Operation Manual

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11.1.3
Display LED STATUS
E2 Zero-crossing examination error
11.1.4
Display LED STATUS
E3 Fan speed beyond control
11.1.5
Display LED STATUS
E5 Open or short circuit of outdoor temperature sensor
yes No
Is power supply right?
Is connector connection good?
Indoor PCB is defective
Yes
Yes
Is connector connection good?
Is voltage being applied to the fan motor?
(
ran
g
90v-160v between mid
p
in and N on CN2
Indoor fan motor is defective
Repair the connector
Indoor PCB is defective
No
Yes
Yes
No
Is connection to connector good?
Replace the sensor
Repair connector