Diagnosis And Solution - North American HVAC MSC-28CRDN1-MN15W Service Manual

9.2 Diagnosis and Solution

9.2.1 EEPROM parameter error diagnosis and solution(E0)
Shut off the power supply and
turn it on 5 seconds later. Is it
still displaying the error code?
Yes
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
Replace the indoor main
PCB.
EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed
voltage.
No
Correct the connection.
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