Heat Controller A-DVC09SD-0, Service Manual

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DVC/DVH Inverter Mini-Split Heat Controller
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10.3 Diagnosis and Solution
10.3.1 EEPROM Parameter Error Diagnosis and Solution (E0/F4)
Error Code
E0/F4
Malfunction Main PCB chip is not receiving feedback from EEPROM chip
(Indoor/Outdoor)
Possible Causes
●
Installation error
●
Faulty PCB
Trouble shooting:
If the EEPROM chip
is welded on main
PCB, replace the
main PCB directly.
Otherwise, check
whether the
EEPROM chip
plugged in main PCB
well?
Yes
No
Yes
Correct the connection.
Replace the main PCB.
Shut off the power supply and
turn it on 5 seconds later. Is it
still displaying the error code?
EEPROM: Has a read-only memory, whose contents can be erased and reprogrammed using a pulsed
voltage. For the location of EEPROM chip, please refer to the representative photos below.
Indoor PCB Outdoor PCB
If the EERPROM chip
is welded on main
PCB, replace the entire
main PCB. Otherwise,
check whether the
EEPROM chip is prop-
erly plugged in main
PCB well?
No further action. No