Author Topic: Ecobee3 PEK adapter  (Read 1713 times)

Offline Sergroum

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Ecobee3 PEK adapter
« on: July 29, 2017, 09:13:19 AM »
Hello, hello.

I'll probably test it on monday, but figured I'll ask it here first. Has anyone ever used a PEK adapter that came from ecobee for some other thermostat that requires a common? Does it work for them?

Offline walker

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Re: Ecobee3 PEK adapter
« Reply #1 on: July 30, 2017, 06:59:31 AM »
I've never tried it, but its worth a shot

Offline Sergroum

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Re: Ecobee3 PEK adapter
« Reply #2 on: July 31, 2017, 11:46:45 AM »
So in case you wondered. It wont work. I didnt really lose much time figuring it out, but it seems PEK fails to send proper signal to the fan to turn it on. The tstat will work, but it basically uses the Fan wire for common wire and sends nothing to the Fan terminal.

I didnt really waste time to study this though. Kind of curious what does Ecobee do that's differet, but ... there you go.

Offline walker

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Re: Ecobee3 PEK adapter
« Reply #3 on: July 31, 2017, 07:13:46 PM »
Thanks for being the guinea pig on this one.  I won't waste my time ever trying this myself.  I keep a couple of fast stats on hand for these types of situations.

Offline Sergroum

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Re: Ecobee3 PEK adapter
« Reply #4 on: August 05, 2017, 07:35:29 PM »
Yeaaaah. But those cost money. While PEK adapters come with every ecobee3, whether you need it, or not. I've got 12 of them.