Lennox iComfort S30 Installation And Setup Manual page 71

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)
506 Critical PureAir S
532 Moderate IHarmony
Moderate/ iHarmony Zone
542
Critical Sensor
Moderate/ iHarmony Zone
543
Critical Sensor
Moderate/ iHarmony Zone
544
Critical Sensor
Moderate/ iHarmony Zone
545
Critical Sensor
iHarmony Zone
546 Critical
Sensor
iHarmony Zone
547 Critical
Sensor
iHarmony Zone
548 Critical
Sensor
iHarmony Zone
549 Reminder
Sensor
iHarmony Zone
550 Reminder
Sensor
Equipment
Moderate /
594 interface
Critical
module
600 Minor Outdoor unit
Table 18. Alert Codes and Troubleshooting
Actual
Displayed Alert Component or System Operational State and Troubleshooting Tip
Text
UV Lamp Life
UV Lamp Life at 0%
at 0%
Zoning Pressure Switch Opened (high pressure)
Zoning
• Compressor pressure is above the specified limit.
Pressure Switch
Opened (High
• Compressor is turned off.
Pressure)
• Zoning will be restored once the high pressure switch closes.
Zone 1
Temperature
Sensor Problem
Zone 2
• Zone temperature sensor reading out of range.
Temperature
• Open or short zone temperature sensor detected for more than five second.
Sensor Problem
• Damper control module will operate in non-zone mode (all dampers open) – moderate condition.
Zone 3
• If after 10 minutes the condition does not change, the priority code is change to critical. System
Temperature
will continue to operate in non-zone mode.
Sensor Problem
Zone 4
Temperature
Sensor Problem
Zone Sensor EEPROM error (Power ON). System shall restore everything to Energy save De-
Memory Error
fault and operate.
Zone Sensor EEPROM error (Operating). System shall operate in normal mode operation until
Memory Error power off. The reading for humidity will not be valid. This message indicates hum sensor is not
working correctly.
Humidity Zone Sensor - Hum sensor error (without humidifier or dehumidifier): sensor reads out of range
Sensor Error 0% to 100%
User Editable Zone Sensor custom reminder1. Displayed in notification screen.
User Editable Zone Sensor custom reminder2. Displayed in notification screen.
Pre-coil discharge air temperature sensor problem (dual-fuel mode only). Advances from moder-
ate to critical after ten (10) minutes.
Pre-Coil Air
• Interlock relay energized, but input not sensed after three seconds.
temp Sensor
Problem
• No heating and cooling operations.
• De-energize interlock relay and re-energized five minutes later if demand is still present.
Compressor has been cycled OFF on utility load shedding.
• Load shedding function provides a method for a local utility company to limit the maximum
Load Shed
power level usage of the outdoor unit.
Event
• The feature is activated by applying 24VAC power across the L and C terminals on the outdoor
control.
71
How to clear alert code
None
Automatically clears after
compressor pressure is within
limits.
Automatically clears 30 seconds
after condition no longer exist.
Zone sensor will have to be
replace.
Zone sensor will have to be
replace.
Zone sensor will have to be
replace if it does not auto correct
itself.
Pressing done button will clear
the reminder or pressing remind
later on pop-up screen will ex-
tend the duration.
Alarm clears five minutes after
fault clears.
Automatically clears when L
terminal is inactive.