Lennox iComfort E30 Installation And Setup Manual page 35

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.
Applicable
Alert Priority
System
Code Condition
Component(s)
345 Critical Thermostat
347 Critical Thermostat
Moderate /
380 Smart Hub
Critical
Moderate /
381 Smart Hub
Critical
382 Moderate Smart Hub
418 Moderate Smart Hub
419 Critical Smart Hub
420 Critical Smart Hub
Table 16. Alert Codes and Troubleshooting
Actual Displayed Alert
Component or System Operational State and Troubleshooting Tip
Text
The O relay on the system component has failed. Either the pilot relay contacts did not
close or the relay coil did not energize.
• Possible O relay / stage 1 failure.
Relay O Failure
• Pilot relay contacts did not close or the relay coil did not energize.
• Replace system component (device) control.
The Y1 relay on the applicable system component has failed. Either the pilot relay con-
tacts 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.
Interlock relay failure (furnace or air handler modes only).
• Interlock relay is energized, but input is not sensed after three seconds.
Interlock Relay Failure
• There will be no heating or cooling due to this alert code – moderate condition.
• De-energize interlock relay and energize after five minutes if demand is still present –
critical condition.
Interlock relay stuck (furnace or air handler modes only).
• Interlock relay continuously sensed (with relay off).
Interlock Relay Stuck
• There is no heating and cooling operation – moderation condition.
• After 10 minutes if event still exist it will be escalated – critical condition.
Relay W1 failure (furnace or air handler modes only). W1 relay is energized but input is
Relay W1 Failure
not sensed after three seconds.
There is a faulty W output circuit.
• W terminal is energized while in cooling mode.
• Possible cause may be a stuck closed relay on the control, or something external to the
control that is energizing W terminal when it should not be energized.
W Output Hardware Fault
• Disconnect any wiring from the W terminal.
• If 24VAC is still present on the terminal, then it is a stuck relay.
• If 24VAC disappears, then there is a need to check any of the wires hooked up to the
W terminal.
The W output has reported more than five errors.
• The system will shut down the outdoor unit.
W Output hardware Fault
• The W output (code E418) on the outdoor unit has reported more than five strikes.
Lockout
• Disconnect thermostat wire from W and verify there is no 24VAC on the W.
• If 24VAC is present, replace the outdoor control.
The heat pump defrost cycle has taken more than 20 minutes to complete.
Defrost Out of Control • Defrost cycle lasts longer than 20 minutes.
• Check heat pump operation.
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How to clear alert code
Automatically clears after the fault
recovered following reset.
Automatically clears after reset and
Y1 input sensed.
Automatically clears after fault
recovered.
Automatically clears 30 seconds
after fault clears.
Automatically clears when W1 relay
input is sensed.
Automatically clears after fault
signal is removed.
Automatically clears after power
recycled.
Automatically clears when W1
signal is removed.