Service Diagnosis
4
8
Check the indoor PCB: Only indoor
charged measure the voltage
between 3 and 4 of IC6 on the
indoor mainboard with a universal
meter. And measure the voltage
between CN23(S) and CN52 (L) with
a universal meter.
If the voltage is a constant value of
0V DC to 5V DC .Or the voltage
between communication line (red)
and N (white line) is not close
to18V DC when only indoor
charged.
YES
The indoor PCB is damaged; replace
it with a new one.
NO
Test the outdoor power is
supply 230VAC with a
universal meter when indoor
and outdoor are charged.
NO
Check the cable
between outdoor
and power
YES
Measure the voltage Between
3 and 4 of IC5 on the Outdoor
mainboard with a universal
meter. The voltage is a
constant value of 0V DC to 5V
DC
LED2 light
The outdoor PCB is
damaged. Replace
it with a new one.
NO
The outdoor PCB is
well, and then
check the cable
YES
NO
YES
Содержание 1U50S2SJ2FA-1
Страница 11: ...Piping diagrams Domestic air conditioner 4 Piping diagrams 9 EEV EEV...
Страница 12: ...Operation range 5 Operation range 60 43 40 20 0 20 20 40 21 35 15 20 25 27 10 Domestic air conditioner...
Страница 31: ...Dimensional drawings 8 Dimensional drawings 9 Center of gravity 29 Domestic air conditioner...
Страница 56: ...Performance and curves diagrams 11 3 Cooling discharge pressure curves Domestic air conditioner 54...
Страница 57: ...Performance and curves diagrams 11 4 Cooling suction pressure curves 55 Domestic air conditioner...
Страница 58: ...Performance and curves diagrams 11 5 Heating capacity temperature curves 56 Domestic air conditioner...
Страница 60: ...Performance and curves diagrams 11 7 Heating discharge pressure curves 58 Domestic air conditioner...
Страница 61: ...Performance and curves diagrams 11 8 Heating suction pressure curves 59 Domestic air conditioner...
Страница 63: ...61 Do C omestic air ircuit Diagra conditioner ams r...
Страница 64: ...62 Do C omestic air ircuit Diagra conditioner ams r 12 2 Module board circuit diagram...
Страница 67: ...6 5 Domestic air conditioner Step Procedure Points Remove the fixting screws then lift the electrical box...
Страница 74: ...72 Domestic air conditioner Step Procedure Points Remove the fixing screw then lift the valve set...