Safety first: Disconnect power and wait for the fan to stop completely before working near it.

Step 1 – Access fan: Remove the access panel to reach the Monument combustion fan.
Step 2 – Tighten hardware: Check and tighten all fan mounting screws and brackets.
Step 3 – Inspect blades: Remove any debris and gently straighten slightly bent blades.
Step 4 – Test run: Reassemble enough to run the grill and listen. If rattling persists and the fan wobbles, replace the fan motor assembly.

Rattling or vibrating noise from fan area

Possible Causes