27
18. Alert Codes
Alert notifications are displayed in the alert section of the user interface. Notifications are categorized by system, RTU, zoning control (if installed) and iCON
system.
To expand a notification to bring up a detail description of the alert code, press the down arrow to expand the description. See table 3 for details on alert codes
and troubleshooting advice.
•
Severe
(red)
alerts are displayed on business (user) screen, in the business owner alert button, and in the Installer alert button. Critical means that a service
call is needed to get the system running.
•
Low
(yellow) means that the system will likely recover on its own, no action necessary.
•
Info
is information only, helps Lennox interpret test results and understand complicated behavior.
18.1. Main Alarm Faults
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
1
Power
Info
Erratic Power
Power loss for two cycles. This
may indicate that the unit power
is dirty or is of low quality.
Erratic Power
Power loss for two cycles. This may
indicate that the unit power is “dirty” or is
of low quality.
(None on 3-phase units.) 1-phase
units. IMC will cycle Compressor
off for 5 minutes (default).
2
Configuration
Info
ECTO Access
Error
ECTO access error. This
may indicate a problem with
the ECTO memory chip
and parameters may not be
changeable.
Removed
ECTO access error. This may indicate
a problem with the ECTO memory
chip and parameters may not be
changeable.
Controller will operate with the
factory ECTO defaults.
3
Reserved
4
Smoke
Severe
Smoke
Detected
A173 input indicates smoke
alarm.
Smoke
A17 input indicates smoke alarm.
Defined by ECTO 5.01. Default
action unit off.
5
Air Flow
Low
Blower - No Air
Flow Detected
S52 (Air Flow Switch) This
indicates no blower air
16 seconds after blower
demand.
Blower
S52 (Air Flow Switch) This indicates
no blower air 16 seconds after blower
demand.
Unit off.
6
Air Flow
Low
Dirty Air Filter
S27 (Dirty Filter Switch)
indicates a dirty filter.
Filter
S27 (Dirty Filter Switch) This indicates a
dirty filter.
None.
7
Configuration
Info
External
EEPROM write
error.
External EEPROM write
error.
Reserved
External EEPROM write error.
Failed to save error code or ECTO
value.
8
Air Flow
Low
Strike3 On
Blower
No airflow detected three times
during a demand.
Strike3 On
Blower
Reserved.
10
Power
Low
24VAC Power
Loss TB35-1
24VAC power loss at TB35-1
on A55 (M1) board. P111 pin
11.
Reserved
24VAC power loss at TB35-1 on A55
(M1) board. P111 pin 11.
Unit off.
11
Power
Low
24VAC Power
Loss TB34-1
24VAC power loss at TB34-1
on A55 (M1) board. P113 pin
1.
Reserved
24VAC power loss at TB34-1 on A55
(M1) board. P113 pin 1.
Unit off.
12
Cooling
Low
High Press S4
Open Comp1
The pressure in Compressor1
is too high. Compressor is
off.
High Press S4
Open Comp1
S4 (High Press. 1) is open. Note:
On Heat Pump 088S units, S4 or S5
(Compressor discharge temperature is
open.
Compressor 1 off.
