Friedrich Air Conditioners Error Detection

Models Indoor Units MW09Y3H MW12Y3H Outdoor Units MR09Y3H MR12Y3H ERROR DETECTION Error = Serial signal error Indoor unit LED Operation LED = Off Timer LED = 2 flash Coil dry LED = off Wired remote control = 01 Error = Serial signal (reverse) error, at operation start up Error = Serial signal error Indoor unit LED Operation LED = Off Timer LED = 3 flash Coil dry LED = off Wired remote control = 01 Error = Serial signal (reverse) error, during operation Error = Serial signal error Indoor unit LED Operation LED = Off Timer LED = 4 flash Coil dry LED = off Wired remote control = 13 Error = Serial signal (forward) error, at operation start up Error = Serial signal error Indoor unit LED Operation LED = Off Timer LED = 5 flash Coil dry LED = off Wired remote control = 13 Error = Serial signal (forward) error, during operation Error = Serial signal error Indoor unit LED Operation LED = Off Timer LED = 8 flash Coil dry LED = off Wired remote control = 00 Error = Wired remote control error Error = Indoor unit thermistor error Indoor unit LED Operation LED = 2 flash Timer LED = 2 flash Coil dry LED = Off Wired remote control = 02 Error = Indoor air thermistor error Error = Indoor unit thermistor error Indoor unit LED Operation LED = 2 flash Timer LED = 3 flash Coil dry LED = off Wired remote control = 04 Error = Heat exchanger middle thermistor error Error = Outdoor unit thermistor error Indoor unit LED Operation LED = 3 flash Timer LED = 2 flash Coil dry LED = off Wired remote control = 0C Error = Discharge pipe thermistor error Error = Outdoor unit thermistor error Indoor unit LED Operation LED = 3 flash Timer LED = 3 flash Coil dry LED = off Wired remote control = 06 Error = Heat exchanger thermistor error Error = Outdoor unit thermistor error Indoor unit LED Operation LED = 3 flash Timer LED = 4 flash Coil dry LED = off Wired remote control = 0A Error = Outdoor air thermistor error Error = Indoor unit control error Indoor unit LED Operation LED = 4 flash Timer LED = 2 flash Coil dry LED = off Wired remote control = 20 Error = Manual auto button welded Error = Outdoor unit control error Indoor unit LED Operation LED = 5 flash Timer LED = 2 flash Coil dry LED = off Wired remote control = 17 Error = Current trip error Error = Outdoor unit control error Indoor unit LED Operation LED = 5 flash Timer LED = 3 flash Coil dry LED = off Wired remote control = 18 Error = CT abnormal Error = Outdoor unit control error Indoor unit LED Operation LED = 5 flash Timer LED = 5 flash Coil dry LED = off Wired remote control = 1A Error = Compressor location detection error Error = Outdoor unit control error Indoor unit LED Operation LED = 5 flash Timer LED = 6 flash Coil dry LED = off Wired remote control = 1B Error = Outdoor unit fan drive system abnormal Error = Indoor fan motor error Indoor unit LED Operation LED = 6 flash Timer LED = 2 flash Coil dry LED = off Wired remote control = 12 Error = Abnormal lock (upper fan motor) Error = Indoor fan motor error Indoor unit LED Operation LED = 6 flash Timer LED = 3 flash Coil dry LED = off Wired remote control = 12 Error = Abnormal rotation (upper fan motor) Error = Refrigerant cycle error Indoor unit LED Operation LED = 7 flash Timer LED = 2 flash Coil dry LED = off Wired remote control = 0F Error = Discharge temperature abnormal Error = Refrigerant cycle error Indoor unit LED Operation LED = 7 flash Timer LED = 3 flash Coil dry LED = off Wired remote control = 24 Error = Cooling high pressure abnormal rise Error = Optional function error Indoor unit LED Operation LED = 8 flash Timer LED = 2 flash Coil dry LED = off Wired remote control = 19 Error = Active filter abnormal (first time) Error = Optional function error Indoor unit LED Operation LED = 8 flash Timer LED = 3 flash Coil dry LED = off Wired remote control = 19 Error = Active filter abnormal (second time) Error = Optional function error Indoor unit LED Operation LED = 8 flash Timer LED = 4 flash Coil dry LED = off Wired remote control = 25 Error = PFC circuit error Error = Model information error Indoor unit LED Operation LED = 0.1 sec on/off Timer LED = 0.1 sec on/off Coil dry LED = 0.1 sec on/off Wired remote control = 11 Error = Model information error Indoor unit MS36Y3F Outdoor unit MR36Y3F ERROR CONTENTS (Indoor