Diagnosis And Solution - Vivax ACP-09CH25AERO Service Manual

8.2 Diagnosis and Solution

8.2.1 EEPROM parameter error diagnosis and solution
Power off, then restart the
unit 2 minutes later.
Yes
Replace the indoor/outdoor
main PCB.
EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed voltage.
8.2.2 Zero crossing detection error diagnosis and solution
Power off, then restart the
unit 2 minutes later
Yes
Indoor main PCB is
defective. Replace indoor
main PCB.
31