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  1. A

    UFH pump not turning on

    Hi all, I've noticed that my UFH pump is not always turning on as soon as the stat & valve calls for heat. This results in hot water passing through the underfloor pipes but without being pumped, which means it takes forever for the room to heat. From testing with a multimeter I see that it's...
  2. C

    Apartment complex lights not working or pool pump system. Novice maintenance man

    Apartment complex lights not working or pool pump system. Novice maintenance man with very little experience in electrical, and my job is on the line
  3. R

    Pump wired in 2.5mm on a shower circuit 10mm on Type B 40 acceptable ?

    Good evening all, I’m currently part way through my apprenticeship and we are working on IB, IN, IZ and IT and volt drop today. And it got me thinking I have seen a circumstance at work, where: A shower has been wired in 10mm T+E on a 40A breaker. But then from the shower isolator switch a 2.5mm...
  4. D

    FCU to pond pump

    Hi all, Thank you in advance... So I had an electrician put in some FCUs on spurs to a couple of outside lights.. this one was in readiness to feed a pond pump. I'm very reluctant to question the experts, but I wanted to put an LED FCU on, and found this.. I really don't think it can be...
  5. T

    House water pump keeps needing a reset

    Hi. I have a single phase water pump which supplies our house. It frequently cuts out and needs to be reset (on pump itself). Because of our location (rural Spain) I suspect it is erratic voltage supply. Is there a power regulator I can use in between pump & outlet to overcome this?
  6. D

    Replace wire or breaker on septic pump?

    After 24 years my septic lift station pump and high water alarm needs to be replaced. It was tripping the breaker and the alarm was no longer working. When I pulled the wires out of the alarm, which serves as a junction box for the pump, pump float switch, and alarm float switch everything was...
  7. P

    Why is my new high temp zone valve addition shutting off the low temp pump?

    For the past few years, I have used a hydronic system (outdoor wood boiler) with both high and low temp working simultaneously. The low temp system is controlled by TEKMAR mixing control #356 variable speed. I recently added 2 thermostats and 2 zone valves (Honeywell 8043F) to the high temp...
  8. Furamuki

    How can i start a different pump at each start ?

    So I have 2 pumps, when i turn a selector on i want to start the first pump. Once the selector was turned off and on again, I want to start the second pump. And any time i repeat it i have to turn on the other pump which was not running on the previous startup. How can i do this whitout a PLC ?
  9. A

    1 phase 2 pole 400v pump wiring

    Hello. How i should connect this 1 phase 2 pole 400v cooling pump? If i apply 1phase 230v and neutral it Will only growl and "spin" very very slowly. Thank you for help.
  10. C

    12v Pump Installation Issue

    Hi, I have very little electrical experience and would like a bit of advice. I have a kerosene pump installed in the back of my van. According to the manual, it draws 44a. It's powered by a leisure battery (split charge relay). The issue is, the pump is meant to have a 80L/min flow rate, but...
  11. S

    Air Source pump tripping RCD

    Keeping this brief.....................New dwelling.....TT system with 100mA S type rcd protected supply to local board with 30mA RCD. Freelance "engineer" to commission Heat-Pump, as original company disappeared before installation. ASHP worked for a while then tripped the 100mA RCD not the...
  12. N

    Well Pump Control Circuit Troubleshooting

    I have a 4-wire well pump (red, yellow, black, and green) which just quit. Cycling normally, then shut off and never came back on. I've gathered that yellow is the common, red is the leg for the start winding and black is the run winding. I've got a couple ohms (4-ish on my trusty Harbor...
  13. L

    Submersible well pump wiring

    Our old three wire pump quit working. We wanted to replace it with a two wire. It was our understanding the pump would actually have three wires: hot, hot & ground. The pump actually has one hot wire, oen neutral wire and one ground. How in the world can this pump be wired to the pressure...
  14. N

    Soft Starters for Single Phase Submersible Pump

    Hi Everyone, Has anyone ever encountered an undersized start capacitor (from manufacture) for a single phase pump??? I would like to integrate some sort of soft starter for my submersible pump which pumps rain water to a tank. Is this possible??.... Thanks, NKC
  15. E

    Continously running pump

    Friend asked me to wire in a hive on a conventional 1 zone heating system. So I fitted it tested the HIVE and all was working. I then said to him after about 20 minutes your pump is still running even though water and heat were turned off. Response it's always been like it. So me been fussy...
  16. B

    Fishpond pump management

    Hi, I’m trying to find a frost stat that will facilitate the switch off of mains power 230VAC to both a fish pond pump & UV clarifier (combined <2 amps) when outside temperatures drop below 1 deg C or similar. To prevent hysteresis the power supply should not be reapplied until the temperature...
  17. sythai

    UFH pump help please.... ??

    Hi Guys Just seeing if anyone can help please. Does this pump come with plug in type/ pre flexed feed (hopefully that makes sense!) as cant see how to get inside to wire it up ? Where its located have zero room and struggling to get in and see properly (thanks plumbers !) Cheers Sy
  18. Poolworx

    Pool pump motor humming

    Hi all Back in July last year I installed a new pool pump/motor. The problem is it's now making a humming noise and trips the breaker. I initially thought it was the capacitor, but opened up the back to find there is no capacitor. Didi a little research and thought maybe it was a shaded pole...
  19. F

    Heating system is via an air source heat pump.

    We have just completed a self build, and heating system is Air Source Heat Pump, unvented HW cylinder, Buffet Tank, all Vaillant equipment. The heating firm have ceased trading before the system has been completed and fully commissioned. Ground floor is UFH with 6 zones controlled by Heatmiser...


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