Samsung ACH2400C Service Manual page 35

Trouble Shooting
EC14 : When the trouble is found on the part related to the up & down swing motor of
indoor unit (cassette model)
Check point :
- Wire short between indoor unit PCB up & down swing motor connector or bad contact.
- Output of indoor unit micom
- Defect of up and down swing motor
After check of the short circuit of harness for
connecting the up and down swing motor, operate the
set in the cooling mode and oeprate the wind direction
up and down, and then perform the test.
Perform the operation on and do the up & down
Is the up & down control panel normally operationg?
No short or wrong connection of connection
Are the voltage of pin no. 1 and 6 of indoor
Is the output of pin no. 2, 3, 4, and 5 of CN 12 and 13
of indoor unit PCB spherical?
Replace up and down swing motor
34
swing action on.
NO
of connector wire?
NO
unit PCB DC 12V?
NO
YES
NO
Check and replace
the related part
YES
Normal
YES
Check and replace
wire harness?
YES
NO
Replace indoor unit
PCB