Error Contents - Friedrich MW18C3F Service Manual

ERROR CONTENTS

Model : MW18C3F
Error
Serial signal error
Indoor unit thermistor error
Outdoor unit thermistor error
Indoor unit control error
Outdoor unit control error
Indoor fan motor error
Refrigerant cycle error
Optional function error
Model error
2006.03.06
Display
Operation Error
Timer LED
LED
2 flash Serial signal (reverse) error, at operation start up
3 flash Serial signal (reverse) error, during oeration
Normal
4 flash Serial signal (forward) error, at operation start up
5 flash Serial signal (forward) error, during operation
2 flash
Indoor temperature thermistor open / short
2 flash
Heat exchanger middle thermistor open / short
3 flash
2 flash
Discharge thermistor open / short
3 flash 3 flash Heat exchanger thermistor open
4 flash Outdoor temperature thermistor open / short
2 flash
Forced automatic SW welded
3 flash
Main relay welded
4 flash
4 flash
Power interruption error
7 flash
VDD permanent stop protection
8 flash
reverse VDD permanent stop protection
2 flash
Current trip error
CT abnormal
3 flash
5 flash
5 flash
Compressor location detection error
6 flash
Outdoor unit fan drive system abnormal
2 flash Abnormal lock
6 flash
3 flash Abnormal rotation
2 flash
Discharge Temperature abnormal
7 flash
3 flash
Cooling high pressure abnormal rise
8 flash 4 flash PFC circuit error
Blinking Blinking Model error
10