How much time are you giving your Alde to drive glycol around the various convectors? It can take a bit of time.
What temperature are you asking for on the control panel? The Alde thermostat is snug and warm behind the control panel, and can badly estimate the actual temperature in the cabin. Turn the temperature up. Get a separate thermometer and see if you need to adjust the "offset" for the thermostat. (In the Tools menu of the Alde.
You may need to do some Tab Yoga: but what is the circulation pump speed? Look over this discussion if this continues to be an issue.
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Ken / 2023 Tab 400 “La Bolita” (23,000+ miles) / 2024 Toyota Sequoia
2024 - 3 Trips - 35 nights - 9 National Parks, 3 National Forests