Hayward ProLogic - Troubleshooting: No Cell Power;Low Volts

18
No Cell Pwr.
/Low Volts
Is 24VAC
present?
YES
NO
Check 20A
fuse
Is fuse
damaged?
YES
Check Rectifier
wiring
1. No Cell Power/Low Volts
Verify 24VAC on
the transformer
output
Verify
transformer
input
Replace fuse
(GLX-F20A-
10PK)
NO
Is wiring
correct?
Replace main
board
(see pg. 17)
YES
NO
Correct
wiring
Is 120VAC available
on both
transformer
inputs?
NO
YES
Replace
Transformer
(GLX-XFMR)
120VAC present on
input power,
terminal block?
Test Main PCB
input power
NO
Resolve source
power issue
Replace main
board
(see pg. 17)
YES