Carrier ComfortLink 30GXN - Compressor Alarm;Alert Circuit

42
Compressor Alarm/Alert Circuit — Each compres-
sor is directly controlled by a CCP module. Compressor faults
(T051, T052, T055, T056) are reported as alerts. The specific
fault condition for a compressor alert is included as part of the
alert description displayed on the Navigator. Press and
simultaneously to display description.
Table 32  Alarm and Alert Codes
ENTER
ESCAPE
ALARM/ALERT
CODE
ALARM OR
ALERT
DESCRIPTION
WHY WAS THIS ALARM
GENERATED?
ACTION TAKEN BY
CONTROL
RESET
METHOD
PROBABLE CAUSE
T026 Alert Compressor A1 Low
OilPressure–1
P
O
-P
e
< Oil Set Point 1.
See Note 1 and Fig. 20 on
page 49.
Comp A1 shut down Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Compressor A1 Low
OilPressure–2
P
O
-P
S
<OilSet
Point 2.
See Note 1 and Fig. 20 on
page 49.
Comp A1 shut down Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
T027 Alert Compressor A2 Low
OilPressure–1
P
O
-P
e
<OilSet
Point 1.
See Note 1 and Fig. 20 on
page 49.
Comp A2 shut down Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Compressor A2 Low
OilPressure–2
P
O
-P
S
<OilSet
Point 2.
See Note 1 and Fig. 20 on
page 49.
Comp A2 shut down Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
T028 Alert Compressor B1 Low
OilPressure–1
P
O
-P
e
<OilSet
Point 1.
See Note 1 and Fig. 20 on
page 49.
Comp B1 shut down Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Compressor B1 Low
OilPressure–2
P
O
-P
S
<OilSet
Point 2.
See Note 1 and Fig. 20 on
page 49.
Comp B1 shut down Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
T029 Alert Compressor B2 Low
OilPressure–1
P
O
-P
e
<OilSet
Point 1.
See Note 1 and Fig. 20 on
page 49.
Comp B2 shut down Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
Compressor B2 Low
OilPressure–2
P
O
-P
S
<OilSet
Point 2.
See Note 1 and Fig. 20 on
page 49.
Comp B2 shut down Manual Low Water Temperature, low
refrigerant charge, plugged oil
filter, closed oil valve, bad oil
solenoid, compressor oil
check valve stuck, oil line
check valve stuck, plugged oil
strainer
A030 Alarm Compressor A1 Pre-
Start Oil Pressure
Oil Pump did not build suffi-
cient pressure during pre-lube
cycle.
Compressor cannot
start.
Manual Low oil, oil pump failure, oil
solenoid failure, oil transducer
failure, check valve failed
open, oil shutoff valve closed.
A031 Alarm Compressor A2 Pre-
Start Oil Pressure
Oil Pump did not build suffi-
cient pressure during pre-lube
cycle.
Compressor cannot
start.
Manual Low oil, oil pump failure, oil
solenoid failure, oil transducer
failure, check valve failed
open, oil shutoff valve closed.
A032 Alarm Compressor B1 Pre-
Start Oil Pressure
Oil Pump did not build suffi-
cient pressure during pre-lube
cycle.
Compressor cannot
start.
Manual Low oil, oil pump failure, oil
solenoid failure, oil transducer
failure, check valve failed
open, oil shutoff valve closed.
A033 Alarm Compressor B2 Pre-
Start Oil Pressure
Oil Pump did not build suffi-
cient pressure during pre-lube
cycle.
Compressor cannot
start.
Manual Low oil, oil pump failure, oil
solenoid failure, oil transducer
failure, check valve failed
open, oil shutoff valve closed.