Midea MSH-07CRN1, MSH-07HRN1, MSH-09CRN1, MSH-09HRN1, MSH-12CRN1, MSH-12HRN1 - Page 301

11.1.3
Display LED STATUS
E2 Zero-crossing examination error
Is power supply right?
Yes
Is connector connection good?
Yes
Indoor PCB is defective
11.1.4
Display LED STATUS
E3 Fan speed beyond control
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
No
Indoor PCB is defective
No
Yes
Yes
11.1.5
Display LED STATUS
E5 Open or short circuit of outdoor temperature sensor
yes No
300
Is connection to connector good?
Replace the sensor
Repair connector