Rotenso J100Wi, Service Manual

Page: 109 / 132

LCAC R32 Series
109 Service manual
4.4.10 P1 malfunction
Malfunction conditions An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit.
Possible causes
• Abnormal power supply
• Wiring mistake
• Faulty bridge rectifier
• Faulty IPM board
Voltage protection
P1 display
Check whether the power
voltage is normal.
Measure whether outdoor
terminal voltage is normal?
Restart the uniit when the power
supplly gets normall
No
Yes
No
Reconnect iit welll
Yes
Yes
No
Repllace the IPM board, If the IPM board
and maiin board iis iin a board, repllace the
outdoor maiin PCB
Yes
Repllace the PFC modulle(If has)
No
Yes
Measure whether the voltage
between L and N iis normall ？
Yes
Measure whether the volltage
of bridge rectifier is normal?
Yes
No
No
Measure whether the volltage
between P and N iis normall
refer to the Appendiix 3 ？
Repllace the briidge
rectifier
No
Check whether
bridge rectifier is
normal
Check the wiiriing of
reactor or iinductance
Reconnect the
wiring
No
Check whether reactor
or iinductance iis normall
Yes
Replace reactor or
inductance
No
Check the wiiriing of
power wiires welll or
correctly
Reconnect iit welll
Check the wiring of
Land N wel lor
correctly
Reconnect iit welll
Check the wiring of
bridge rectifier well
or correctly
PART 6. TROUBLESHOOTING