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Hayward AquaRite Error PCB

Possible PCB fault (all four red/yellow LEDs on). Hayward says: call for service.

Your AquaRite is reporting a possible circuit board fault. Power-cycle once to confirm, then arrange service — don't repair the board yourself.

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Full answer & models

Hayward displays -Pcb- with all four red/yellow LEDs illuminated when a possible printed circuit board fault has been detected. The manual's instruction is to call for service — this is not a DIY board repair.

Applies to: AquaRiteAquaRite 900-series (see your manual)
Also searched as: -Pcb-, PCB fault, Printed Circuit Board fault, AquaRite PCB

Power off before opening the enclosure. Board repair is for service only.
Why
Shut off power to the AquaRite before opening the enclosure. Board-level repair and line-voltage measurements are for qualified service only.

What PCB means

Possible PCB fault (all four red/yellow LEDs on). Hayward says: call for service.

More detail
Per Hayward's AquaRite Operation and Installation manuals, '-Pcb-' displayed with all 4 red/yellow LEDs illuminated means a possible Printed Circuit Board fault has been detected. The documented action is: Call for service.

5-minute checks

Fix it step by step

Step 1 of 3

  1. Confirm -Pcb- and the LEDs

    • 2 min
    • None
    • DIY

    Match Hayward's description: -Pcb- on the display and all four red/yellow LEDs lit.

    More detail

    Confirm the display and LEDs.

    Other messages (HOT, COLD, salt display) are different faults. Only proceed as a PCB fault if the display and LED pattern match the manual.

    Did the code clear?

  2. Power-cycle once

    • 5 min
    • None
    • DIY

    Shut power off completely, wait a minute, restore power. If -Pcb- returns, call for service.

    More detail

    One controlled power cycle.

    A single clean power cycle rules out a brief glitch. Repeated cycling will not repair a board fault Hayward has already flagged.

    Did the code clear?

  3. Call for service

    • Decision
    • None
    • Pro decision

    Hayward's manual action for -Pcb- is call for service.

    More detail

    Call for service.

    Do not attempt DIY board component replacement. Arrange qualified service or warranty support for the control box.

    Still showing PCB?Still PCB → see the partNeed a pro → call a pro

Code cleared. Nice work.

Recheck chlorine in a week. Pros do the same.

Back to top

Fixed after any step? Recheck chlorine in a week. Still PCB after step 3? See the replacement part or call a pro.

Call a pro if…

  • -Pcb- returns after one clean power cycle.
  • You smell heat, see burn marks, or find moisture in the enclosure.
  • You are not qualified to work on line-voltage equipment.
  • Hayward's documented action for this display is to call for service.

Part you'll likely need

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If the steps above did not clear it, this is the part most people need.

AquaRite replacement control / PCB service (match your model and revision)

A confirmed PCB fault is a control electronics issue. Use a technician or authorized parts channel for your exact AquaRite revision — do not guess a board from a generic listing.

Fits: AquaRite (confirm model/revision)

Check it on Amazon

FAQ

Can I reset -Pcb- myself?

Try one full power cycle to confirm. If it returns, Hayward says call for service.

Is this the same as HOT?

No. HOT is a cell temperature reading. -Pcb- is a possible printed circuit board fault.

Should I keep running the pool?

Maintain chlorine with another method. Treat the salt system as out of service until repaired.

Where is this in the manual?

Hayward AquaRite manuals (including 092540 and 900-series 092623) list -Pcb- with all 4 red/yellow LEDs and 'Call for service.'

Source: Hayward AquaRite Operation Manual (e.g. 092540 Rev G) — display codes; -Pcb- = possible PCB fault, call for service. Written by a Florida pool service owner. Updated 2026-10-14.