jeditekunum
Active Member
Thought I would share what I have learned. This data is from a Broan ERV140TE. I suspect a Broan HRV150TE has the same controls. It appears these may be the same as Venmar E15 ECM ERV and HRV and likely similar vanEE products. They are all the latest generation ventilators with energy-efficient ECM motors.
Remote control consists of 4 wires labeled B, G, R, Y.
B is ground.
Y is +12VDC.
G is control.
R is unknown at this time.
Control is via a resistance between G and B terminals. I've tested with a variety of resistor values:
4K: high
12K: high
18K: off
22K: off
33K: low
43K: low
51K: low
68K: low
80K: low
90K: off
In other words, anything between 33K-80K is low, less than 12K is high.
It appears that the "protocol" (resistance values) are not consistent from generation to generation or brand to brand for that matter. Another post in this forum years ago had very different results. This ventilator does not work with a Carrier Infinity system NIM so the ventilators from Carrier (also made by Venmar) are either different generation or are intentionally different for "proprietary" purposes.
Remote control consists of 4 wires labeled B, G, R, Y.
B is ground.
Y is +12VDC.
G is control.
R is unknown at this time.
Control is via a resistance between G and B terminals. I've tested with a variety of resistor values:
4K: high
12K: high
18K: off
22K: off
33K: low
43K: low
51K: low
68K: low
80K: low
90K: off
In other words, anything between 33K-80K is low, less than 12K is high.
It appears that the "protocol" (resistance values) are not consistent from generation to generation or brand to brand for that matter. Another post in this forum years ago had very different results. This ventilator does not work with a Carrier Infinity system NIM so the ventilators from Carrier (also made by Venmar) are either different generation or are intentionally different for "proprietary" purposes.