45
Table 11. CORE Control System Alarm and Event Codes
SELECTED ALARMS (MARKED WITH * IN TAbLE RESULT IN THE CLOSURE OF THE SERVICE RELAY CONTACTS (DO1).
ALARM
CODE
DISPLAY MESSAGE
EVENT ACTION
166
GAS CAB PRESSURE SW CLOSED
GV1
This alarm will occur when the combustion air pressure switch (S18) is detected as closed
immediately after the furnace demand relay is energized and before the combustion air
blower is energized. Gas valve 1.
167
GAS CAB PRESSURE SW CLOSED
GV2
This alarm will occur when the combustion air pressure switch (S45) is detected as closed
immediately after the furnace demand relay is energized and before the combustion air
blower is energized. Gas valve 2.
168*
COMBUSTION AIR SW NOT OPEN
LOCKOUT GV1
System locked out due to S45 switch closed and a specific number occurrences detected
based on Parameter 72 (max cai no prf occ) setting during a single cycle.
169*
COMBUSTION AIR SW NOT OPEN
LOCKOUT GV2
170
PWR EXH UNCONFIGURED
Configuration ID 1, position 3 is set as U (unconfigured).
171
PWR EXH CONFIG ERROR
Configuration ID 1, position 4 is set correctly. if position 3 is configured then position 4
must be also.
172
EP UNCONFIGURED
Economizer should be installed and blower should be ECM type.
173
AIR FLOW SW CONFIG ERR
Verify that Configuration ID 2, position 1 is set correctly.
174
BYPAS DAMPER CONFIG ERR
Room bypass damper operation is only compatible with cab blowers. Unit Controller will
only allow zone bypass unit operation if configuration ID1 is set to installed for units with B
or T type blowers. Alarm will automatically clear when configuration conflict is corrected.
175
NO INPUT SHARING
Alarm will occur if load shedding input is shared with other optional devices or inputs, for
example - global, blower overload, drain pan overflow, etc.
176
SBUS OBSOLETE M2 CMD
This alarm occurs when a SBUS master device sends a M2 style command to the CORE
Unit Controller. The alarm is immediately cleared and a history of the event is stored.
177
NO MODEL NUMBER
Missing model configuration data. Run setup > install and complete model number
information.
178
LOW SUMP SUPERHEAT
179
STRIKE3 LOW SUMP SUPERHEAT
180
DEFECTIVE CRANKCASE HEATER1
181
DEFECTIVE CRANKCASE HEATER2
182
SUCTION PRESSURE SENSOR
183
COMP1 SUMP TEMP SENSOR
•
Alarm will occur when an open or short condition is detected. Alarm will also occur
when unit controller via the temperature sensor detects an out of range. Valid range
is 30°F to 150°F. Possible causes are faulty temperature sensor / circuit or improper
installati
•
The alarming value indicates which Compressor Sump Temp sensor failed.
NOTE:
Not supported in Model L.
0 - Tandem 1 Compressor 2 Sump Temp Sensor Failure
1 - Tandem 2 Compressor 2 Sump Temp Sensor Failure
NOTE:
Not supported in Model L.
184
COMP2 SUMP TEMP SENSOR
185
ULTRA
Generic alarm for ultra issues. The alarming value will have different values for different
issues.
186*
BLOWER MOTOR FAULT
In systems with EBM blower, prodigy shall start monitoring the motor alarm output
(normally closed relay contact) ten seconds after blower command is sent. The CORE Unit
Controller will stop unit operation if fault conditions (relay contact open logic input high)
are detected.
NOTE:
Motor alarm is wired to P259 7; shared with VFD alarm and ECM blower rpm inputs.
Alarm will clear when in range temperature is detected.
187
INVERTER MINOR
•
Alarming Value = Inverter error code
•
Possible alarming values for Prodigy Alarm 187 are:
>
12 - High Comp Current
>
13 - High Heat sink temperature
>
14 - High PFC input current
•
If the alarm continues after outdoor conditions have moderated, check the fan,
charge and coil. Alarm 187 will automatically clear when minimum off time expires.
•
Refer to trouble shooting guide in service manual for more information.
NOTE:
The inverter will automatically slow the compressor speed due to any of the above conditions and the condition drops below the
time-based dependence of the system’s output on present and past inputs.
