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502
6-1. Using the air conditioning system and defogger
■
Heating
●
In HV mode, the gasoline engine may operate in order to extract heat from
the engine coolant via the heater.
●
In EV mode, heating is done by a heat pump system.
• When the outside temperature is low or it is snowing, compared to con-
ventional vehicles, heating may be less effective and warm air may not
come out.
• When the outside heat exchanger is
frosted over, fan speed declines and it
may become harder to heat the inte-
rior. However, it is not a malfunction.
In this situation, the air temperature
from the outlets may not change even
though the set temperature is raised.
• If frost has formed on the outside heat exchanger, the heating perfor-
mance will decline. The frost can be removed from the outside heat
exchanger by operating the Remote Air Conditioning System before driv-
ing (P. 518). When frosted over, the heating operation of the Remote
Air Conditioning System starts after defrosting.
• When
the set heating performance may not be achieved even if the fan speed
setting is increased.
●
In the following situations the gasoline engine may operate in order to
extract heat from the engine coolant via the heater even in EV mode.
• The outside temperature is approximately 14°F (-10°C) or low
•
is operating
■
Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and
the ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after
■
Water droplets during air conditioning operation
The outside heat exchanger, accumulator
and air conditioning piping may incur con-
densation or frost may form. During or
after the air conditioning operation, water
droplets may fall from the vehicle. How-
ever, it is not a malfunction.
PRIUS PRIME_OM_OM47D13U_(U)
is turned on, the heating is controlled optimally. Therefore,
is pressed.
Outside heat exchanger
Accumulator
Outside heat exchanger
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