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This guide will help you replace a broken or damaged internal fan within your Insignia NS-HTMC01-B ceramic heater. A broken or damaged fan can cause your heater to put out lower amounts of heat, or no heat at all.
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Flip your device over so the back panel faces you. You should see a hole containing a screw in each corner of the device.
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Insert a 4-inch Phillips #1 screwdriver into each hole until connected with the 20 millimeter, sharp-point screw.
 
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Rotate the screwdriver counter-clockwise until screws are removed.
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Remove the back panel.
 
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Unscrew the four 9 millimeter, sharp-point screws holding the fan in place.
 
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   crwdns2935267:0crwdne2935267:0Tweezers$4.99
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Use tweezers to disconnect the red and black wires.
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Remove the fan.
 
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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But what is the fan size?