unit) Operation can be checked by lighting and flashing of the display section OPERATION, TIMER, and VERTICAL SWING lamps. Perform judgment in accordance with the following. TEST RUNNING When the air conditioner is run by pressing the remote control unit test run button, the OPERATION, TIMER, and VERTICAL SWING lamps flash slowly at the same time. ERROR The OPERATION, TIMER, and VERTICAL SWING lamps operate as follows according to the error contents. OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = ○ SWING lamp (ORANGE) = X Error contents = Indoor EEPROM abnormal OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = ○ SWING lamp (ORANGE) = ○ Error contents = Outdoor EEPROM abnormal OPERATION lamp (RED) = (2 times) ● TIMER lamp (GREEN) = ○ SWING lamp (ORANGE) = X Error contents = Indoor room temperature sensor open OPERATION lamp (RED) = (2 times) ● TIMER lamp (GREEN) = ○ SWING lamp (ORANGE) = ○ Error contents = Indoor room temperature sensor shortcircuited OPERATION lamp (RED) = (3 times) ● TIMER lamp (GREEN) = ○ SWING lamp (ORANGE) = X Error contents = Indoor heat exchanger temperature sensor open OPERATION lamp (RED) = (3 times) ● TIMER lamp (GREEN) = ○ SWING lamp (ORANGE) = ○ Error contents = Indoor heat exchanger temperature sensor shortcircuited OPERATION lamp (RED) = (4 times) ● TIMER lamp (GREEN) = ○ SWING lamp (ORANGE) = X Error contents = Float switch operated OPERATION lamp (RED) = (5 times) ● TIMER lamp (GREEN) = ○ SWING lamp (ORANGE) = X Error contents = Indoor signal abnormal OPERATION lamp (RED) = (6 times) ● TIMER lamp (GREEN) = ○ SWING lamp (ORANGE) = X Error contents = Indoor fan abnormal OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = (2 times) ● SWING lamp (ORANGE) = X Error contents = Outdoor power source connection abnormal OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = (3 times) ● SWING lamp (ORANGE) = X Error contents = Outdoor heat exchanger temperature sensor open OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = (3 times) ● SWING lamp (ORANGE) = ○ Error contents = Outdoor heat exchanger temperature sensor shortcircuited OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = (4 times) ● SWING lamp (ORANGE) = X Error contents = Outdoor temperature sensor open OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = (4 times) ● SWING lamp (ORANGE) = ○ Error contents = Outdoor temperature sensor shortcircuited OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = (5 times) ● SWING lamp (ORANGE) = X Error contents = Outdoor discharge pipe temperature sensor or compressor temperature sensor open OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = (5 times) ● SWING lamp (ORANGE) = ○ Error contents = Outdoor discharge pipe temperature sensor or compressor temperature sensor shortcircuited OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = (6 times) ● SWING lamp (ORANGE) = X Error contents = Outdoor high pressure abnormal OPERATION lamp (RED) = ○ TIMER lamp (GREEN) = (7 times) ● SWING lamp (ORANGE) = X Error contents = Outdoor discharge pipe temperature or compressor temperature sensor abnormal ○ = 0.1s ON/0.1s OFF (flash) ● = 0.5s ON/0.5s OFF (flash) X = OFF 1. Make a TEST RUN in accordance with the installation instruction sheet for the indoor unit 2. OUTDOOR UNIT LEDS When a malfunction occurs in the outdoor unit, the LED on the circuit board lights to indicate the error. Refer to the following table for the description of each error according to the LED. LED = 1flash Error Contents = Communication error (Indoor unit - Outdoor unit) LED = 2 flash Error Contents = Discharg pipe temperature sensor LED = 3 flash Error Contents = Outdoor heat exchanger temperature sensor LED = 4 flash Error Contents = Outdoor temperature sensor LED = 7 flash Error Contents = Compressor temperature sensor LED = 8 flash Error Contents = Heat sink temperature sensor LED = 9 flash Error Contents = Pressure switch abnormal LED = 12 flash Error Contents = IPM error LED = 13 flash Error Contents = Compressor rotor position cannot detect LED = 14 flash Error Contents = Compressor cannot operate LED = 15 flash Error Contents = Outdoor fan abnormal (upper fan) LED = 16 flash Error Contents = Outdoor fan abnormal (lower fan) LED = lighting Error Contents = No error
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