American Standard 4A6V8024A1000B, Service Facts

Page: 24 / 76

24 4A-V8-SF-1G-EN
Alert
Code
Alert
Group
Display
Assembly
Text
Sub-
alar-
m
A/TZONE
850/950
State action on
occurrence
State action on
clearance
Alert
Description
Possible Cause
114
Bad or
Missing
PM
PM DATA ERR 0 N/A
Continue normal
operation Continue normal
operation
PM data corrupt PM Error
PM MISSING 3 Err 114.03
Continue normal
operation Continue normal
operation PM missing with
good local copy
PM Error
PM UNIT ERR 4 N/A
Continue normal
operation Continue normal
operation
Bad data in PM
with good local
copy
PM error
PM MEM ERR 5 Err 114.05
Shutdown. No
compressor operation
until a good PM is
inserted.
Resume normal
operation Bad data in PM
with no local copy
PM Error
PM MISSING 6 Err 114.06
Shutdown. No
compressor operation
until a good PM is
inserted.
Resume normal
operation PM bad or missing
with no local copy
PM Error
155
Outdoor
EEV Motor
Fault
EEV MTR ERR 2 Err 155.02
Can not run in Heating
mode, Can run in
Cooling mode
Power cycle
The OD EEV
electric coil has
an open or
intermittent short
circuit.
EEV motor coil open
or shorted
156
System
Low
Charge
Fault
LOW CHARGE 1
N/A
High Superheat
occurrences
Superheat Change
occurs and allows
control within the
EEV range of
operation.
(Superheat target
is 10 d/-
4)
High Superheat
occurrence of 35
degrees or more
has been
detected for more
than 60 minutes.
System low charge,
liquid line restriction,
sensor calibration
159
Unit Bus
Fault
IPC3 COM ERR 5 Err 159.05
OD Continue normal
operation
Continue normal
operation.
Technician interface
available
Display Assembly
communication
error
Wire assembly
between Display
Assembly and IVSC
board
164
Outdoor
EEV Valve
Migrated
Open
EEV OPEN ERR 2
N/A
The valve is not
responding to a
change in position,
EEV supposedly
opened fully and no
change to
accommodate
superheat occurred.
Superheat Change
occurs and allows
control within the
EEV range of
operation
EEV migrated to
open position but
superheat is not
at the desired set
point. Valve is
not responding to
a change in
position.
Possible stuck valve
or sensor(s) out of
calibration
Outdoor
EEV Valve
Migrated
Closed
EEV CLSE ERR 3
N/A
The valve is not
responding to a
change in position,
EEV supposedly closed
fully and no change to
accommodate
superheat occurred.
Superheat Change
occurs and allows
control within the
EEV range of
operation
EEV migrated to
closed position
but superheat is
not at the desired
set point. Valve is
not responding to
a change in
position.
Possible stuck valve
or sensor(s) out of
calibration
165
Low
Superheat
Error
LO SUPERHEAT 1
N/A
Low Superheat
occurrences
Superheat Change
occurs and allows
control within the
EEV range of
operation
Low supper heat
(less than 3
degrees)has been
detected for more
than 60 minutes
Possible stuck valve,
sensor(s) out of
calibration, low
airflow, overcharge,
check valve leaking.
166
Low
Superheat
Error
LO SUPERHEAT 1
N/A
Low Superheat with
EEV closed
Superheat Change
occurs and allows
control within the
EEV range of
operation
EEV valve closed
and still flooding
Possible stuck valve,
sensor(s) out of
calibration, low
airflow, overcharge,
check valve leaking.
172
Key fault
KEY FAULT 1 N/A
OD continue normal
operation. CDA shall
quit generating key
events and will stay on
same screen till
timeout and then jump
to default screen.
Continue normal
operation.
Technician interface
available
Display Assembly
has a stuck key Faulty Display
Assembly
174
Suction
Pressure
Sensor
Fault
SUCT P SENSE 0 Err 174.00
Shutdown and enter a
hard lockout.
Compressor locked out
until power cycle and
requires service call. Power cycle. After
power cycle, the
compressor shall
resume normal
operation.
Pressure
transducer is
missing, open,
shorted or out of
range. Wiring or component
failure. (System
under vacuum or
suction pressure over
500psig)
V Va arriia ab blle e S Sp pe ee ed d A Alle errtt C Co od de ess