Description
Zodiac Tri power supply board set W082981
The Zodiac Tri power supply board set W082981 is the original main power electronics assembly for Zodiac Tri and Tri Expert salt chlorinators and
selected Hydroxinator systems. Supplied complete with aluminium support and cooling fan, it restores stable low voltage power delivery to the cell
and control electronics when the original board is damaged or worn.
Main features of the Zodiac power supply board set
- Original Zodiac power supply printed circuit board assembly for Tri series chlorinators.
- Delivered as a complete module with aluminium mounting bracket and integrated cooling fan.
- Designed to provide stable low voltage power to the salt cell and internal electronics.
- Factory configured for use in residential pool salt electrolysis systems.
- Direct mechanical and electrical replacement for the original board in compatible models.
Compatibility and typical applications
The Zodiac Tri power supply board set W082981 is used across several salt chlorination platforms that share the same power section. It appears in
the official exploded views as the power electronic board with aluminium support and fan.
- Zodiac Tri salt chlorinators.
- Zodiac Tri Expert and Tri Expert ls models.
- Hydroxinator systems for mineral pools and selected Hydroxinator iq versions that list W082981.
- Tri xo units and related Tri series variants in some markets where the same board is specified.
Always confirm the reference W082981 in the spare parts documentation for your exact model before ordering, as later versions may use a different
power supply board reference.
Technical details
- Brand: Zodiac.
- Product type: Main power supply printed circuit board assembly.
- Manufacturer reference: W082981.
- Assembly: Electronic power board on aluminium support with axial cooling fan.
- Function: Converts mains power to regulated low voltage for the cell and control electronics.
- Cooling: Integrated fan for forced air cooling of power components on the board.
- Installation location: Inside the chlorinator control unit behind the front cover.
When to replace the Zodiac W082981 power board
The power board works continuously whenever the chlorinator operates and is exposed to heat, humidity and electrical load. Over time this can lead to
component fatigue or failure. Typical symptoms indicating that the W082981 assembly may need replacement include:
- The chlorinator does not power up even though the mains supply and fuse are correct.
- Recurrent power or cell error messages not resolved by replacing the cell or checking cabling.
- Visible burning, swelling or discolouration on components of the existing board.
- The internal fan has failed and components overheat or the unit shuts down intermittently.
If these issues persist after basic checks of supply voltage, wiring and fuses, fitting a new original Zodiac W082981 power supply board can restore
stable operation.
Installation guidelines
Replacing the power supply board involves working inside the chlorinator control box. If you are not comfortable working with electrical equipment,
this task should be performed by a qualified technician. Always work with the power disconnected and follow local safety regulations.
- Disconnect the chlorinator from the mains supply and verify that there is no voltage present.
- Remove the front cover of the control unit to access the internal electronics.
- Take clear photos of all connectors and wiring on the existing W082981 board for reference.
- Unplug the cell power leads, sensor cables and any other connectors from the old board.
- Unscrew the aluminium support from the chassis and carefully remove the complete old assembly.
- Position the new Zodiac Tri power supply board set W082981 in the same location and fix it using the original screws.
- Reconnect all cables and connectors one by one according to your photos and the manufacturer diagram.
- Confirm that the cooling fan is free to rotate and that no cables obstruct airflow.
After reassembly, close the housing, restore power and check that the chlorinator starts correctly, the fan runs and that no new error messages appear.
Monitor the unit during the first operating hours to confirm stable performance.
Good practice to protect the new power board
Once the new W082981 board is installed, a few simple measures can help to extend its service life and reduce the risk of future failures.
- Ensure that the technical room is dry and well ventilated to limit condensation and overheating.
- Keep chemical containers closed and away from the control unit to avoid corrosive vapours.
- Check periodically that the fan is running smoothly and that air inlets and outlets are not obstructed.
- Verify that the salt concentration and cell output settings follow Zodiac recommendations to avoid excessive electrical load.
With correct installation and basic preventive care, the Zodiac Tri power supply board set W082981 can provide many seasons of reliable service in Tri,
Tri Expert and compatible Hydroxinator salt chlorination systems.
