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S
5-8
ERVICE
3 . Make sure there is no refrigerant left in the
system .
4 . Slide out the condensing unit . Be careful
using the condensing unit base to pull it
out . Make sure not to stress or interfere
with other parts .
5 . Remove coil by pulling up and disconnect
wires .
6 . Release clamps and remove welded joints
from the valves .
7 . Replace solenoid valves .
FNGSC8A, FNGSC4A
Condensing Unit
FNGSC6A
Condensing Unit
P/N 3141959_C
FNGSC8A
Condensing Units
Shown
INVERTER BOARD DIAGNOSTICS
Diagnostics:
The Fullmotion CF10B Inverter has two
diagnostics methods, by visual light emission
using a LED indication, or by serial
communication protocol .
LED indication:
The LED diagnostics function helps service
technicians to diagnose possible fault
components by blinking a LED inside the box
in different patterns . Basically, it indicates if
there is a problem with compressor CF10B
Inverter or Thermostat . The table below
describes the failure modes:
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
8 . Reverse the process and make sure
everything is in place .
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