Navien Tankless Water Heaters 30027274B PCB Control Board GWC303-6M NPE-2
Specifications
- Type: PCB Control Board
- Model: GWC303-6M NPE-2
Loyalty ProgramStep 1: Turn off power and gas supply, unplug unit safely.
Step 2: Remove front cover carefully.
Step 3: Label and disconnect wiring harnesses from old board carefully.
Step 4: Install new board in same orientation and secure mounting screws firmly.
Step 5: Reconnect wiring exactly as labeled and check all connections for tightness.
Step 6: Restore power and test operation, checking for error codes or leaks.