Hayward ProLogic - Troubleshooting: Blank Display;No LEDs

21
Blank Display/
NO LEDs
2. Blank Display/No LEDs
Power OFF &
verify display
connections
Local display cable
free of damage?
Contact tech
support for
replacement
(908)355.7995
YES
NO
Remove
terminal blocks
and power cycle
Is Display
normal?
Problem is in
terminal block
or comm
equipment.
Isolate
equipment to
find root cause
YES
NO
YES
System has a
2amp,
integrated fuse?
Fuse has
continuity?
Test 3amp
(violet) fuse
Fuse has
continuity?
YES
NO
Replace main
board
(see pg. 17)
Replace fuse
(GLX-F3A-10PK)
Test incoming
power
Is 120VAC
present?
NO
NO
YES
NO
Resolve source
power issue
YES
Local display
power is
11VDC?
NO
Replace Main
Board:
(see pg. 17)
Replace Local
Display:
(see pg. 17)
YES