Lennox International Inc EL296V01, XP2101, XC2105, XC1702, XP1906 Alert Codes and Troubleshooting

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Table 5. Alert Codes and Troubleshooting

Critical alerts are displayed on Home (user) screen, in the Homeowner alert button, and in the Installer

alert button. Minor and Moderate alerts are found only in the Installer alert button.

 

 

 

Alert

 

 

 

Code

Priority

Alert Text

Steps to clear

 

 

 

 

34

Critical

(Stat) The thermostat does not know the capac-

[Indicated unit] is missing the programmed unit capacity. Go to [Indicated unit] and program the unit

 

 

ity (tonnage) of the (furnace, air−handler or out-

capacity manually. See the unit IOM for programming instructions. Remove power to thermostat

 

 

door unit). Please program the correct capacity

before programming the unit control board. Once programming is complete, reconnect thermostat

 

 

of the (furnace, air−handler or outdoor unit).

wires and reconfigure system.

 

 

 

 

36

Critical

(Stat) The system has been heating for at least

Run the system in diagnostic mode and verify that it matches actual equipment operation. Check for

 

 

15 minutes, without a demand for heating.

other alarms/codes that may be preventing the system from operating as expected.

 

 

 

Step 1: Check all heating equipment to determine cause of heating demand.

 

 

 

Step 2: Recycle power.

 

 

 

System will clear code when it detects condition has cleared.

 

 

 

 

37

Critical

(Stat) The system has been cooling for at least

Run the system in diagnostic mode and verify that it matches actual equipment operation. Check for

 

 

15 minutes, without a demand for cooling.

other alarms/codes that may be preventing the system from operating as expected.

 

 

 

Step 1: Check all cooling equipment to determine cause of cooling demand.

 

 

 

Step 2: Recycle power.

 

 

 

System will clear code when it detects condition has cleared.

 

 

 

 

38

Critical

(Stat) The system has not been able to turn on

Run the system in diagnostic mode and verify that it matches actual equipment operation. Check for

 

 

the heating for more than 45 minutes. The sys-

other alarms/codes that may be preventing the system from operating as expected.

 

 

tem will go offline for 60 minutes and try again.

Step 1: Check all heating equipment to determine cause.

 

 

 

Step 2: Recycle power.

 

 

 

System will clear code when it detects condition has cleared.

 

 

 

 

39

Critical

(Stat) The system has not been able to turn on

Run the system in diagnostic mode and verify that it matches actual equipment operation. Check for

 

 

the cooling for more than 45 minutes. The sys-

other alarms/codes that may be preventing the system from operating as expected.

 

 

tem will go offline for 60 minutes and try again.

Step 1: Check all cooling equipment to determine cause.

 

 

 

Step 2: Recycle power.

 

 

 

System will clear code when it detects condition has cleared.

 

 

 

 

105

Critical

(Stat / Furnace / Air Handler / Outdoor Unit) The

Equipment is unable to communicate. This may indicate the existence of other alarms/codes. In

 

 

(stat, furnace, air−handler or outdoor unit) has

most cases errors are related to electrical noise. Make sure high voltage power is separated from

 

 

lost communication with the rest of the system.

RSBus. Check for mis−wired and/or loose connections between the stat, indoor unit and outdoor unit.

 

 

 

Check for a high voltage source of noise close to the system. Generally, this is a self−recoverable

 

 

 

error.

 

 

 

 

110

Critical

(Furnace) The line voltage is too low.

This alarm/code may appear during a brownout. Line voltage is below its designed operating value.

 

 

 

Check and correct the power line voltage.

 

 

 

 

111

Critical

(Furnace) The line power voltage wiring is re-

The unit is reporting that its power line and neutral are reversed. Turn off the power to the system and

 

 

versed.

correct the line power voltage wiring. System resumes normal operation 5 seconds after fault recov-

 

 

 

ered.

 

 

 

 

112

Critical

(Furnace) The reporting device cannot find

Provide proper earth ground to the equipment. System resumes normal operation 5 seconds after

 

 

earth ground. The thermostat will shut down the

fault recovered.

 

 

system.

