Lennox iComfort S30 Installation And Setup Manual page 61

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)
Furnace, air
handler or
347 Critical equipment
interface
module
Furnace or air
348 Critical
handler
349 Critical Furnace
350 Critical Air handler
351 Critical Air handler
352 Critical Air handler
353 Critical Air handler
354 Critical Air handler
Table 18. Alert Codes and Troubleshooting
Actual
Displayed Alert Component or System Operational State and Troubleshooting Tip
Text
The Y1 relay on the applicable system component has failed. Either the pilot relay contacts did
not close or the relay coil did not energize.
• System operation will stop.
Relay Y1
Failure
• Possible Y1 relay / stage 1 failure.
• Pilot relay contacts did not close or the relay coil did not energize;
• There is no input back to the applicable system component control.
The Y2 relay on the applicable system component has failed. Either the pilot relay contacts did
not close or the relay coil did not energize.
Relay Y2
• Possible Y2 relay / stage 2 failure.
Failure
• Furnace pilot relay contacts did not close or the relay coil did not energize
• No input back to furnace or air handler control.
The O to R link on the furnace needs to be restored.
• Configuration link R to O needs to be restored.
IFC Error Check
Jumper O to R
• Repair cut link by hard-wiring the R to O terminals on the terminal strip.
• Only applicable in non-communicating mode.
The air handler's electric heat is not configured or incorrectly configured.
• Heat call with no configured or incorrectly configured electric heat.
Electric Heat
• Check for proper configuring under Configuring Electric Heat Stages in the air handler
Not Configured
installation instructions. Smart Hub MUST be removed from the system before configuring
electric heat.
There is an issue with the air handler's first stage electric heat.
• Either the pilot relay contacts did not close or the relay coil in the electric heat section did not
Electric Heat
energize.
Stage 1
Problem
• Possible heat section / stage 1 failure.
• Air handler will operate on HP first stage for reminder of the heat call.
There is a issue with the air handler's second stage electric heat.
Electric Heat
• Either the pilot relay contacts did not close or the relay coil in the electric heat section did not
Stage 2
energize.
Problem
• The air-handler will operate on first stage electric heat until the issue is resolved.
There is a issue with the air handler's third stage electric heat.
Electric Heat
• Either the pilot relay contacts did not close or the relay coil in the electric heat section did not
Stage 3
energize.
Problem
• The air-handler will operate on first stage electric heat until the issue is resolved.
There is a issue with the air handler's fourth stage electric heat.
Electric Heat
• Either the pilot relay contacts did not close or the relay coil in the electric heat section did not
Stage 4
energize.
Problem
• The air-handler will operate on first stage electric heat until the issue is resolved.
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How to clear alert code
Automatically clears after reset
and Y1 input sensed.
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 after elec-
trical heat detection is success-
ful.
Automatically clears after fault
recovered.
Automatically clears after fault
recovered.
Automatically clears after fault
recovered.
Automatically clears after fault
recovered.