Chiller Question

Discussion in 'General Reef Topics' started by Fish Fan, Jun 24, 2009.

  1. Fish Fan

    Fish Fan Fire Worm

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    I bought a used Current 1/3 hp chiller from a lfs store that was closing its brick and mortar location. The unit looks brand new still has the plastic on the control panel. Here is my question, the chiller will run for around 5 or 10 min and then shut off for about 5 minutes and then run again for around 5 or 10 min, so on and so on, is this normal for a chiller or did I buy a bunk unit?

    Any suggestions will be greatly appreciated
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  3. jonjonwells

    jonjonwells Great Blue Whale

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    Does it do it 24/7 or just during the day?
  4. Fish Fan

    Fish Fan Fire Worm

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    I just set it up today and it started doing it right away.
  5. jonjonwells

    jonjonwells Great Blue Whale

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    If your system was fairly close to the set temp when you started then I would say it could be alright, however....

    If you have several degrees to go down and it is still on again off again, then you have an issue to hunt down.


    Do you run MHs?

    Check and see how it runs after lights out. There should be very little action out of a chiller at night.
  6. Fish Fan

    Fish Fan Fire Worm

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    I was trying to drop the temp about 3 degrees and all that was happening was the on and off cycles.

    I do not run MH, I have PC's.
  7. jonjonwells

    jonjonwells Great Blue Whale

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    Hmm, doesn't sound right. Try contacting the manufacturer and see what they have to say about it.

    Would the store you bought it from refund if it ends up being defective?
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  9. Fish Fan

    Fish Fan Fire Worm

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    I will try to contact the manufacturer and see what they say.
  10. Tangster

    Tangster 3reef Sponsor

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    It maybe short cycling out on high head pressure if you are pulling hot air across the coils ? or the controller needs to be set for say 79F and a 2 Deg. Differential setting ? and I think that controllers has a auto set on the cycle limit that you can change to keep it off on Delay if it starts to short cycle and how much water are you pumping through the chiller ?
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  11. Fish Fan

    Fish Fan Fire Worm

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    I am running a Mag 7 to the chiller. Is that too much flow? How would I make the adjustments that you are talking about Tangster?
  12. Otty

    Otty Giant Squid

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    You need to check the mfg on gph flow, but I bet that a 700gph pump is way too much flow for your chiller. The water needs to stay next to the coil longer to bring the water down.
  13. Tangster

    Tangster 3reef Sponsor

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    Aside from the flow rates how do you have the controller set up to operate ? There is a differential setting and a I think also a setting to control and limit the time off to allow the compressor gas to equalize on the head pressure before it is allowed to restart a time delay if you will .. As Otty said you have to move the water through slow enough to allow the heat exchanger to gather up the heat molecules , Thats is where the problem comes in with cycling the hot air back across the condenser coil

    When you go through the set up on the controller what LED characters do you see ? DIFF and or ASd or TOFF ? Looks like greek but it means different things to program in .

    Here is how the controller is set up and programmed

    Prime Chiller Temperature Controller
    The electronic temperature controller is designed to provide on/off control of cooling. It is equipped with an easy to read Liquid Crystal Display (LCD) that displays a constant readout of actual temperature, control settings, relay status and system diagnostics. The simple keypad allows programming of set point temperature and temperature differential.
    Displaying current temperature and previous setting
    1. Press the SET button. The indicator light will appear and the display will automatically show the previous set temperature.
    2. Press the SET button again, the indicator light will turn off and the current water temperature will be displayed.
    Changing the temperature setting
    1. Press the SET button for three (3) seconds. The previous set temperature will be displayed.
    2. Press Up "<" button to increase temperature or press Down ">"button to decrease temperature. The temperature must be set between 60-85 degrees F.
    3. Confirm set temperature by pressing SET button again or waiting for 8 seconds. The current aquarium temperature will then be displayed when chiller begins to operate in normal mode.
    Please Note: The chiller has a built-in protection mode that can delay the cooling mode operation for up to three (3) minutes.
    temperature differential
    The temperature differential is automatically set to two (2) degrees F as an default.
    trouble shooting
    P1 Error - Indicates sensor needs replaced or that water has come in contact with controller. Unplug unit and allow it to try completely before re-starting up. If P1 error continues, contact your dealer for a replacement temperature sensor.
    Temperature Error - if the digital display reads an unusual temperature reading (like 122 F), it indicated a temperature sensor malfunction.

    Temperature Controller
    specifications/Installation and set up
    WWW.CURRENT-USA.COM
    Last edited: Jun 25, 2009
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  15. Fish Fan

    Fish Fan Fire Worm

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    Thanks to the both of you for the information. I am going to change the pump to one that has about half of the output and see if that helps and also make sure that there is room behind the chiller for the warm air to disipate.
  16. Tangster

    Tangster 3reef Sponsor

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    See that you have the controller programed correctly
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  17. Fish Fan

    Fish Fan Fire Worm

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    For some reason I can not get the onboard controller to enter the program mode. Would a bad controller cause the short cycling? How much is a new controller for that chiller?:confused:
  18. Tangster

    Tangster 3reef Sponsor

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    Yes it could and would cause the short cycling and that will blow a compressor up in no time and or blow a coil . Make sure you are getting into set up program mode for sure then try it if not P/M me there are better and easier options around then replacing the one in the unit
  19. Fish Fan

    Fish Fan Fire Worm

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    I am giving up on this POS chiller. The person that I bought it from thinks that it runs just fine so she is willing to take it back and give me my money back. I guess I will just have to save up and buy a brand new unit so that I dont have to deal with anyone elses problems.

    Thanks again to Tangster, Otty and jonjonwells for your assistance and guidance.