37
Table 3. Alarm Faults
Alarm
Mgr
Alarm
ID
Category
Alert
Level
(Severe,
Low,
Info)
Local
Display:
Alert Title
Local Display: Alert
Detailed Description
M3-Specific
Description
IMC Error Description
IMC Action
105
Configuration
Info
Economizer
Configuration
Error
Economizer configuration
error.
Reserved
Economizer configuration error. ECTO
6.26 does not agree with A56 DIP
settings, or ECTO 6.26 is out of range
for mode selected. Cases that can
cause this alarm:
• A56 DIP is set to ODE and ECTO
6.26 is set to a non-zero value.
• A56 DIP is set to TMP, A56 pot is
set to ABCD, and ECTO 6.26 is set
to a temperature setting greater
than 70°F or less than 35°F.
• A56 DIP is set to TMP, A56 pot is
set to DIFF and ECTO 6.26 is set to
a temperature setting greater than
40°F or less than 0°F.
1-Normal ODE operation.
2-No free cooling.
3-No free cooling.
106
Air Flow
Low
Building
Press Sensor
Problem
Building air pressure sensor
A34 problem. Check sensor
and wiring.
Building Press
Sensor
Building air pressure sensor A34
problem. Occurs only when:
• GP1 is present.
• A133 DIP switch is set to VAV.
• ECTO 8.16 is set to 4-7 or 12-23.
• A34 input (A133_P194-7) is less
than 0.2VDC (-.48”w.c.) or higher
than 9.8VDC (0.48”w.c.). The error
code is cleared when the A34
sensor input is between 0.2 and 9.8
VDC.
No exhaust fan operation.
107
Sensor
Low
Duct Supply
Press Sensor
Problem
Supply duct pressure sensor
A30 problem. Check sensor
and wiring.
Duct Supply Press
Sensor
Supply duct pressure sensor A30
problem.
Occurs only when:
• GP1 is present
• A133 DIP switch is set to VAV.
• ECTO 0.01 is not 0.
• PID mode is selected in ECTO 0.01
• A30 sensor input (A133_P194-6) is
greater than 9.8VDC (4.9”w.c.) or
the blower has been operating
for at least 16 seconds and the
VFD or bypass damper output is
greater than ECTO 0.26 and A30
sensor input is less than 0.2VDC
(0.10”w.c.).
Unit off.
108
Sensor
Low
Supply Duct
Press Limit
Exceeded
Supply duct pressure exceeded
maximum limit for more that 20
seconds.
Duct Supply High
Press Sensor
Supply duct pressure exceeded
maximum limit set by ECTO 0.21 for
more that 20 seconds.
Unit off.
