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austinlegro

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Everything posted by austinlegro

  1. Answered my own question. Stick it in high amperage mode, heater and blower both kick in, blower turns off at 7°C. Strange operating system...
  2. Perplexing question. With a freshly re-filled tub using 6° water the IC mode for my Balboa Spa pack is activated and the blower seems to run continuously. As DIP switch 10 is set to on, low amperage mode, no heater with blower running, the heater won't come on to heat the water and thus get rid of the IC mode. Is there a trick to this? high amperage mode?
  3. My apologies for what is going to be a long explanation. A while ago, my heater relay became intermittent and regularly failed to close but sometimes failed to open. I ordered new relays from China and with careful management was still able to use the tub. If the relay failed to close the tub just didn't heat up; if it failed to open the tub got hotter whether or not the pump was working or the heater light was on. One day I missed the relay being stuck closed, the water boiled in the heater and took out the element. Today my relay arrived and I replaced the defective one on the board and put the tub back together. When first switched on my tub goes through a blower cycle and then sits there heating the water. Often I cancel the blower cycle if I'm stood next to it. When I tried to do that today the topside panel didn't seem to be working. There was also a relay continuously operating on the board - which turned out to be the one for the light. The temperature buttons were inoperative but the temperature is displayed. I could get pump 1 & 2 to respond. After a while I decided that there must be an issue with the topside panel or its connection, possibly condensation etc, so I removed it and disassembled it but with no obvious defects found. That made no difference. I disconnected the topside panel from the board and switched on the tub; it went through its blower cycle and then happily sat there heating. I reconnected the topside panel whilst the tub was on and immediately the blower came on and off repeatedly in a similar fashion to how the light had. If I disconnected the topside panel just as the blower started it would remain running. If I disconnected it just as it was slowing it would stop. This led me to believe that the topside panel was definitely the problem and it had somehow developed an issue whilst the tub was broken and waiting for its relay. This is where it gets really weird... I disconnected the cable from the topside panel to check whether moisture / corrosion during the downtime had caused a short. I checked each conductor on the cable to ensure that there was continuity from the RJ45 plug at the PCB end to the plug at the topside panel end. All conductors had continuity and non were shorted. Whilst stood there with the cable in my hand I wondered if the action of plugging it into the board might be either making or breaking a circuit on the PCB and causing the problem. So, I plugged just the cable into the board whilst the tub was running and the blower started its on off on off routine. Assuming that the insertion of the cable into the socket on the PCB must have been altering a circuit somehow I tried the same thing with a normal RJ45 Cat5 cable but nothing happened. There were no topside panel issues before the heater relay failed. All I did was take the PCB out and replace the defective relay. All connections were marked on removal and have gone back as they were. My brain can't get past the bit where the tub RJ45 cable causes a problem and a Cat5 RJ45 cable doesn't. Can anyone shed any light on this as I'm absolutely stumped now?
  4. Symptoms have changed following further investigation. Sometimes, lowering the temperature setting thus cancelling the call for heat, and then raising it again will cause the heater to kick in. Only way to check is to look at my energy meter and see how many kW we're drawing.
  5. Hi, hope the hive mind can help. I have two heater issues that may be related. Catalina Spa, Balboa CAT105 control unit. First problem has only ever happened once. Heater stayed on despite no pump operating and no heater light illuminated. Water boiled in heater tube making popping noises had to turn on pump to calm things down but water continued to heat above set temperature. Shut down tub, reset and normality was restored. My limited knowledge makes me think that a relay was stuck shut despite no input from the flow sensor, thermostat or pump? The second issue is ongoing and is the opposite of the first. When the tub is turned on the heater brings the water up to the desired temperature and stops heating. When the temperature drops and the heater cuts back in the heater light comes on but the heater doesn't. If I kill the power to the tub and reset it it will usually come back on and heat normally, but sometimes it won't. Very occasionally lowering the set temperature (to cancel the heater demand) and raising it again (to induce the demand) will trigger the heater to start. No error code, clean filters and topside display of temp and heater status all normal. Basically, the heater tube seems to be doing its own thing despite the control panel saying otherwise. Again, my limited knowledge makes me think a relay is not closing that should. Is there a dodgy relay that could produce both of these issues? thanks
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