Hello, ok heres the story...got in the tub the other night, and water wasn't hot enough, no "ok" light on that the tub had reached set temperature.

I went to the breaker (siberian tub 2 breakers, 1 heat, 1 pumps) and the heater one was tripped. Odd....i reset it.

Next morning still no heat (recirc pump is OK). I pull the cover (heater not hot), i pull the IQ2000 cover, pump & heater leds are on (indicating the heater should be on),nofault 6000 hi temp reset is not tripped. I disconnect the heater plug to see if the heater light goes off & put it back. About 5 minutes later the a relay on the daughter board flames up ...the heater relay had burnt up.

What is the deal?!?! I'm assuming the heater was bad, and when it reset for some reason it took out the relay board???

I'm also assuming you can't purchase just the relay board?

I'm wondering why the relay blew i assume a short of some type in the heater? would like to figure this out before buying and hooking up new board and heater. A little surpised the relay went up in flames!!

thanks for any help! - shawn

On an IQ2000, I don't think there's a heater relay board, but there are a couple of 18v DC coil 30 amp T-92 heater relays, as well as the main PCB. (Are you sure it's not an IQ2020 control box?)

Anyway, just OHM out the heater to see if it's bad. I doubt it, probably just a problem in the main PCB.

If you do indeeed have an IQ2020 and not an IQ2000, the heater PCB may be purchased seperate from a complete IQ2020 control box, part number 73355 if memory serves correct. The part has been imporved for exactly the type of problem you describe.

Hello thaks for your reply! yes you are right my bad, its an iq2020....well i'm happy to hear i can buy just the heater pcb!

the heater is the original nofault 6000. Is there a problem with those also? searching the forum turns up all kinds of things about these have been superceeded,etc... just kind of wondering if the heater wasn't bad why it would trip the breaker then blow the board...i'll check it

thanks!

Swine, i also found your post on this in search history
http://spaforums.com/viewtopic.php?t=25 ... ght=iq2020

and this pcb board is also a 2001. I need to drain anyways so i'm waiting for it then i'm going to ohm test the element. But if the element is ok, from your advice in the above link , ...then its ok to keep the original nofault 6000?

I'm not sure if i tested this nf6000 correctly as it doesn't look like any other heater elements i see online...looks sealed. anyways i ohm tested the terminals at the box and got 11ohm, so i'm assuming this means its good?

Also where can i order a replacement heater control board?

you're talking about this board right?

http://spapartsnet.com/Hot-Springs-Part ... 1_1_1.html

Unfortunately, some circuit boards with these heater relays just decide to flat out blow up.

The relays don't like the solder flow and poof.... everything goes to toast. Like Swine said - your heater's probably still good. Your board was just tired that's all.

PS: Swine, we need to talk my man...

If the heater has a closed circuit, where you have resistance, it's good. Once you replace your board, if you have a meter with an amp clamp you can see if it's drawing amps.

Yep thats the part. Thanks!

Ok got my replacement relay board but....

history: this spa has been installed for several years without trip problems. Everything below is without trying to turn on pumps,etc but there is a circ pump i believe that cranks up automatically

when the heater relay on the heater relay board burned up, i noticed the spa still had power (green light on main circuit board). turned it off, back on still light ok...figured main board ok, relay board blew. So turned everything and breakers off untill new relay board arrived.

Tonight before installing new relay board i cut on the breakers and they tripped. Disconnected heater. Again the main pump breaker (main board power also presumably??) also tripped immediately, its the 20amp one.

I went ahead and installed the new relay board. same thing..it tripped. Put old board back because i didn't want to take a chance of something blowing up the new one. Figured its just the relay on the heater board blown so best off using that one for testing.

so now i'm stumped with this ground fault....not the heater circuit since i disconnected that and its also on separate breaker on the siberian. I also disconnected the main wires from the relay to the main board (still of course relay board connected by the pin connector) ...still tripped immediately. The wierd thing is it didn't do it the other day when i turned it on to make sure the main board still had power.

Any suggestions? i disconnected light, heater mains, heater sensors from main board also.. same problem. sheesh hope the main board is still good.

thanks,shawn

Did you configure the board power jumpers correctly?

Well i only replaced the relay board and it doesn't have any jumpers that i see...the old main board stayed the same..which is where the jumpers are. Plus i put the old relay board back since only the heating relay is burnt on it gfci trips with either..so figured better to figure this out with the old relay board than the new one..

read the new relay instructions and terminal,etc are same.