152
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 ACTION
DISPLAY MESSAGE
ALARM
CODE
91*
OUTDOOR ENTH SENSOR A7
If Enthalpy Sensor failure is detected, the system will disable 'Free Cooling' opera
tion.
NOTE
: Valid Outdoor Enthalpy Sensor reading is required for both 'ODE' (Outdoor
Enthalpy) and 'ODE differential' (Outdoor differential). Valid Indoor Enthalpy Sensor
reading is required for 'ODE differential' (Outdoor differential).
Check economizer parameters 160 and 161. Also check enthalpy parameters 162
and 163.
Check sensor and wiring.
92*
INDOOR ENTH SENSOR A62
If Enthalpy Sensor failure is detected, the system will disable 'Free Cooling' opera
tion.
NOTE
: Valid Outdoor Enthalpy Sensor reading is required for both 'ODE' (Outdoor
Enthalpy) and 'ODE differential' (Outdoor differential). Valid Indoor Enthalpy Sensor
reading is required for 'ODE differential' (Outdoor differential).
Check wiring and test A62 sensor using specified method in M3 application guide,
section titled economizer checkout.
93*
BACKUP MODE
Check communication loss with network sensor or if M3 unit controller If NETWORK
INTERGRATION is set to RTU STANDALONE MODE and backup sensor is set to
RETURN AIR BACKUP.
while running in backup mode the unit controller will set this alarm. The unit controller
will return from Backup mode to Primary (Main) mode on a reset or after the Primary
mode (room Sensor is not in error or OR network communication is re-established
and available for 300 seconds.
Backup mode alarm will be cleared on the reset OR after the unit controller has re
turned to primary (main) system mode.
94*
BAD ZONE SENSOR SET POINT
Ensure that the heating and cooling set points honor the auto-changeover deadband.
95 - 98 RESERVED
99*
OUTDOOR ECON SENSOR A24
Check sensor and wiring. This alarm activates when the A24 sensor input signal is
continuously above 25% of sensor measuring range for more than five minutes with
blower stopped. The M3 unit controller will disable the Outdoor Air CFM control. The
alarm automatically clears when the sensor reading is below 10% sensor measuring
range for one minute.
100*
AIR VOL CONTROL SETUP ERROR
Check for proper installation of GP board and settings.
101*
MGV CONTROL SETUP ERROR
Check for proper installation of GP board and settings.
102*
GP CONTROL SETUP ERROR
Check for proper installation of GP board and settings.
103*
ADVANCED CONTROL SETUP ERROR
Check M3 unit controller Configuration ID 1 settings.
104 - 105 RESERVED
106*
BUILDING PRESS SENSOR A34
Check sensor and wiring.
107*
DUCT SUPPLY PRESS SENSOR A30
Check sensor and wiring.
The unit controller will set Supply Air Static Pressure Sensor (A30) error status if:
Input signal is above 4.9" wc for more than 30 seconds.
OR
Input signal is below 0.1"wc 20 seconds after the blower has started with setting
at or above Blower Output Static Duct Alarm Check.
The M3 unit controller will clear the Supply Air Static Pressure Sensor (A30) error
status and alarm after the expiration of Error Time OFF delay.
108
DUCT SUPPLY HIGH PRESS SENSOR A30
Check sensor and wiring.
The M3 unit controller will shutdown operation for Error Off time (parameter 110) if
supply air static pressure exceeds supply static shutdown setpoint for 20 seconds
(default) parameter 42.
The M3 unit controller will clear High Supply Static (Duct) Pressure after Error Off
Time has expired and static duct pressure is below Supply Static Set Point Shut
down.
