40
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
139
Air Flow
Low
High Outdoor
Airflow
Ventilation CFM is too high so
the RTU is wasting energy.
High Outdoor
Airflow
< Not implemented in IMC >
140
Configuration
Low
CFM Target Too
Low
CFM Unattainable. Verify the
MSAV blower settings and set
the CM targets above set CFM
Cfm Target Too Low < Not implemented in IMC >
141
Configuration
Low
CFM Target Too
High
CFM Unattainable. Verify the
MSAV blower settings and set
the CM targets below set CFM
Cfm Target Too
High
< Not implemented in IMC >
142
Reserved
143
Economizer
Low
OA Damper Error Outdoor air differential pressure
sensor value not in valid range.
OA Damper Error
< Not implemented in IMC >
144 - 145 reserved
146
General Fault
Info
Service Event
Service event logged.
Service Event
< Not implemented in IMC >
147
General Fault
Low
Damper Fdbk
Loss
During free cooling damper is
not modulating.
Damper Fdbk Loss < Not implemented in IMC >
148
Configuration
Low
Adv Airflow
Config Error
Economizer should be installed
and blower should be ECM
type.
EP Config Error
< Not implemented in IMC >
149
Economizer
Low
OA Diff Press
Sensor Error
Check outdoor air damper
differential pressure sensor and
wiring.
OA Diff Press
Sensor Error
< Not implemented in IMC >
150
Economizer
Low
Not Economizing
When OAS
May be due to the damper
motor being unplugged or
disconnected.
Not Economizing
When OAS
< Not implemented in IMC >
151
Economizer
Low
Economizing
When no OAS
This may be due to damper
motor being blocked or stuck
open and therefore not closing.
Economizing When
Outside Air Not
Suitable
< Not implemented in IMC >
152 - 164 reserved
165
Configuration
Info
Economizer
Unconfigured
Configuration ID 1, position 2 is
set to U.
Select applicable option using
setup/install wizard.
Economizer
Unconfigured
< Not implemented in IMC >
166
Heating
Low
Gas CAB No
Open Proof
GV1
The CAB proving switch is
detected as closed immediately
after the furnace demand relay
is energized and before the
CAB is energized. Gas valve
1.
Gas CAB No Open
Proof Gv1
< Not implemented in IMC >
167
Heating
Low
Gas CAB No
Open Proof
GV2
The CAB proving switch is
detected as closed immediately
after the furnace demand relay
is energized and before the
CAB is energized. Gas valve
2.
Gas CAB No Open
Proof Gv2
< Not implemented in IMC >
168
Heating
Low
Gas CAB No
Open Proof
Lockout GV1
System locked out due to GAS
CAB proving switch closed.
Max retries reached.
Gas CAB No Open
Proof Lockout
Gv1
< Not implemented in IMC >