Oceanic Chiller Adjustments Notes

[ChipD]

I have two Oceanic 1 HP chillers. After some recent struggles locating this information, once I figured it out - thought I would share and document.

Calibration of Temperature Sensor - Once powered on, hold Up and Down for about 5 to 8 seconds. Display will change to H (x) where x is a number between -5 and 5. Press Up or Down to adjust to the value you wish, then press Set to save.

This value is the adjustment positive or negative from the "sensed" value. While generally it appears to be close to 0, a recent circuit board issue changed the value on my unit. On replacement of the circuit board, mine was at 5 (+5) sensing that the water was 5 degrees higher than reality. This was confirmed by several other thermometers on water returns from the sump (two different pumps) and several locations in the tank.

Differential Adjustment - This is the degrees spread for on / off of the settings. Default is 3, range is 2 to 4. I prefer 2, so set it at two. To adjust - while powered on, press and hold Set for 5 to 8 seconds. Display will change to d(x) where x is 2 to 4. Press Up or Down to modify, and when your new value is displayed, press Set to save.

Temperature Setting - While powered on, the unit will display the current "sensed" temperature. Press Up or Down and the display will flash with current setting. Press Up or Down to reach the desired "Low" setting, and press Set to save. If you set 76 F, and have a 2 degree Differential (see above), I've seen reference that it's about a 1/2 degree above the differential which starts the unit. So at 78.5, the chiller would start and continue to run until it again reaches 76.

Note - I'm not an engineer, so these are just my observations and information I had to struggle to locate. Setting temp was in manual, I don't remember seeing differential, but I could only locate one other reference to the calibration on any forums, but it didn't share the procedure.

Observations on issue - After about 18 months in operation, one of my chillers showed a high temp on display. I powered off and inspected all electrical connections, removed wiring harness to control and bus area, checked capacitor for any leaks or damage. I did notice some buildup on the control panel, which working on PC's and other electronics, did carefully clean the circuit boards to no avail. Unit would initially power up, but display would begin to dim and flash as if losing power. I obtained a replacement control board (note harness does NOT come with, so be prepared) and reinstalled.

Other note - I did reduce the temp slowly over a day or two since it had climbed a bit. So far, so good.

Hope this helps someone else!
Chip

[ChipD]

One other side note I forgot to include... While I was able to obtain a replacement control unit, I examined it on arrival. The circuit boards have some really poor soldering and flux residue on the boards. The replacement was the same production date stamp, so I'm not surprised at failure in this environment.

[LearningDaily]

Originally Posted by ChipD

I have two Oceanic 1 HP chillers. After some recent struggles locating this information, once I figured it out - thought I would share and document.

Calibration of Temperature Sensor - Once powered on, hold Up and Down for about 5 to 8 seconds. Display will change to H (x) where x is a number between -5 and 5. Press Up or Down to adjust to the value you wish, then press Set to save.

This value is the adjustment positive or negative from the "sensed" value. While generally it appears to be close to 0, a recent circuit board issue changed the value on my unit. On replacement of the circuit board, mine was at 5 (+5) sensing that the water was 5 degrees higher than reality. This was confirmed by several other thermometers on water returns from the sump (two different pumps) and several locations in the tank.

Differential Adjustment - This is the degrees spread for on / off of the settings. Default is 3, range is 2 to 4. I prefer 2, so set it at two. To adjust - while powered on, press and hold Set for 5 to 8 seconds. Display will change to d(x) where x is 2 to 4. Press Up or Down to modify, and when your new value is displayed, press Set to save.

Temperature Setting - While powered on, the unit will display the current "sensed" temperature. Press Up or Down and the display will flash with current setting. Press Up or Down to reach the desired "Low" setting, and press Set to save. If you set 76 F, and have a 2 degree Differential (see above), I've seen reference that it's about a 1/2 degree above the differential which starts the unit. So at 78.5, the chiller would start and continue to run until it again reaches 76.

Note - I'm not an engineer, so these are just my observations and information I had to struggle to locate. Setting temp was in manual, I don't remember seeing differential, but I could only locate one other reference to the calibration on any forums, but it didn't share the procedure.

Observations on issue - After about 18 months in operation, one of my chillers showed a high temp on display. I powered off and inspected all electrical connections, removed wiring harness to control and bus area, checked capacitor for any leaks or damage. I did notice some buildup on the control panel, which working on PC's and other electronics, did carefully clean the circuit boards to no avail. Unit would initially power up, but display would begin to dim and flash as if losing power. I obtained a replacement control board (note harness does NOT come with, so be prepared) and reinstalled.

Other note - I did reduce the temp slowly over a day or two since it had climbed a bit. So far, so good.

Hope this helps someone else!
Chip

Looking all over for this to calibrate the unit temperature. Thanks!!!