Lennox S40 - Page 88

88
Table 21. Lennox S40 Smart Thermostat Alert Codes and Troubleshooting
E2A=Errors to Action, GF= Gas Furnace, AH=Air Handler, IU=Indoor unit (GF or AH), HP=Heat Pump, AC=Air Conditioner, OU=Outdoor Unit (AC or HP), PA=Pure Air S, ZA=Zone system,
SRS=Smart Room Sensor, TS=Thermostat , IAQ- IAQ Monitor and WE=Wi-Fi Extender
Alert
Code
Inverter
Flash
Code
Priority
Condition
Actual Displayed Alert
Text Under dealer control
center > Notications
Component or System Operational State and Troubleshooting Tip
How to clear
alert code
70502 Service Soon
Sensor: {Custom
Sensor Name}: Internal
Fault
Unable to access internal data. Cycle power. If cycling power does not resolve issue, replace Smart Room
Sensor.
Automatically clears
when the system
detects that the issue
no longer exists.
70503 Maintenance
Sensor: {Custom
Sensor Name}:
Low Battery - Change
Batteries Soon
Battery life is less than 3%. Replace with two Lithium Ion AA batteries to resolve issue.
Automatically clears
when the system
detects that the issue
no longer exists.
70504 Maintenance
Sensor: {Custom
Sensor Name}: 1%
Battery - Change
Batteries
Battery percent is less than 1%. Replace with two Lithium Ion AA batteries to resolve issue.
Automatically clears
when the system
detects that the issue
no longer exists.
71001 Service Soon
WE: Internal Data
Fault
• Unable to access internal data.
• Upon power cycle condition may clear itself.
• If recycling power does not resolve issue, replace Extender.
Upon power cycle
condition may clear
itself.
71504
Information
Only-Dealer
OU: Suction
Temperature Sensor:
incorrect reading
• Measured suction temperature (ST) is not within the expected range.
• No major impact to the system
• Check and replace sensor if it is failed.
Automatically clears
when the system
detects that the issue
no longer exists.
71505
Information
Only-Dealer
OU: Liquid
Temperature Sensor:
incorrect reading
• Measured liquid temperature (LT) is not within the expected range.
• No major impact to the system
• Check and replace sensor if it is failed.
Automatically clears
when the system
detects that the issue
no longer exists.
71506
Information
Only-Dealer
OU: Suction Pressure
Sensor: Incorrect
Reading
• Measured suction pressure (SP) is not within the expected range.
• No major impact to the system
• Check and replace sensor if it is failed.
Automatically clears
when the system
detects that the issue
no longer exists.
71507
Information
Only-Dealer
OU: Liquid Pressure
Sensor: Incorrect
Reading
• Measured liquid pressure (LP) is not within the expected range.
• No major impact to the system
• Check and replace sensor if it is failed.
Automatically clears
when the system
detects that the issue
no longer exists.
71508
Information
Only-Dealer
OU: Outdoor
Temperature Sensor:
Incorrect Reading
• If measured outdoor temperature (ODT) is not within the expected range.
• No major impact to the system
• Check and replace sensor if it is failed.
Automatically clears
when the system
detects that the issue
no longer exists.
71509
Information
Only-Dealer
HP: Outdoor Coil
Temperature Sensor:
Incorrect Reading
• If measured outdoor coil temperature (ODTCoil T) is not within the expected range.
• No major impact to the system
• Check and replace sensor if it is failed.
Automatically clears
when the system
detects that the issue
no longer exists.