Troubleshooting by Indication on the Remote Controller
360
High pressure
Low pressure
Frequency
Heating
The outdoor unit electronic expansion valve
is closed due to the overload control.
Frequency comes to
the minimum level.
(
High pressure
is maintained
at a constant level.)
Low pressure
rises
due to
decreased
frequency.
To maintain
high pressure
,
frequency
decreases
under the
capacity control.
High pressure
drops or rises
immediately after the overload
control is complete.
Low pressure
drops due to
closed outdoor unit
electronic expansion valve.
Hot gas bypass is activated
for
low pressure
protection,
i.e., hunting at
low pressure
.
Higher degree of overcharge
(Degree of overcharge)
Proper amount
