Electra ELAU-VBZ214-H11, Service Manual, Page: 59 / 73

TROUBLESHOOTING
13-6 Service Manual – VBZ DCI 1-A.1 GB
If Indoor unit power LED is unlighted, power down the system and check the fuse of the Indoor
unit. If the fuse is OK replace the Indoor unit controller. If the fuse has blown, replace the fuse
and power up again.
Checking Power Input procedure for the Outdoor unit is the same as with the Indoor unit.
13.2.3 Checking the Outdoor Fan Motor.
Enter Test Mode (where the OFAN speed is high)
Check the voltage between two pins( Hi and N ) of connector Controller OFAN, normal voltage
is 220VAC.
13.2.4 Checking the Compressor.
The compressor is brushless permanence magnetic DC motor. Three coil resistance is
same. Check the resistance between three poles. The normal value should is
~0.452ohm.(Model 14) and ~0.88ohm(Model 18/30) Pay attention U,V, W are respective to
connect to RED,YELLOW,BLUE wires.
13.2.5 Checking the Reverse Valve (RV).
Running in heating mode, check the voltage between two pins of reverse valve connector,
normal voltage is 220VAC.