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6–5
T-365
6.10 NO EVAPORATOR AIR FLOW OR RESTRICTED AIR FLOW
Condition
Possible Cause
Remedy/Refer-
ence Section
Evaporator coil blocked
Frost on coil
Dirty coil
No or partial evaporator air flow
Evaporator fan motor internal protector open
Evaporator fan motor(s) defective
Evaporator fan(s) loose or defective
Evaporator fan contactor defective
Replace
6.11 EAUTOFRESH NOT OPERATING
Condition
Possible Cause
Remedy/Refer-
ence Section
Vent not opening
Unit not Configured for eAutoFresh Operation
No action
Cd43 in Off mode
Wiring disconnected
Check wiring
Stepper drive defective
Stepper motor defective
Unit operating in frozen mode
Gas Limit mode unavailable
Check CO
2
sensor
Wiring disconnected
Check wiring
Unit operating in frozen mode
Unable to calibrate CO2 sensor
“Enter” Key not held for sufficient length of time
CO
2
outside of acceptable levels
Check
Check CO
2
sensor
Code 44 displays “-----”
Unit not Configured for eAutoFresh Operation
No action
Check CO
2
sensor
Summary of Contents for 69NT40-561-300
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Page 164: ...T 365 8 2 Figure 8 2 Unit Wiring Diagram Based on Drawing 62ï11755 ...
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