 

 

 

 

 

 

 

 

table continued on next page

506920−01 09/12

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Contents 2P0912**P506920-01 INSTALLER’S SYSTEM SETUP GUIDEicomfortt−Enabled Units CONTROLSTable of Contents Setting up typical icomfortt systemsPage Outdoor Temperature Sensor option SupportsFigure 1. icomfort by Lennoxt system Installation and Setup Dealer Number Change settingsFigure 3. Settings change tools Figure 4. EnteringCirculate fan ON time setting Table 1. System setting defaults and rangeFigure 5. View/edit time and date Set time and date09 39 am Figure 6. Set current time and dateFigure 7. Using the Add or Remove Non−communicating equipment HUMIDITY CONTROL TIPSred settings Add Non−Communicating Outdoor unitFigure 8. Add non−communicating device SystemSystem 5a 5bFigure 9. Add or remove non−communicating device HumidifierDehumidifier Figure 10. Add or remove non−communicating deviceSystem DehumidifierAdjust a setting screen communicating devices Figure 11. Adjust communicating device screensFigure 13. Modify device settings Figure 12. Accessing device to modifyG71MPP or SLP98 Furnace Note Figure 14. Adjust a non−communicating device setting Figure 15. Adjust a non−communicating device setting Figure 16. Adjust dehumidification when not using Humiditrol or an auxiliary dehumidifier HUMIDIFICATION modes Humidification and Dehumidification ModesDEHUMIDIFICATION modes Figure 18. Select tests to run screen Use the Tests / Diagnostics featuresFigure 17. Start testing screen Figure 19. Typical tests results screensFigure 20. Testing finished screen Equipment, Alerts, DiagnosticsSet up Equipment parameters Figure 21. Equipment parameters screenRun Diagnostics Figure 22. Edit equipment detailsFigure 23. Select device and run diagnostics View and clear Installer AlertsFigure 24. Selecting and viewing alerts Figure 25. Cleared alert confirmationView cleared alerts Figure 26. Cleared alerts screenSTART Figure 27. Wi−Fi setupSecure Connection Recommended HERERegistration for online access Registering the icomfort Wi-FitthermostatFigure 28. Change Networks Figure 30. icomfort Wi-FitRegistration screen Figure 31. PC Welcome Screen Welcome homeHow Do I Upload a Skin? Wi-FitTherAccess installer program from Home screen yes noReconfigure a system Figure 34. Re−configuration process2nd Stage Differential where applicable2 Smooth Setback Recovery SSR Rules for SSRLow Balance Point Heat Pump, Dual Fuel and Balance PointsHeat Pump Balance Points High Balance PointShut down HP Figure 36. Variable Capacity Operation Flow Chart Gas Heat Control ModeStaged operation Table 2. Variable Capacity Furnace OperationLoad−tracking Variable Capacity FAQs SLP98V only Table 3. Adjustable Parameters Table Installer Installer entryTable 3. Adjustable Parameters Table Installer Lock in 2nd stage HP by Outdoor TempTable 3. Adjustable Parameters Table Installer AIR HANDLERTable 3. Adjustable Parameters Table Installer Gas Heat Airflow SettingsFURNACE Heat Pump Airflow Settings Cooling Airflow SettingsTable 3. Adjustable Parameters Table Installer Other Parameters Table 3. Adjustable Parameters Table InstallerTable 4. Adjustable Parameters Table User Filter 1 Timer Table 5. Alert Codes and Troubleshooting Table 5. Alert Codes and Troubleshooting AlertTable 5. Alert Codes and Troubleshooting AlertTable 5. Alert Codes and Troubleshooting AlertTable 5. Alert Codes and Troubleshooting AlertTable 5. Alert Codes and Troubleshooting AlertTable 5. Alert Codes and Troubleshooting AlertTable 5. Alert Codes and Troubleshooting AlertTable 5. Alert Codes and Troubleshooting AlertHomeowner Service Alert Codes8 Table 5. Alert Codes and TroubleshootingPossible Cause Table 6. Troubleshooting TipsIssue / Problem Corrective Action / CommentsTable 6. Troubleshooting Tips High Balance Point and Low BalTable 6. Troubleshooting Tips Determine the actual Software verTable 6. Troubleshooting Tips During the cooling mode the disWiring Diagrams icomfortt Communicating System WiringWiring Diagrams icomfort by Lennoxt AIR HANDLER AHCOptional Accessories Wiring for use with any icomfort by Lennoxt systemfor use with any icomfort by Lennoxt system Optional Accessories WiringLVCS Ventilation Control System attached to the PUSHBUTTON Setting up typical systems TIPSTIPS TIPS Setting up typical systemsT PUMP DUAL FUELTIPS Setting up typical systems TIPSTIPS Setting up typical systemsT PUMP UNITS TIPSTIPS icomfortt−Enabled Unit Table 7. Replacement ControlsREVISION HISTORY Replacement Kit Catalog No
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