AnthonyW
Well-Known Member
The heating system uses a resistance element in the coolant loop from engine to heater core. It is surprisingly fast to warm up and can use engine heat when it is available. A level 1 EVSE does not supply enough power to charge and precondition at the same time; you can do one or the other but not both at the same time. That requires a level 2 EVSE.
The best explanation of preconditioning climate control is a Honda doc that I think was posted by @jdonalds and @AnthonyW. My apologies if I got that wrong and slighted someone. Please mention if you were the poster and I missed you.
I have attached the file and it will clear up a lot of misconceptions. It explains that there is a range of outside and inside temps that must be met in order for the preconditioning to begin. If temps are not in the ranges then you will not get any preconditioning. This may explain some of the complaints some have posted.
Also, several have posted that it may have a delay of several minutes before it kicks in. So be patient.
Also see the very first attachment on the very first post of the thread below called AC system description.
Honda Service Express Bulletins for 2018 Clarity PHEV
https://www.insideevsforum.com/comm...Express-Bulletins-for-2018-Clarity-PHEV.2183/
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