Tony Rae

Hi there, I only joined this forum to say thank you to the above member (@Europa) for the walk through! I had been having real trouble trying to get my Wunda underfloor system with Salus ABA's to work. Having read through the above and a couple of other posts, I noted three main things which helped me get the issues sorted: 1. The instructions are wrong (as Europa points out) and the LED's flash rapidly for the first 2 mins in calibration mode 2. You need to do the valves one at a time instead of doing all of them (5 in my case) at once 3. You need to be v patient (which I was not) and not just give up when they initially open and close again within a minute or so I rigged up a simple light switch on the live lead of each actuator and this allowed me to switch them off and on again independently whilst leaving everything else powered on. Honestly, the key is patience as Europa has pointed out. For me, I would say it took 20 / 30 mins + per actuator for it to be calibrated settled and working as expected. Below is what I did to get everything working as it should: 1. Rig up switch on each actuator 2. Set all actuator switches to off (in my case, this left all actuators in the closed position) 3. Get the system to call for heat 4. Make sure your flow has a decent heat (Mine was at about 50 deg) 5. Switch on the first actuator (LED flashes) for about 20 seconds, then off, wait 2 seconds and then switch on again 6. As above, after 2 mins, actuator LED flashing will slow and it will open fully 7. After about a minute, actuator will close (Don't get annoyed at this point) 8. Go away, leave it well alone for 20+ mins 9. When you come back, you should see that there is flow on the circuit 10. Leave the now calibrated actuator on and run through steps 5 to 8 for each of the other actuators in turn, avoiding the temptation to do more than one at a time 11. Leave the system for a couple of hours and you should find that it is then sorted and the valves as opening and closing to moderate flow I was making two main mistakes: 1. Not waiting for long enough and when the valve does it's initial open then close, I was thinking it was not calibrated properly and doing the procedure again 2. By trying to do all circuits at once instead of one at a time, I think I was letting the manifold temp drop too much and therefore messing with the calibration. Thanks very much for your help folks and I hope the above is of some use. I'm off to lie on my nice warm garage floor...