Section 12: Control Board
Replacement Procedure
Adjusting Manifold Pressure on NEW
Control Board
NOTE: This adjustment to be performed on NEW control board.
Adjustment of “MEDIUM” Manifold Pressure Setting on
NEW Control Board
1. The setting value will display on the remote
control.
2. Locate DIP1 on control board. Move DIP switch
#1 to ON position.
3. Push MAX button then MIN button within 2
seconds and hold down for more than 5
seconds. Remote control will display a “P.”
Release both buttons.
4. Push and hold ADJ button. Setting number will
display on remote control (NOTE: You have 20
seconds to read this value).
5. While holding ADJ button, push MIN button to
make the setting go DOWN or press the MAX
button to make the setting to UP.
6. Continue until number displayed matches value
recorded during the “VERIFY ‘MEDIUM’
MANIFOLD PRESSURE SETTING” step.
7. Follow remaining procedures to return tankless
water heater to normal operation.
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