Replacement fan for the one that comes in Homedics AR-NC01GY Breathe

Thank you for the quick response Jayeff. The original was a 2 pin fan. Yes, I had tested for continuity when I first noticed that the fan wasn’t moving. It was all ok. It’s is a 4 fan system... when I turn it on, the remaining (original) fans spin, but the new fan I got jerks and doesn’t rotate.

@Calcasmy

If the original fan has continuity but doesn't operate and the new fan only tries to operate, check what the voltage is that is being applied to the fan. It may not be enough for the original fan and borderline for the new fan

Hello jayeff, thank you for your patience. I apologize for the confusion, the old fan worked just fine except the broken blade, I was talking about the new fan. The new fan would simply jerk and not run. I broke the fan trying to replace the blades from the new fan on to the old rotor. I have a new fan coming... I will check for Voltage and continuity before I start with anything. I will post back back if I have issues with the new fan.

Once again. Thank you very much

Also @jayeff, do you have any replacement fan suggestion, Appreciate you help.

@Calcasmy

Just search for one that has the exact same specifications including any power or current rating

By this I mean that you know the dimensions and the voltage already but if you work out the power rating or the current rating of the fan motor you will have it exactly.

It may be that the first replacement fan motor has too much resistance and therefore there may not be enough current available for it to keep rotating, but this is just a guess.

Since you have the original, use an Ohmmeter (meter function found in a DMM - Digital Multimeter) to measure the resistance of the fan motor. Once you know it then you can use Ohm's Law to work out the other values.

P=E²/R i.e. Power (P) in Watts (W) = Voltage (E) in Volts (V) squared, divided by the resistance (R) in Ohms (Ω)

or

I=E/R i.e. Current (I) in Amperes (A) = Voltage (E) in Volts (V) divided by the resistance (R) in Ohms (Ω)

You know that the voltage should be 24V

So search for a "120mm x 25mm 24V DC (insert power rating W or Current rating A) fan".

An EXAMPLE ONLY would be 120mm x 25mm 24V DC 5W (or 0.2A) fan. The resistance value for this example would be ~115Ω (Ohms) (115.2Ω to be exact but maybe your meter isn't that accurate). The current would be 0.208A or 208mA (milliAmps)