Have a Hot Springs hot tub (1999) with Balboa board. Just installed a new flow thru heater. Tub in not getting hot! The light comes on as if the heater is running and the pump runs.

Testing I have 121volts on each lead of the heater coil. The coil test 10.7 ohms. I do hear some type of static type noise in the contol box.

Thanks for any help.

Axle

You sure it's a balboa board?
When you say "Coil" do you mean coil of the relays, the heater element, or the load terminals of the relay?

Are you sure you're testing the coil voltage on the relay's? The coil voltage is 18v DC.

But if you're getting 120v AC on the load portion of the relay, check your heater OHM's. If by "Coil" OHM's you mean heater element OHM's, the heater is OHM's out OK.

Also, be sure to measure across the heater relay for voltage, not one leg at a time.

You have a serial number? Wondering if that's not a Hot Spring, but a Hot Spot or Solana, which use a flow-through heater. If so, disregard earlier troubleshooting tips!!!

I was testing for voltage at the heating element, the voltage here is 121v to ground on each side, not voltage reading on each side of the heating element.

the ohms reading is the heater element its self. the board is labeled Balboa and the manual says hot springs.

axle

wHERE IS THE HEATER RELAY?

What's the spa serial number?
Also, don't measure for voltage one leg at a time. Measure across the heater terminals.

The voltage across the terminal (heater) is 0 volts. Where is the serial # located?

serial # is located in the equipment compartment on a sticker. Look foe WATKINS MFG. spa model........ serial# m-35868, G-47789, etc. The serial # starts with a letter, followed by numbers as above. That number tells us a lot about the spa.

Maybe take a pic of the tub if you can't find the serial number " title="Very Happy" />

The number I found under model is

WH-MAS25- CCAJ


60hz - 9

I'll try to attach a pic

Thanks

ps. - today I hear like a clicking sound in the box

Please post a pic- the serial number posted doesn't resemble any of the Hot Spring spa's.

Here are two pic's of the control and Schematic

thanks

I found another name it's Holiday Springs spa not Hot springs...

sorry!

If you're getting a heat indicator light, but no voltage across the element terminals, assuming no burnt wires and breaker and all connections are good, you'll need a new circuit board. You can try fiddling with or replacing the heater relay on the PCB, but unless you're quite good with a soldering iron...

110v on each side of the heater poles (going to ground or neutral) doesn't mean the heater is getting the correct voltage. Always measure across the poles.

I did have some burnt wires earlier back. I also had to replace the 30 amp slow fuse. Where is the heater relay? Are they the two units up in the left side of the pic?

I did check all the connections, pulled off a cleaned and reattached. Saw ome corrosion but nothing obvious. I now have 234 volts acroos the heater element. The temp has gone up about 3 degrees. Don't know now if I found the problem or if there is a intermintent.

Thanks
axle

Hot tub is heating OK... Thanks for everyone's help!

Im having a really similar problem, but I noticed someone on here said to not check the voltage from each lead to the ground but to check them across each other.

I have 115v from the white lead to the ground and 0v from the black lead to the ground.

I have 10 Ohms of resistance across the black and white wires to the heater.


Is my whole board bad or just the relay?

Tiger River Bengal M
220v

i have a 97 hot springs grandee
i just replaced the heater
when i activate the circuit breaker
the red power light on the spa panel after a few minutes start to blink.

any thoughts on possible problem?

Small 24 hour circ pump not pushing water (air bubble, dirty filter, or bad pump likely culprits)
Bad thermistor