Error Code - Rheem 64DV Troubleshooting Manual

34 | P a g e S V C 8 2 0 ( P ) P o c k e t M a n u a l

03 - Error Code

Only for manifold (multiple) unit installations: EZ-
Link; MIC-6; or MIC-185 manifold controllers.
Explanation: Communication failure between water heaters,
remote control, and/or manifold controller.
Diagnostic Checks:

DIP1 setting on main control board (PCB)
DIP1 SETTING:
Manifold units only: DIP1, switch #4 must be in the 'ON' position
(UP) for each unit.
Check ALL Molex connections on ALL control boards.
If 03 - Error Code is displayed after completing all checks:
Call Technical Support (800)-432-8373
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