Heat Controller VMC30SB-1/VMH30SB-1 用户手册

Only for training and service purposes

Turn off the main power and wait until LED on outdoor PCB is off.

Turn on the main power again.

"Beeping" sound is from the indoor unit?

Flashing LED mounted on the outdoor PCB?

• Primarily, the operating condi-

tion of Micom is O.K.

• Check CN-DISP1

Check the voltage of power(AC 208~230V, 60Hz).

• The voltage of main power.
• The voltage applied to the unit.
• The connecting method of Indoor/Outdoor connecting cable (each color)
• The PCB Ass'y
(Fuse,Noise Filter, Power Module(SMPS), IC01D,IC04D)

NO

YES

The operation check of the P.C.B. Ass'y

1) The input voltage of Power

Module(SMPS)

2) The output voltage of Power

Module (SMPS)

3) IC01D(LD1085), IC04D(7805)

: DC 220V~390V

: 15V ±10%

: DC 5V

Replace the P.C.B.