KL8-2 to KL8-3 Upgrade

[johnf]

Hi,

    Wonder if anyone can help. My Tub has a KL8-2 Control Pack. It has packed up (relay board burnt out). The keypad was on its way out as well so I have bought a KL8-3 control pack. The pack came with the schematic diagram on the box which doesn't show a great deal of detail in terms of wiring. I've got 2 questions.

1: The heater is a 3kw unit and has a control cable (2 pin connector) but the new box has a 5 pin DIN connector on the bottom of the box marked "Heater 1 Connection" on the schematic. Does anyone know how to wire this?

2: There are 2 pumps marked P11 and P12 on the old board (they are 2 different pumps located at the back of the tub). The new board only has P1, P2, P3L, BL. The old board had P11, P12, P2, P3, P3L, BL. P2 is a waterfall pump so I can lose that if needed. Has anyone done this type of replacement before? 

Any help is much appreciated. 

PS Ive shown schematics of both boards

[CanadianSpaTech]

This Help?... https://www.spaparts.com.au/assets/brochures/ETKL8-3Atp.pdf 

17 hours ago, johnf said:

Has anyone done this type of replacement before? 

Most take the "opportunity" to replace the China with Balboa control systems 

[dinoedwards1965]

I got one for you! Have a 2013 Balboa with Spa Builders AP-1400. (2) 5hp pumps that sat for 5 yrs. I want to redo it all but they want over $1500 for parts.

I found a Sweet Water unit with (2) 3hp pumps and top side display for next to nothing.

Wondering if I could retro my spa with it.

I do know that if I go with only a new controller VS510sz have to change rotation of pumps so why not change it all with matching pumps to the controller. I know sensors won't work but really don't care not going to hook up heater.

[CanadianSpaTech]

1 hour ago, dinoedwards1965 said:

I got one for you!

Please start your own post and we will help you out. Include photos so we can see the white tag on the board that starts with 6600. Please delete above post

[johnf]

Hi does anyone know where the connections are on the KL8-3 control board for the temperature sensor (2 wire) and the heater flow switch (2 wire) also. Thanks 

[johnf]

On 7/11/2024 at 1:06 PM, CanadianSpaTech said:

This Help?... https://www.spaparts.com.au/assets/brochures/ETKL8-3Atp.pdf 

Most take the "opportunity" to replace the China with Balboa control systems 

Hi, the connections on the board are different to the Australian board, thanks anyway. Do you have any circuit diagrams relating to the KL8-3 boards. Any help much appreciated. 

Regards John