Samsung AG042KSVANH, Service Manual

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4-2. Service Operation
4-2-1. Special Operation
▶ Key input of the outdoor unit when the service enters the operation mode.
K1 (Number of press) KEY operation Display on 7-Segment
1times Refrigerant charging in Heating mode “ ” “ ” “ ” “ ”
2times Trial operation in Heating mode “ ” “ ” “ ” “ ”
3times Refrigerant discharging in Heating mode “ ” “ ” “ ” “ ”
4times Disuse
“ ” “ ” “ ” “ ”
5times Disuse
“ ” “ ” “ ” “ “
6times Disuse “ ” “ ” “ ” “ ”
7times Vacuum “ ” “ ” “ ” “ ”
8times Disuse
“ ” “ ” “ ” “ ”
9times Disuse
“ ” “ ” “ ” “ ”
10times Disuse “ ” “ ” “ ” “ ”
11times Disuse “ ” “ ” “ ” “ ”
12times End KEY operation -
K2 (Number of press) KEY operation Display on 7-Segment
1times Refrigerant charging in Cooling mode
“ ” “ ” “ ” “ ”
2times Trial operation in Cooling mode
“ ” “ ” “ ” “ ”
3times Pump down all units in Cooling mode “ ” “ ” “ ” “ ”
4times Auto trial operation “ ” “ ” “ ” “ ”
5times Checking the amount of refrigerant
“ ” “ ” “x” “x”
(Display of last two digits may differ
depending on the progress)
6times Discharge mode of DC link voltage “ ” “ ” “ ” “ ”
7times Forced defrost operation “ ” “ ” “ ” “ ”
8times Forced oil collection
“ ” “ ” “ ” “ ”
9times Inverter compressor 1 check
“ ” “ ” “ ” “ ”
10times Inverter compressor 2 check “ ” “ ” “ ” “ ”
11times Fan 1 check “ ” “ ” “ ” “ ”
12times Fan 2 check “ ” “ ” “ ” “ ”
13times End KEY operation
-
▶
To use key operating function for service and maintenance when installing module/group, set as main control or cancel in module/group.
(Body control settings : Hydro control Dip S / W 1 times On,
Modules / How to ungroup : Modular Controller Installation Manual Reference)
▶
During Discharging mode, voltage of Inv1 and Inv2 will be displayed alternately.
▶
Even when the power is off, it is dangerous when you come in contact with inverter PCB, fan PCB since high pressure
DC voltage is charged to those parts.
▶
When replacing or repairing the PCB, cut-off the power and wait until the DC voltage is discharged before replacing/
repairing them. - Wait for more than 15 minutes to allow those parts to be fully discharged.
▶
When there is error, Discharge mode of DC link voltage may not have been effective. Especially when E464 and E364
error is displayed, power element might be damaged so do not use the Discharge mode of DC link voltage.