Troubleshooting
4-10
Samsung Electronics
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Vacuum Operation
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Operation to facilitate vacuum to open the valve after the Outdoor Unit repair.
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Piping Inspection Operation
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Operation mode to check the status of the piping between the MCU and the indoor unit.
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Heat Pump Model : Water temperature is more than 25°C / Cooling Auto Trial Operation start
Water temperature is less than 25°C / Heating Auto Trial Operation start
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Discharge Mode Operation
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Outdoor power is turned off, the Inverter PCB charging a high DC voltage, so dangerous to touch.
- To replace the PCB, first turn off the power and the begin if DC voltage is discharged.
- If not use the discharge mode, the discharge time of about 15 minutes takes.
- If an error occurs, the discharge mode may not properly run. (Wait until natural discharge.)
- In particular, E 464, E364, power devices may be damaged, therefore do not use the discharge mode.
(Natural discharge until Please wait for at least 15 minutes.)
►
Block the Inverter PCB 3-phase relay after connected the power, and through compressor, DC voltage is discharging.
- INV1 and INV2 DC voltage during discharge mode are displayed alternately.
- Discharge mode Display (Rotate the three page display, as shown below.)
'K' 'A' ' ' ' ‘
DC Link Volt1 ( For example, 120[V] 0 1 2 0 display)
DCLinkVolt2 ( For example, 120[V] 0 1 2 0 display)
'K' 'A' ' ' ' ‘
DC Link Volt1 …
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Discharge is complete, the power of the Inverter PCB is being blocked, communication function is blocked, E206 will occur.
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If want operation again after complete discharge mode : Restart after K3 key to Reset or Power Reset.
How to Initiate
K1 Tact Switch 7 times~11 times
Compressor
OFF
Indoor unit
OFF
4Way Valve
OFF
Valves
Open all valves maximum
Etc.
If not turn off the vacuum mode, the start of normal operation is prohibited.
Содержание DVM S AM080FXVAGH
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Страница 204: ...PCB Diagram and Parts List 5 6 Samsung Electronics ASS YPCBMAIN HUB cont ŶDC 1 1 2 3 4 5 6 7 8 9 10 11 ...
Страница 210: ...5 12 Samsung Electronics 5 4 ASS YPCBFAN Model 1 FANchassis 1 5 2 6 3 4 ...
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