61
Table 41 — Alarm Codes (cont)
LEGEND
PREFIX
CODE
SUFFIX
CODE
DESCRIPTION
REASON FOR ALARM
ACTION TAKEN
BY CONTROL
RESET
TYPE
PROBABLE CAUSE
P
.15
Condenser Flow Switch Failure —
None
Manual
Configuration error.
.16
Compressor A1 Not Started or
Pressure not Established
Compressor differential
(Discharge-Suction) did
not increase by 10 psig
(69 kPa) in 2 minutes
Circuit shut down
Manual
No power to the com-
pressor, faulty compres-
sor contactor, low control
voltage, faulty discharge
or suction pressure
transducers, wiring
error, improper electrical
phasing.
.17
Compressor A2 Not Started or
Pressure not Established
.18
Compressor A3 Not Started or
Pressure not Established
.19
Compressor A4 Not Started or
Pressure not Established
.20
Compressor B1 Not Started or
Pressure not Established
.21
Compressor B2 Not Started or
Pressure not Established
.22
Compressor B3 Not Started or
Pressure not Established
.23
Compressor B4 Not Started or
Pressure not Established
.24
Compressor C1 Not Started or
Pressure not Established
.25
Compressor C2 Not Started or
Pressure not Established
.26
Compressor C3 Not Started or
Pressure not Established
.27
Compressor C4 Not Started or
Pressure not Established
.28
Electrical Box Thermostat
Failure
Improper phasing
detected by the reverse
rotation board
Unit not allowed
to start
Automatic
Check power phasing,
improper wiring, or faulty
detection board.
.29
Loss of Communication with
System Manager
Loss of communication
with an external control
device for more than
2 minutes
Unit changes to
stand alone
operation
Automatic
Faulty communication
wiring, no power supply
to the external controller.
.30
Master/Slave Communication
Failure
Communication between
the master and slave
machines has been lost.
Units operate as
stand alone
machines
Automatic
Faulty communication
wiring, no power or con-
trol power to the main
base board to either
module.
.31
Unit is in Emergency Stop
Emergency Stop com-
mand has been received.
Unit shuts down
or not allowed to
start.
Automatic
Carrier Comfort Net-
work
®
Emergency Stop
Command received.
.32
Cooler Pump 1 Fault
Pump Interlock status
does not match pump
status.
Unit shuts down.
If available,
another pump will
start.
Manual
Faulty contacts, wiring
error, or low control
voltage.
.33
Cooler Pump 2 Fault
.34
Circuit A Reclaim Operation
Failure
Circuit A Reclaim Opera-
tion Failure
Reclaim operation
failure due to high
SCT
The affected
circuit shall
return to air
cooled mode
Manual
.35
Circuit B Reclaim Operation
Failure
Circuit B Reclaim Opera-
tion Failure
.37
Circuit A Repeated High
Discharge Gas Overrides
Multiple capacity
overrides due to high
saturated discharge
temperatures
Circuit shut down
Automatic
Condenser air recircula-
tion, dirty or plugged con-
denser coils, inaccurate
discharge transducer,
faulty condenser fan,
.38
Circuit B Repeated High
Discharge Gas Overrides
.39
Circuit C Repeated High
Discharge Gas Overrides
.40
Circuit A Repeated Low
Suction Temperature Overrides
Multiple capacity over-
rides due to low saturated
suction temperatures
Circuit shut down
Manual
Low water flow, low loop
volume, fouled cooler,
low refrigerant charge,
unit not configured for
brine with glycol in cooler.
.41
Circuit B Repeated Low
Suction Temperature Overrides
.42
Circuit C Repeated Low
Suction Temperature Overrides
.97
Water Exchanger Temperature
Sensors Swapped
Control detects EWT
below LWT for 1 minute
Unit shuts down
Manual
Wiring error. EWT and
LWT sensors swapped.
EMM —
Energy Management Module
OAT —
Outdoor Air Temperature
EWT —
Entering Water Temperature
PTC —
Positive Temperature Coefficient
EXV
—
Electronic Expansion Valve
SCT —
Saturated Condensing Temperature
HR
—
Heat Reclaim
SPM —
Scroll Protection Module
LWT —
Leaving Water Temperature
SST
—
Saturated Suction Temperature
MOP —
Maximum Operating Pressure
Summary of Contents for AQUASNAP 30RBA315
Page 77: ...77 Fig 37 Control Schematic 30RB060 080 a30 4619...
Page 78: ...78 Fig 38 Control Schematic 30RB090 150 a30 4620...
Page 79: ...79 Fig 39 Control Schematic 30RB160 190 a30 4622...
Page 80: ...80 Fig 40 Control Schematic 30RB210 300 a30 4622...
Page 81: ...81 Fig 41 Heat Reclaim Control Schematic a30 4622...