Midea RSJ-15/190RDN3-D

MCAC-RTSM-2011-12 Midea Combo Type Heat Pump Water Heater Technical Manual
56
J. "EF": Clock chip error
Display
EF
Method of
malfunction
detection
Check whether the clock chip is damage.
Supposed
Causes
1. The clock chip is damage.
2. There is something wrong in the main board.
Troubleshooting
EF
Check whether the clock
chip is damage.
Continue operation
Power on again. Is “EF”
appear?
Replace the main board.
NO
YES
Replace the clock chip.
YES
NO