Carrier AQUASNAP 30RB060-390 Controls, Start-Up, Operation, Service And Troubleshooting Instructions page 60

PREFIX SUFFIX
DESCRIPTION
CODE CODE
Circuit A Welded Contactor
.01
Failure
Circuit B Welded Contactor
Ct .02
Failure
Circuit C Welded Contactor
.03
Failure
Initial Factory Configuration
.n0
Required
FC
.nn Illegal Configuration
Master Chiller Configuration
MC .nn
Error
Water Exchanger Freeze
.01
Protection
Circuit A Low Suction
.05
Temperature
Circuit B Low Suction
.06
Temperature
Circuit C Low Suction
.07
Temperature
.08 Circuit A High Superheat
P
.09 Circuit B High Superheat
.10 Circuit C High Superheat
.11 Circuit A Low Superheat
.12 Circuit B Low Superheat
.13 Circuit C Low Superheat
.14 Cooler Interlock Failure
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
Controls determine com-
pressor is still running
when circuit should be off
Controls determine com-
pressor is still running
when circuit should be off
Controls determine com-
pressor is still running
when circuit should be off
No configuration
Wrong or incompatible
configuration data
Wrong or incompatible
configuration data
Entering or Leaving
Thermistor sensed a
temperature at or below
freeze point.
Low Saturated Suction
Temperatures sensed for
a period of time.
EXV>98%, Suction
Superheat >54 F (30.0 C)
and SST<MOP for more
than 5 minutes
EXV 5% and Suction
Superheat is less than
the superheat setting by
at least 5 F (2.8 C) or
SST>Maximum Operat-
ing Pressure for more
than 5 minutes
Cooler Pump Interlock
circuit opens (consists of
chilled water flow system
and chilled water pump
interlock)
LEGEND
OAT — Outdoor Air Temperature
PTC — Positive Temperature Coefficient
SCT — Saturated Condensing Temperature
SPM — Scroll Protection Module
SST — Saturated Suction Temperature
60
ACTION TAKEN RESET
BY CONTROL TYPE
EXV, fan control,
and pump oper-
ate as normal to
save compressor
Manual
until high pres-
sure, freeze, or
flow failure condi-
ions occur
EXV, fan control,
and pump oper-
ate as normal to
save compressor
Manual
until high pres-
sure, freeze, or
flow failure condi-
ions occur
EXV, fan control,
and pump oper-
ate as normal to
save compressor
Manual
until high pres-
sure, freeze, or
flow failure condi-
ions occur
Unit not allowed
Automatic
to start
Unit not allowed
Automatic
to start
Unit not allowed
to start in Master- Automatic
Slave Control
Automatic, first
Unit shut down or occurrence in
not allowed to 24 hours,
start. Chilled Manual, if
Water Pump will multiple
be started alarms within
24 hours
Automatic, first
occurrence in
24 hours,
Circuit shut down Manual, if
multiple
alarms within
24 hours
Circuit shut down Manual
Automatic, first
occurrence in
24 hours,
Circuit shut down Manual, if
multiple
alarms within
24 hours
Automatic if
Unit shut down or
stage=0,
not allowed to
Manual if
start
stage>0.
PROBABLE CAUSE
One or more circuit com-
pressor contactors
welded closed.
One or more circuit com-
pressor contactors
welded closed.
One or more circuit com-
pressor contactors
welded closed.
Configuration error. Pass-
word may default to
0113.
Configuration error.
Configuration error. Refer
to Table 43.
Faulty thermistor, faulty
wiring, low water flow
rate, low loop volume, or
freeze conditions.
Faulty transducer, faulty
wiring, low water flow
rate, low loop volume,
fouled cooler, or freeze
conditions.
Faulty transducer, faulty
thermistor, faulty wiring,
faulty EXV, low refriger-
ant charge, plugged or
restricted liquid line.
Faulty transducer, faulty
thermistor, faulty wiring,
faulty EXV, or incorrect
configuration.
Low Water Flow, faulty
wiring or contacts, faulty
water flow switch, or
chilled water pump
problem. Remote lockout
if unit is equipped with an
EMM.