Diagnosis And Solution - York Pyrenees YM9FXC030BAA FX Series Service Manual

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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.

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