I have a Bryant Evolution System with a Venmar Solo 2.0 connected with the NIM so that it can be controled by the Evolution T-Stat. The house is over ventilated and too dry (like 20%) even with a humidifier in the system. (Cold climate - MN)
There are 4 settings on the thermostat for the HRV, not counting OFF
High - runs continuously on high
Low runs continuously on low and switches to high for some periods of time, not sure why it does that...
Auto - seems to run continuously on high if it switches off or to low, I dont know after several hours running on high, the house is really dry low 20% and still continues on high
Dehum doesnt turn on the HRV (probably because the house is dry - but then we get no ventilation.)
Any ideas? Many times an HRV is controled based on humidity or time - 20 minutes on per hour etc. Not with this system.