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e Terra Ductless split heat pumps are a single zone
unit available in size from 9000 btuh to 24, 000 btuh
providing heating and cooling. All comfort settings
are controlled by a remote control. e Terra unit has
many features to enhance comfort and e ciency. e
operation of these features will be explained later in
this service manual.
Superior inverter technology is used to control capac-
ity while maintaining maximum e ciency. e Terra
systems are equipped with G10 inverter technology
providing precise control over the compressor frequen-
cy based on operating pressures and temperatures.
Should an abnormal condition occur, the so ware will
adjust the compressor frequency or shut down the
system indicating the appropriate fault.
e indoor unit contains a digital display, which will
indicate the current fault. e evaporator, swing mo-
tors, fan motors and circuit board are also components
of the indoor unit. e indoor units have a bypass
switch to bypass the remote control if lost or batteries
fail. is will be explained later in this service manual.
e systems require R410A and are pre-charged for 25’
of lineset. Please refer to your installation manual for
additional charge for linesets longer than 25’.
e systems use a PVE oil and should require no ad-
ditional oil. All Terra units utilize an Oil Return Mode
which will return oil to the compressor should the
need arise.
System Overview
Product Introduction
Circuit Board with
G10 Technology
Compressor
Indoor Display
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