Lennox iComfort S30 Installation And Setup Manual page 50

Initial notification of critical alerts will pop up on the home screen and will be listed under notification menu. Minor and moderate alerts are found only under the notification menu.
* Current Lennox modulating outdoor units are XC20, XP20, XC25 and XP25.
Applicable
Alert Priority
System
Code Condition
Component(s)
12 Critical Thermostat
13 Critical Thermostat
14 Critical Thermostat
18 Minor Thermostat
19 Minor Thermostat
29 Critical Thermostat
Table 18. Alert Codes and Troubleshooting
Actual
Displayed Alert Component or System Operational State and Troubleshooting Tip
Text
Thermostat did not find an indoor unit. Make sure there is an iComfort indoor unit on the system.
• Check for voltage and missing component.
• Check R, i+, i- and C connections.
• Ohm wires for electrical continuity.
Incomplete
• Cycle power to both indoor unit first and then thermostat.
System
• Verify that equipment interface module (if applicable) is configured as either an air handler or
furnace when used with a non-communicating indoor unit.
• Go to menu > advance settings > view dealer control center > equipment and press reset
all equipment. This will allow the system to auto-detect any iComfort components attached.
• Replace indoor unit control if there is no response.
Thermostat found more than one outdoor unit, or more than one indoor unit, or more than one
thermostat connected to the system. Thermostat will display the message "Too Many Devices of
Duplicate
the Same Type".
Comfort Sensor
• Check wiring and remove duplicate equipment.
ID
• Go to menu > advance settings > view dealer control center > equipment and press reset
all equipment. This will allow the system to auto-detect any iComfort components attached.
The thermostat found more than one thermostat, indoor or outdoor unit on the system.
Too Many
• Check wiring and remove duplicate equipment.
Devices of the
• Go to menu > advance settings > view dealer control center > equipment and press reset
Same Type
all equipment. This will allow the system to auto-detect any iComfort components attached.
The outside temperature is below the level where the heat pump is programmed to heat the
Low Ambient
home. The system will not use the heat pump to warm your home.
HP Heat
• Outdoor temperature is below the low balance point.
Lockout
• Heat pump will not be used to service a heating demand.
The outside temperature is higher than the level where the furnace or electric heat is pro-
grammed to work. The system will only use the heat pump to warm your home.
High Ambient
• This is a notification only alert code.
Auxiliary Heat
Lockout
• Outdoor temperature is above the low balance point.
• Indoor unit (furnace or air handler) will not be used to service a heating demand.
The thermostat is reading an indoor temperature that is higher than 90ºF (factory default). The
thermostat will not allow any heating operation to begin until it senses an indoor temperature
lower than 90ºF. Indoor temperature rose above 90ºF during a heating or cooling demand.
Over
• Heating operation is not allowed.
Temperature
Protection • Check to ensure that heating equipment is not stuck ON (reversing valve, etc.)
• Check the accuracy of the thermostat temperature sensor.
• Select cooling system mode to cool the indoor space below 90ºF.
50
How to clear alert code
Automatically clears when the
system detects that the issue no
longer exists.
Automatically clears when the
system detects that the issue no
longer exists.
Automatically clears when the
system detects that the issue no
longer exists.
This is a notification only alert
code. Will automatically clear
once the outdoor temperature
rises above the low balance
point.
Automatically clears when the
system detects that the issue no
longer exists.
Automatically clears when the
system detects that the issue no
longer exists.