American Standard 4A6V0024A1000B Service Facts page 29

Display
Alert
Alert
Assembly
Group
Code
Text
CDT HI SP CO
CDT LO SP CO
LSPP CLG CO
LSPP HTG CO
Protection
184 Algorithm
Fault
MCLP CO
DIAGCUR CO
MAX NORM LO
HARD
LOCKOUT
4A-V0-SF-1G-EN
Sub-
A/TZONE
State action on
alar-
850/950
occurrence
m
Shutdown. Dome
temperature sensor
value is 260°F or
higher for at least 15
seconds with
compressor speed
1 "Wait"
greater than 2400
RPM. Soft lockout.
Send "Wait" to
thermostat, send Alert
to CDA home screen
menu and history
Shutdown. Dome
temperature sensor
value is 260°F or
higher for at least 15
seconds with
compressor speed less
2 "Wait"
than 2400 RPM. Soft
lockout. Send "Wait" to
thermostat, send Alert
to CDA home screen
menu and history
Shutdown. Soft
lockout. Send "Wait" to
thermostat, send Alert
3 "Wait"
to CDA home screen
menu and history
Shutdown. Soft
lockout. Send "Wait" to
thermostat, send Alert
4 "Wait"
to CDA home screen
menu and history
Shutdown. Soft
lockout. Send "Wait" to
thermostat, send Alert
5 "Wait"
to CDA home screen
menu and history
Shutdown. Soft
lockout. Send "Wait" to
thermostat, send Alert
6 "Wait"
to CDA home screen
menu and history
Can't start system
without Service being
7 Err 184.07 called. Send error to
thermostat and alert
menu in CDA
Can't start system
without Service being
8 Err 184.08 called. Send error to
thermostat and alert
menu in CDA
V V a a r r i i a a b b l l e e S S p p e e e e d d A A l l e e r r t t C C o o d d e e s s
Alert
State action on
Description
clearance
Compressor High
Resume normal
Temperature
operation after
Protection at High
cutout time has
Speed- Shutdown
elapsed. CO=15
(Dome Temp
minutes
Sensor).
Compressor High
Resume normal
Temperature
operation after
Protection at Low
compressor cutout
Speed-Shutdown
time has elapsed.
(Dome Temp
CO=15 minutes
Sensor).
Low Suction
Resume normal
Pressure
operation after
Protection in
compressor cutout
Cooling Mode.
time has elapsed.
Less than 50
CO=5 minutes
PSIG
Low Suction
Resume normal
Pressure
operation after
Protection in
compressor cutout
Heating Mode.
time has elapsed.
Less than 13
CO=5 minutes
PSIG
Maximum
Resume normal
Current Low
operation after
Speed Protection.
compressor cutout
High compressor
time has elapsed.
load during low
CO=5 minutes
speed operation.
In the
compressor
Resume normal
heating mode,
operation after
current has
compressor cutout
exceeded
time has elapsed.
allowable limit at
CO=5 minutes
the operating
conditions.
Can be cleared only
Maximum
on power cycle.
number of
After power cycle,
protection
the compressor
shutdowns (Err
shall resume
184.xx) have
normal operation.
occurred.
Can be cleared only Universal Hard
on power cycle. Lockout. Outdoor
Resume normal EEV will drive
operation. open.
Possible Cause
High super heat at
compressor - Low
charge, restricted
metering device,
restricted condenser
airflowin cooling
mode, sensor
accuracy, high indoor
ambient in heat
mode, (Indoor set
point above 80°F)
(Increase IDairflow)
High super heat at
compressor - Low
charge, restricted
metering device,
restricted condenser
airflow in cooling
mode, sensor
accuracy, high indoor
ambient in heat
mode, (Indoor set
point above 80°F)
(Increase IDairflow)
Low charge, EEV
pump down,
restriction. Pressure
transducer
calibration.
Low charge, EEV
pump down,
restriction. Pressure
transducer
calibration. Extremely
low outdoor ambient
(ODTless than minus
10°F)
System operating
under temperature
extremes. Possible
Derate condition,
high compression
ratio, damaged
compressor
(bearings/scroll set
galled). Check for
high dome
temperature alert in
previous history.
At high speed
operation (3600 RPM
and above) Drive
output current limit
has been exceeded.
Check for low indoor
airflow, high system
charge.
Check previous
history for 184.xx
faults leading to
lockout.
Occurs anytime the
system enters the
Hard Lockout State.
Investigate Alerts
leading to this
condition.
29