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Service Manual

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Table Of Contents
Troubleshooting by Error Codes SiUS281811E
208 Part 6 Service Diagnosis
Note(s)
1. Pull out and insert the connector once and check it is absolutely connected.
2. Method to check transmission part of indoor unit main PCB.
(1) Turn OFF the power and remove the connector X70A of indoor unit main PCB
(A1P).
(2) Short circuit X70A.
(3) After turning ON the power, check below numbers under field setting from
remote controller.
(Confirmation: Second code No. at the condition of first code No. 21 on mode No.
41)
Determination 01: Normal
Other than 01: Transmission error on indoor unit main PCB
After confirmation, turn OFF the power, take off the short circuit and connect X70A
back to original condition.