SERVICING
72
PCBHR104
UNITARY DIAGNOSTIC CODES
Symptoms
of Abnormal
Operation
Diagnostic/Status LED Display
Codes
Fault
Description Possible Causes
Corrective
Actions
Notes & Cautions
Digit 3
Digit 2
Digit 1
• Air conditioner/heat
pump fails to operate
• Integrated control
module diagnostic/
status LED display
shows the indicated
code
BLANK
d
0
• Data not yet
on Network
• Air conditioner/
heat pump is
wired as part of
a communicating
system and
integrated control
module does not
contain any shared
data
• Verify system type
(communicating or
legacy)
• Populate shared
data using Bluetooth
®
Shared Data Loader
BTSDL01
• Wire system as
legacy system
• Turn power OFF
prior to repair
• Use Bluetooth
®
Shared Data Loader
BTSDL01 for your
specific model
• Insert Bluetooth
®
Shared Data Loader
BTSDL01 BEFORE
turning power ON.
Bluetooth
®
Shared
Data Loader
BTSDL01 may be
removed after data
is loaded. Turn
power OFF before
removing Bluetooth
®
Shared Data Loader
BTSDL01
• Air conditioner/heat
pump fails to operate
• Integrated control
module diagnostic/
status LED display
shows the indicated
code
BLANK
d
1
• Invalid Data
on Network
• Air conditioner/
heat pump is
wired as part of
a communicating
system and
integrated control
module contains
invalid shared data
or network data
is invalid for the
integrated control
module.
• Verify system type
(communicating or
legacy)
• Populate correct
shared data using
Bluetooth
®
Shared
Data Loader
BTSDL01
• Wire system as
legacy system
• Turn power OFF
prior to repair
• Use Bluetooth
®
Shared Data Loader
BTSDL01 for your
specific model
• Insert Bluetooth
®
Shared Data Loader
BTSDL01 BEFORE
turning power ON.
Bluetooth
®
Shared
Data Loader
BTSDL01 may be
removed after data
is loaded. Turn
power OFF before
removing Bluetooth
®
Shared Data Loader
BTSDL01
• Air conditioner/heat
pump fails to operate
• Air conditioner/heat
pump operating at
reduced performance
• Air conditioner/heat
pump operating at low
stage when expected
to operate at high
stage
• Integrated control
module diagnostic/
status LED display
shows the indicated
code
BLANK
d
2
• System
mismatch
• Air conditioner/
heat pump is
wired as part of
a communicating
system and outdoor
unit requires
airflow greater than
indoor unit’s airflow
capability
• Shared data is
incompatible with
the system or
missing parameters
• Verify system type
(communicating or
legacy)
• Verify shared data
is correct for your
specific model;
re-populate data if
required
• Wire system as
legacy system.
• Turn power OFF
prior to repair
• Use Bluetooth
®
Shared Data Loader
BTSDL01 for your
specific model
• Insert Bluetooth
®
Shared Data Loader
BTSDL01 BEFORE
turning power
ON. Bluetooth
®
Shared Data Loader
BTSDL01 may be
removed after data
is loaded. Turn
power OFF before
removing Bluetooth
®
Shared Data Loader
BTSDL01
Summary of Contents for ASXC16
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