214
10037 Circ A - High Con-
densing tempera-
ture out of map
compressor
The alarm will trip if discharge pres-
sure (DP_A) > 304.2 psi (2097 kPa). If
discharge pressure exceeds compres-
sor envelope for more than 60 sec-
onds, trip alarm. If SCT > 161°F
(71.7°C), trip alarm.
Circuit A will be shut
down immediately.
Manual If this condition is encountered, check the fol-
lowing items for faults:
• noncondensables in the refrigerant circuit
• condenser air recirculation
• proper refrigerant charge (undercharged)
• EXV operation
• operation beyond the limits of the machine
• condenser coils for debris or restriction
• condenser fans and motors for proper ro-
tation and operation
• the discharge service valves to be sure
that they are open
• check the discharge pressure transducer
for accuracy
• confirm unit configuration
10038 Circ B - High Con-
densing tempera-
ture out of map
compressor
The alarm will trip if discharge pres-
sure (DP_B) > 304.2 psi (2097 kPa). If
discharge pressure exceeds compres-
sor envelope for more than 60 sec-
onds, trip alarm. If SCT > 161°F
(71.7°C), trip alarm.
Circuit B will be shut
down immediately.
Manual
10067 Circuit A Low Oil
Pressure
Tested only when the compressor is
ON
The alarm will trip if the compressor
has been running for more than 60s
and oil pressure is lower than the
required level for more than 15s OR
The alarm will trip if the oil transducer
out of range for 5s (see oil transducer
alarms 12010 and 12011)
Circuit A will be shut
down.
Manual If this condition is encountered, check the fol-
lowing items for faults:
• sensor wiring to SIOB
• board for faulty channel
• faulty transducer
• plugged oil filter
• faulty oil solenoid valve coil
• stuck oil solenoid valve
• confirm manual service valves are fully
open
• confirm unit configuration
10068 Circuit B Low Oil
Pressure
Circuit B will be shut
down.
Manual
10070 Circuit A Max Oil
Filter Differential
Pressure
Tested when compressor is running:
The alarm will trip if the differential oil
pressure is greater than 50 psig for
more than 30s
Circuit A will be shut
down.
Manual If this condition is encountered, check the fol-
lowing items for faults:
• discharge and oil sensor wiring to SIOB
• boards for a faulty channel
• faulty transducer
• plugged oil filter
• faulty oil solenoid valve
• stuck oil solenoid valve
• confirm manual service valve is fully open
10071 Circuit B Max Oil
Filter Differential
Pressure
Circuit B will be shut
down.
Manual
10075 Circuit A Low Oil
Level
When the compressor is running or
off. The alarm will trip if the compres-
sor is running and the oil level switch
is opened for more than 10 seconds
NOTE:
When the units starts the oil level
switch is verified after 2 minutes.
Circuit A will be shut
down.
Automatic, first or second
occurrence in 24 hours OR
Manual, if the alarm has
occurred more than 3 times
in the previous 24 hours
If this condition is encountered, check the fol-
lowing items for faults:
• oil level in the oil separator
• oil level switch wiring to the SIOB
• board for a faulty channel
• faulty oil level switch
• oil solenoid valve stuck open
10076 Circuit B Low Oil
Level
Circuit B will be shut
down.
10078 Circuit A High Dis-
charge Gas Tem-
perature
Tested when compressor is running:
The alarm will trip if the discharge gas
temperature is higher than 210°F
(98.89°C) for more than 90s OR
higher than 215°F (101.6°C) for any
period of time
Circuit A will be shut
down
Manual If this condition is encountered, check the fol-
lowing items for faults:
• noncondensables in the refrigerant circuit
• condenser air recirculation
• proper refrigerant charge (undercharged)
• EXV operation
• operation beyond the limits of the machine
• condenser coils for debris or restriction
• condenser fans and motors for proper ro-
tation and operation
• the discharge service valves to be sure
that they are open
• check the discharge pressure transducer
for accuracy
• confirm unit configuration
10079 Circuit B High Dis-
charge Gas Tem-
perature
Circuit B will be shut
down
Manual
10081 Circuit A Suction
Valve closed
Tested when compressor is running.
The alarm will trip if economizer pres-
sure < suction pressure -14 psi (96.52
kPa) during startup
Circuit A will be shut
down
Manual If this condition is encountered, check the fol-
lowing items for faults:
• confirm suction service valve is fully open
(if equipped)
• compressor strainer for debris
• sensor wiring (economizer pressure trans-
ducer and suction pressure transducer)
10082 Circuit B Suction
Valve closed
Circuit B will be shut
down
Manual
10084 Circuit A High Oil
Filter Drop Pres-
sure
Tested when compressor is running.
The alarm will trip if the difference
between the Circuit Discharge Pres-
sure and the Compressor Oil Pressure
is greater than 30 psi (206.8 kPa) for
more than 5 minutes
No action on the unit Manual If this condition is encountered, check the fol-
lowing items for faults:
• sensor wiring to SIOB (discharge pressure
transducer and oil pressure transducer)
• board for faulty channel
• faulty transducer
• plugged oil filter
• faulty oil solenoid valve coil
• stuck oil solenoid valve
• confirm manual service valves are fully
open
10085 Circuit B High Oil
Filter Drop Pres-
sure
Table 168 — Alarm Details by Code (cont)
ALARM
CODE
ALARM NAME
CRITERIA
FOR TRIP
ACTION TAKEN
BY CONTROL
RESET
METHOD
POSSIBLE CAUSES/CORRECTIVE ACTIONS
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