Lennox PRODIGY2.0 - Page 155

155
Table 65. Prodigy 2.0 Alarm and Event Codes
Selected alarms (marked with * in table result in the closure of the service relay contacts (DO1).
EVENT ACTIONDISPLAY MESSAGE
ALARM
CODE
176
SBUS RECEIVED AN OBSOLETE M3
COMMAND
This alarm occurs when a SBUS master device sends a M2 style command to the
M3 unit controller. The alarm is immediately cleared and a history of the event is
stored.
177 MODEL NUMBER NOT DEFINED
Missing model configuration data. run setup > install and complete model number
information.
178 - 181 RESERVED
182
ULTRA: SUCTION PRESSURE SENSOR
ERROR
Prodigy provides 0-5VDC analog input for the suction pressure sensor. Sensor out
put is connected to P333, pin 1. valid suction pressure range is 0 to 300 psig.
If Suction Pressure Sensor is detected on Energence Ultra-high efficiency unit falls
below the 30 psig then Prodigy will assume that the Pressure Sensor sensor is faulty
and ignore Pressure Sensor readings. alarm will automatically clear once input is
within normal operating range.
The alarming value indicates which suction pressure sensor failed.
0 - Tandem 1 Suction Pressure Sensor Failure
1 - Tandem 2 Suction Pressure Sensor Failure
183
ULTRA: COMPRESSOR 1 SUMP
TEMPERATURE SENSOR ERROR
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
installation.
The alarming value indicates which Compressor Sump Temp sensor failed.
0 - Tandem 1 Compressor 2 Sump Temp Sensor Failure
1 - Tandem 2 Compressor 2 Sump Temp Sensor Failure
184
ULTRA: COMPRESSOR 2 SUMP
TEMPERATURE SENSOR ERROR
185 ENGINEERING USE ONLY.
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 M3
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 LOW LEVEL ALARM
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.