American Standard 4A6V8024A1000B, Сервисные данные

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22 4A-V8-SF-1G-EN
Variable Speed Alert Codes
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
18
Control
Failure
CTRL FLT 4 Err 18.04
Shutdown. Send Err
code to thermostat
and Fault text to CDA
Resume normal
operation.
Internal control
error is detected
Control failure,
replace IVSC
67
Temp
Sensor
Fault
AMB T SENSE 0 Err 67.00
For Cooling mode,
“Assume Ambient
Temp” as per Limp
along mode and
Continue normal
operation. For Heating
mode, go to timed
defrost.
With actual
ambient
temperature,
continue normal
operation. For
Heating mode,
follow demand
defrost algorithm
Ambient
Temperature
Sensor alert
Ambient Sensor out-
of-range (Open/
Shorted/Missing)
COIL T SENSE 1 Err 67.01
For Cooling mode,
continue normal
operation. For heating
mode, go to timed
defrost. For Cooling mode,
continue normal
operation. For
heating mode, go
to timed defrost.
Coil Temperature
Sensor alert
Coil Sensor out-of-
range (Open/
Shorted/Missing)
EXT T SENSE 3 Err 67.03
Cooling - Normal
operation Continue normal
operation
External
Temperature
Sensor alert
Ext Sensor out-of
range (Shorted)
Open/ Missing revert
to Ambient Sensor
input
DOME T SENSE 4 Err 67.04
Cooling - Normal
operation Continue normal
operation
Dome
Temperature
Sensor is faulted
in Cooling mode
Dome Sensor out-of-
range (Open/
Shorted/Missing)
DOME T SENSE 5 Err 67.05
Heating - Limp along
mode of constant
speed (compressor
speed is limited to
2400 RPM)
Ramp up to
demand speed and
resume normal
operation. Dome
Temperature
Sensor is faulted
in Heating mode
Dome Sensor out-of-
range (Open/
Shorted/Missing)
SUCT T SENSE 6 Err 67.06
Cooling - Normal
operation Continue normal
operation
Suction
Temperature
Sensor is faulted
in Cooling mode
Suction Sensor out-
of-range (Open/
Shorted/Missing)
SUCT T SENSE 7 Err 67.07
Heating - Limp along
mode of constant
speed (Compressor
speed is limited to
2400 RPM, EEV is
locked to safe position)
Ramp up to
demand speed and
resume normal
operation. Suction
Temperature
Sensor is faulted
in Heating mode
Suction Sensor out-
of-range (Open/
Shorted/Missing)
CDT UNATCHD 8 Err 67.08 Heating - Limp along
mode of constant
speed (compressor
speed is limited to
2400 RPM) Ramp up to
demand speed and
resume normal
operation. Compressor
DomeTempera-
ture Sensor not
attached to
Compressor
(Heating Mode) Compressor
DomeTemperature
Sensor not attached
to Compressor
(Heating Mode)
Introduced with
AOCSoftware Version
2, Fall of 2014)
68
Defrost
Fault
DFT FAULT A 0
N/A
As defined in Defrost
algorithm Continue normal
operation
Defrost Fault A
has been
detected
Low heat pump
capacity (Inoperative
compressor, loss of
charge, shorted coil
sensor, open ambient
sensor)
DFT FAULT B/C 1 N/A
As defined in Defrost
algorithm Continue normal
operation
Defrost Fault B or
C has been
detected
Fault B indicates 10
defrosts terminated
on time override.
Fault C indicates
sensor High Delta T.
DFT FAULT
A(B/C)
2
N/A
As defined in Defrost
algorithm Continue normal
operation
Defrost Fault A
and B or A and C
have been
detected
Within a given length
of time, both faults
existed