Hi,I just had the same thing happen on my 2011 EXL. I tried this and it worked! I think it might reset the climate control. Anyway, no new parts or tearing anything apart...
I got this same issue on my 2014 EX-L CR-V couple years ago right after warranty expired and I took it to a local mechanic who is aware of this coolant clogging issue and had flushed the heater core. This improved heat a bit but not to normal level. I wanted to run this self diagnosing steps, but I am little confused with above steps. I searched online for any other source, but didn't find any. If you can elaborate the above steps, I really appreciate. Thanks in advance.