago.

If you could send a pic, that may be helpfull

Expert:  garrygoeson replied 1 year ago.

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

Customer: replied 1 year ago.
Iam using the just answer app for some reason having trouble sending the pictures
Customer: replied 1 year ago.
Expert:  garrygoeson replied 1 year ago.

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

Customer: replied 1 year ago.
Customer: replied 1 year ago.
Customer: replied 1 year ago.
Expert:  garrygoeson replied 1 year 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 1 year 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 1 year 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 1 year ago.
Customer: replied 1 year ago.
That pump conects to the heater
Customer: replied 1 year ago.
What has me confused is that if i turn on jets (high speed )
Everything works as it should
Expert:  garrygoeson replied 1 year 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 1 year 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 1 year 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 1 year ago.
It has me confused as well lol
Expert:  garrygoeson replied 1 year 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 1 year ago.
No nothing comes on the display it acts as normal.
Customer: replied 1 year ago.
Fyi i have bypassed the safety suction feature. A while back but it worked fine after that point.
Expert:  garrygoeson replied 1 year ago.

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

Customer: replied 1 year 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 1 year ago.
To check the voltage coming from the spa pack to the pumps ?
Expert:  garrygoeson replied 1 year 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 1 year 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 1 year 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 1 year 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 1 year 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 1 year 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 1 year 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 1 year 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 1 year ago.
That is possible
Expert:  garrygoeson replied 1 year 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 1 year ago.
How can I determine that for sure ?
Customer: replied 1 year ago.
What would be the correct reading? I will do this later today
Expert:  garrygoeson replied 1 year ago.

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

Expert:  garrygoeson replied 1 year 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 1 year ago.

I saw the schematic in the last pic you sent

Customer: replied 1 year ago.
Customer: replied 1 year ago.
Checking voltage from the area circled (the connection point of pumps)
It is reading correctly 240 volts
Expert:  garrygoeson replied 1 year 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 1 year ago.

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

Expert:  garrygoeson replied 1 year ago.

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

Expert:  garrygoeson replied 1 year ago.

ok?

Customer: replied 1 year ago.
Replace the motor it self or could I rebuild the pump?
Thank you for writing back
Customer: replied 1 year ago.
I will reach out tomorrow
Expert:  garrygoeson replied 1 year ago.

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

Expert:  garrygoeson replied 1 year ago.

Did this answer this for you?

Customer: replied 1 year ago.
Understood thank you.
I will check tomorrow for low voltage and contact you again
Expert:  garrygoeson replied 1 year ago.

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

Expert:  garrygoeson replied 1 year ago.

Will check back tomorrow evening.

Expert:  garrygoeson replied 1 year ago.

Have a good night

Customer: replied 1 year ago.
Yea I understood. I meant check if it is not reading as it should
Customer: replied 1 year ago.
You too and thank you
Expert:  garrygoeson replied 1 year 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 1 year ago.

Hi:

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