Hefner413 Posted March 6, 2022 Report Share Posted March 6, 2022 I have the balboa bp1500 board for my spa. I came here trying to find out which relay to replace... My issue is that the Low flow started intermittently working and now doesn't at all. Voltmeter test at the pump reads no voltage when the pump should be running, so I'm thinking relay. When I press the Jet button, the 'jet' diode turns on but nothing happens… I can hear and feel a click on the board but the pump doesn’t turn on. I think the click may be the K2 relay but I can’t say for certain. If I press the jet button again, the high flow pump turns on fine. I have checked all fuses. Thanks for any advice! This is the balboa board: Balboa BP1500 Quote Link to comment Share on other sites More sharing options...
CanadianSpaTech Posted March 6, 2022 Report Share Posted March 6, 2022 Thanks for starting your own post. Disconnect the pump from the board and test at the board. I normally have my electronics guy replace all the relays and freshen up the entire board if you have to go that route Quote Link to comment Share on other sites More sharing options...
Hefner413 Posted March 6, 2022 Author Report Share Posted March 6, 2022 13 minutes ago, CanadianSpaTech said: Thanks for starting your own post. Disconnect the pump from the board and test at the board. I normally have my electronics guy replace all the relays and freshen up the entire board if you have to go that route Good idea. So I disconnected the pump and checked voltage. I would get a slight bump in voltage at the board when switched on, but not much. I went ahead and tapped the relay (K2) a couple times and it kicked the pump on. A couple more taps on K2 and it turned back off/on. So it seems like K2 is my issue... 1 Quote Link to comment Share on other sites More sharing options...
cranbiz Posted March 7, 2022 Report Share Posted March 7, 2022 The contacts on the relay have arced over. Build up of carbon is normal on relays that switch higher currents. They are not difficult to replace if you have some electronics experience and the relays are not really expensive and available thru Amazon and electronic supply outlets like Mouser, etc. 1 Quote Link to comment Share on other sites More sharing options...
Hefner413 Posted March 9, 2022 Author Report Share Posted March 9, 2022 On 3/7/2022 at 10:13 AM, cranbiz said: The contacts on the relay have arced over. Build up of carbon is normal on relays that switch higher currents. They are not difficult to replace if you have some electronics experience and the relays are not really expensive and available thru Amazon and electronic supply outlets like Mouser, etc. Thanks and yep, I bought a 5 pack of the AZ762-1A-12DE relays (K2 Position) on amazon for $15. Removing the relay was a little trickier than I expected.. to pull the solder out of the board, it took a bit of work. First time I've done this and my soldering gun and desoldering pump are cheap. I ended up taking the relay apart and removing the relay pegs 2x at a time. Since there are six, it came off in 3x parts. I'm sure it wasn't the formal way to do it, but it worked. The board is back on the spa and the low flow pump is working great now. It's a shame that people replace the entire board for hundreds of $ when the relay is so cheap. But hopefully these threads help someone else save some $ as they have for me. Thanks all! 2 Quote Link to comment Share on other sites More sharing options...
cranbiz Posted March 10, 2022 Report Share Posted March 10, 2022 Excellent. Good job and thank you for following up here. 1 Quote Link to comment Share on other sites More sharing options...
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