Cold Cabin Temp

[Stovie]

I'm flying around Northern Europe in winter up at FL270 on longish sectors and the OAT is -46c. I have the cabin temp at max but it's dropped to 8c and I can't get it any warmer. Pax aren't impressed! Any ideas?

[glideslope]

Extreme temps requires bleed set to "HI" instead of auto, posted around a few times and mentioned in the manual. Important reading as using HI mode incur some limitations.

[MilitaryMav]

Turning off the A/C also helps. I find turning A/C off and bleed to HI at FL230, saves some time for the build back up to temp.

[Mad_X]

@MilitaryMav you only need the AC to cool the cabin down. It’s not meant to run all the time.

[Stovie]

Many thanks all, bleed to HI and AC on FAN sorted the problem. Pax all warm and cosy now.

[Stovie]

@glideslope Had a read through the POH and found the limitations. Thanks