Carrier AQUASNAP 30RB060-390 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 61

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