Recent content by hutchR

First, they replaced the heat pump control module since there were multiple "communication error" codes and that's what a TSB suggested they fix first since it was the least expensive part, but that didn't work. They then determined the AC compressor was the problem which ultimately fixed it...

I was thinking the same thing.

Update. Nissan dealer showed a variety of error codes (b2631, b2777, b277b, b27c0, b27c1) that all said 'communication error' with various HVAC parts. They feel that the heat pump control unit is the problem.

I did a little reading up on this issue with the gen 1 Leafs. I checked the climate control energy usage on the touchscreen and with the heat at max, it showed zero energy usage. I would check the PTC voltage, however, if nothing is working and not drawing any power whatsoever, I feel confident...

New battery installed, problem still persists.

I did check the resting battery voltage this morning and it was 11.7volts, so its time to replace it. I'll grab a new battery today and see if that fixes the problem.

The air was cold like the outside air.

It was about -1C this morning. I did check the battery as I realize its 5yrs old now, but it was still showing 12v.

I tried searching for solutions to these issues, but came up empty handed. My 18 SV sat in the driveway for a week, fully charged before I went out this morning. After driving for about 20mins I had no heat, just cold air. Normally when it's cold out, I can hear the heat pump kick on, but not...