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Ignition Control 107045-XX Diagnostic Codes Continued
Code Diagnostic Codes/Status of Equipment Action Required to Clear and Recover
E312 Restricted air ow in cooling or continu-
ous fan mode is lower than cfm setting.
Warning Only. Restricted airow - 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 lter and duct system. To clear, re-
place lter if needed or repair/add duct. Cleared after the current
service demand is satised.
E313 Indoor or outdoor unit capacity mismatch.
Communication only.
Incorrect indoor/outdoor capacity code selected. Check for proper
conguring in installation instructions. Alarm is just a warning. The
system will operate, but might not meet eciency and capacity pa-
rameters. Alarm will clear when commissioning is exited. Cleared
after commissioning is complete.
E334 Relay “Y1” stuck on interated control. Replace integrated control.
E345 Relay O Failure
E347 No 24 Volt output on Y1 of ”integrated
control” with non communicating outdoor
unit.
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.
E348 No 24 Volt output on Y2 of ”integrated
control” with non?communicating outdoor
unit.
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.
E370 Interlock switch sensed open for 2 min-
utes.
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.
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