Hayward ED2 - BD Bad Board or Secondary High Voltage Fault

Heater System Solving Guide
FAULT CODE THUMBNAILS – PAGE F 4
FAULT CODE THUMBNAILS – PAGE F 4
Heater System Solving Guide
Fault Code Thumbnails BD Bad Board or Secondary High Voltage Fault
FAULT CODE THUMBNAILS BD BAD BOARD OR SECONDARY HIGH VOLTAGE FAULT
UHS
IDL2
BD
BAD BOARD
OR
SECONDARY HIGH VOLTAGE FAULT
PARTS THAT MAY BE NEEDED
• Control Module / Ignition Board
• Extra Fuses
• Fuse Board
• Wiring Harness
• Transformer
DIAGNOSTIC SEQUENCE
A. Verify that FC4 fuse on fuse board is not open. Remove FC from fuse-
holder. Measure continuity across fuse. If OK, reinstall fuse and proceed
to step 2. If fuse is open, proceed to section titled “Open FC4 Fuse”.
B. Verify high voltage output from fuse board. Disconnect plug from P6
connector of fuse board. Measure for 120VAC across pins 3 and 5 of
P6 receptacle on fuse board. If OK, reconnect plug and proceed to step
3. If not OK, go to step 4.
C. Check for defective wiring harness. Disconnect plug from E10 connector
of contol module. Measure for 120VAC across pins 1 and 3 of plug on
wiring harness. If OK, replace control module. If not OK, replace wiring
harness.
D. Check for defective transformer. Disconnect plug from P4 connector of
fuse board. Measure for 120VAC between pins 4 and 6 of plug from
transformer. If OK, proceed to step 5. If not OK, replace transformer.
E. If the above steps have not resolved the error condition, the fuse board
is defective and must be replaced.
NOTE: Red letters above correspond with adjacent illustrations.