Lennox DAVE SIGNATURE SL280DFV Installation Instructions Manual page 50

Integrated Control Diagnostic Codes
Code Diagnostic Codes/Status of Equipment
E312 Restricted air flow in cooling or continu-
ous fan mode is lower than cfm setting.
E313 Indoor or outdoor unit capacity mismatch.
Communication only.
E334 Relay "Y1" stuck on interated control.
E345 Relay O Failure
E347 No 24 Volt output on Y1 of "integrated
control" with non communicating outdoor
unit.
E348 No 24 Volt output on Y2 of "integrated
control" with non?communicating outdoor
unit.
E370 Interlock switch sensed open for 2 min-
utes.
Action Required to Clear and Recover
Warning Only. Restricted airflow - Indoor blower is running at a re-
duced CFM (Cutback Mode - The variable speed motor has pre-set
speed and torque limiters to protect the motor from damage caused
by operating outside of design parameters (0 to 0.8" W.C.. total ex-
ternal static pressure). Check filter and duct system. To clear, re-
place filter if needed or repair/add duct. Cleared after the current
service demand is satisfied.
Incorrect indoor/outdoor capacity code selected. Check for proper
configuring in installation instructions. Alarm is just a warning. The
system will operate, but might not meet efficiency and capacity pa-
rameters. Alarm will clear when commissioning is exited. Cleared
after commissioning is complete.
Replace integrated control.
Operation stopped. Y1 relay / Stage 1 failed. (Pilot relay contacts
did not close or the relay coil did not energize; no input back to IFC
chip). Critical Alert. Cleared after reset and Y1 input sensed.
Y2 relay / Stage 2 failed. (Pilot relay contacts did not close or the
relay coil did not energize; no input back to IFC chip). Critical Alert.
Cleared after reset and Y1 input sensed.
Control sees the loss of 24VAC for 2 minutes.Terminate all services
and wait for interlock switch to close. The alarm will clear when
24VAC is continuously sensed on DS terminal for a minimum of 10
seconds or on a power reset.
Page 50