Replacement Procedure; Proper Jumper Pin Configuration - Aqua-Hot 400 Series Service Manual

Replacement Procedure:

Failure to disconnect all power supplies and/or to allow the
heater to cool before servicing could cause serious damage
or personal injury.
1. Ensure that the Aqua-Hot has been completely shut
down and that all the power sources have been discon-
nected.
2. Remove the faceplate from the electronic controller by
removing the four screws securing it to the mounting
bracket.
3. Disconnect the positive, negative, and secondary power
(if applicable) wires from the electronic controller.
4. Disconnect the four terminal strips/plugs from the elec-
tronic controller by loosening the two screws, on each
strip/plug and pulling each strip/plug away from the
electronic controller.

Proper Jumper Pin Configuration:

1. Verify that the jumper pins are configured as in the illus-
tration. If the jumper pins do not match the illustration,
the Aqua-Hot 400 will not function properly.
2. If the jumper pins need to be reconfigured, simply tug
gently on the black cap covering the pins to pull the
black cap off.
3. Reseat the cap on the pins as per the illustration.
5. Remove the electronic controller from the mounting
bracket by unsnapping each corner.
6. Snap the replacement electronic controller into the
mounting bracket.
7. Ensure that the pin jumpers are properly configured for
an Aqua-Hot 400-LP. Reference information in the sec-
tion for proper pin-jumper configuration.
8. Install each terminal strip/plug back onto the electronic
controller and tighten the screw on the terminal strips/
plugs to secure them to the board.
9. Connect the ground wire followed by the main 12 Volt-
DC power wire, then the secondary power wire (if appli-
cable) to the appropriate screw terminal on the replace-
ment electronic controller board. Reference Appendix A
for additional wiring information.
10. Reinstall the faceplate onto the electronic controller
and secure with the four screws previously removed.
NOTE: Check the terminal strips/plugs for loose wires and
tighten if loose.
Figure 27
© Aqua-Hot® AHE-400-P01 Service Manual Rev.B June 2014
Section #: Title
Electronic Controller
p.
40