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12-7
TROUBLESHOOTING
SM CN 1-E.1 GB
12.5.4 CheCNing
the
Compressor.
The compressor is brushless permanence magnetic DC motor. Three coil resistance is same.
CheCN the resistance between three poles. The normal value should be below 0.5 ohm
(TBD).
12.5.5 CheCNing
the
Reverse
Valve
(RV).
Running in heating mode, cheCN the voltage between two pins of reverse valve connector,
normal voltage is 220VAC.
12.5.6
CheCNing the electrical expansion valve (EEV).
The EEV has two parts, drive part and valve. The drive part is a step motor; it is ringed on the
valve. CheCN the drive voltage (12VDC). When Outdoor unit is power on, EEV shall run and
have cliCN and vibration.
12.6
Precaution, Advise and Notice Items
12.6.1
High voltage in Outdoor unit controller.
Whole controller, including the wires that are connected to the Outdoor unit controller may
have the potential hazard voltage when power is on. Touching the Outdoor unit controller may
cause an electrical shoCN.
Advise:
Don’t touch the naked lead wire and don’t insert finger, conductor or anything else into
the controller when power is on.
12.6.2 Charged
Capacitors
Three large-capacity electrolytic capacitors are used in the Outdoor unit controller. Therefore,
charging voltage (380VDC) remains after power down. Discharging takes about four minutes
after power is off. Touching the Outdoor unit controller before discharging may cause an
electrical shoCN.
12.6.3 Additional
advises
•
When disassemble the controller or the front panel, turn off the power supply.
•
When connecting or disconnecting the connectors on the PCB, hold the whole housing,
don’t pull the wire.
•
There are sharp fringes and sting on shell. Use gloves when disassemble the A/C units.
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CONTENT
Содержание CN 25 DCI
Страница 15: ...4 2 OUTLINE DIMENSIONS SM CN 1 E 1 GB 4 2 Outdoor Unit DCI 50 4 3 Outdoor Unit DCI 60 CONTENT ...
Страница 16: ...4 3 OUTLINE DIMENSIONS SM CN 1 E 1 GB 4 4 Outdoor Unit DCI 72Z CONTENT ...
Страница 44: ...8 1 WIRING DIAGRAMS SM CN 1 E 1 GB 8 WIRING DIAGRAMS 8 1 CN 25 35 50 60 70 DCI CONTENT ...
Страница 90: ...13 10 EXPLODED VIEWS AND SPARE PARTS LISTS SM CN 1 E 1 GB 13 9 Outdoor Unit ONG3 50 DCI CONTENT ...
Страница 92: ...13 12 EXPLODED VIEWS AND SPARE PARTS LISTS SM CN 1 E 1 GB 13 11 Outdoor Unit DCI 60 CONTENT ...
Страница 94: ...13 14 EXPLODED VIEWS AND SPARE PARTS LISTS SM CN 1 E 1 GB 13 13 Outdoor Unit DCI 72Z CONTENT ...