Hayward HydroRite UVO3 Troubleshooting Manual page 33
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Also See for HydroRite UVO3:
- Owner's manual (16 pages) ,
- Troubleshooting manual (41 pages)
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2. Display Not Lit
The display board requires 5VDC from the main board (green) in order to function
properly. IF 5VDC is present but the display is not illuminated then the display will
need to be replaced.
Verify Display Power
Display Output (interconnect)
Step 2A
Step 2B
Verify that 5VDC is present between bottom right most
On the interconnect board, unplug J16 & test for 192-
pins. IF NO/LOW voltage is present, proceed to step 2B.
288VAC between 1 & 2 (top to bottom). IF voltage is
IF correct, replace the display (HYXSDIAS).
correct, go to 2C. IF NO/LOW, proceed to 2E.
33
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