Heater display is dim, flickering, or hard to read.

Safety first: Turn off power before removing the display bezel.

• Check voltage: Measure low-voltage supply at the Nirvana display module connector. If low, inspect the transformer and control board regulators.
• Reseat connector: Disconnect and reconnect the display harness to ensure a solid connection.
• Inspect for damage: Look for signs of moisture or corrosion on the display PCB.
• Replace display: If voltage is correct but the display remains dim or flickers, replace the display/keypad assembly with an OEM Nirvana part.