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🔌General Home Automation => Automating Your House => Troubleshooting Automation Problems => Topic started by: pnsoc513 on August 27, 2010, 10:09:47 AM

Title: Can't get ws13 to turn FAN off with remote
Post by: pnsoc513 on August 27, 2010, 10:09:47 AM

 I installed WS13 for controlling outside fan. I can turn fan on and off manually at the switch. I can turn fan on remotely using HR 12a remote but if I use remote to turn fan off it cycles off and then back on immediately. I used the neutral bundle in the 4 gang plastic switch box to attach to the ws13 neutral connection. Anyone have an idea of what is wrong?

Title: Re: Can't get ws13 to turn FAN off with remote
Post by: jgenter on August 27, 2010, 12:16:50 PM

I had a similar problem with my ceiling fan. I believe the back EMF from the fan motor is turning the switch back on. I solved the problem by putting a 22K ohm 1/2 watt resistor across (in parallel with ) the motor leads as suggested by someone here.
Jack
 :)

Title: Re: Can't get ws13 to turn FAN off with remote
Post by: Brian H on August 27, 2010, 06:25:31 PM

If you used a 22K 1/2 watt. You may want to see if it is getting real hot.
At 120 volts a 22K resistor is dissipating .65 watts.

Title: Re: Can't get ws13 to turn FAN off with remote
Post by: jgenter on August 27, 2010, 08:58:01 PM

Good call!

I actually measured the resistance of the 22K ohm coded resistor at 34k ohms...Chinese I guess ;D

After the fan was running for an hour or so I measured the resistor temp with a thermocouple at 84 degrees F.

I tried several values of resistor higher to lower to determine that this one did indeed keep the switch from turning back on.

Title: Re: Can't get ws13 to turn FAN off with remote
Post by: Brian H on August 28, 2010, 06:08:22 AM

Well 34K is about .42 watt so it is below the .5 watt rating.