Zanussi ZS12V70CCHI Service Manual page 30

Check the compressor cable
connections on the main board.
Are there errors in connections? Are
there any disconnections, ruptures,
looseness etc. in the sockets?
Error Code
Indoor unit pipe sensor error
Display shows ER 03 error when the
air conditioner is switched on via the
remote control. (indoor unit pipe unit
pipe sensor error)
NOTE: Indoor unit pipe sensor ensures anti-frost in the indoor unit and the operational order of the indoor unit fan motor.
Sensor errors given above contain precision. NTS resistances within the sensors are either short circuited or open circuited. While
these situations are rarely observed in inverter products, the indoor unit sensor group should be replaced if these errors are seen.
Error Code
Indoor unit fan motor error
It gives ER 04 error
(indoor unit fan motor error)
Slowly turn the cross fan manually
or with an appropriate tool. Is there
friction, jamming or strain?
Are the fan motor cables or sockets
properly connected to the control
board?
Measure the fan motor capacitor
on the control board; is it correct?
9/12K capacitor 1.5 µF 450 V
18/24K capacitor 1.2 µF 450 V
If it is AC fan motor, measure the coils;
is there a short-circuit or open-circuit?
If it is BLDC fan motor, apply the BLDC
control steps in the user manual. Did
you detect a problem at the end of the
controls?
NO
(7 Segment)
ER 03
(7 Segment)
ER 04
YES
YES
YES
Replace the indoor unit fan motor
NO
Replace the outdoor unit control board.
Outdoor unit led
Replace the indoor unit sensor group
Outdoor unit led
There is mechanical jamming in the
YES
cross fan. Resolve the problem by
correcting with appropriate tools and
NO
Check the socket connections. If there
is any impropriety in connections,
NO
Replace the indoor unit control board
NO
Replace the indoor unit control board
30
procedures.
correct it.