AUX air conditioner service manual
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APPENDIX 1 Introduction to the fault display CODE of AUX air conditioner
1. 70S .100S.120S.45T.50T.60T45TA.50TA.60TA.70T1,when the faults happen, the LCD panel
displays “fault” and the corresponding code.
⑴ The fault of the indoor plastic temperature sensor:
System turns off, the panel displays “E1”.
⑵ The fault of the outdoor tube temperature sensor on the indoor panel:
System doesn’t turns off, the panel displays “E2”.
⑶ The fault of the indoor copper tube temperature sensor:System doesn’t turns off, the panel
displays “E3” and keep on working as per the mode without indoor copper tube temperature
sensor.
⑷ When the outdoor panel available,the communication fault:
System turns off; the panel displays“E4”.
⑸ When the outdoor panel available,the outdoor compressor under self protection(overloading
protection):
System turns off, the panel displays “E5” (The fault may be the low on-off voltage protection,
overloading protection or the reacting motion of the overloading relay).
⑹ When the outdoor panel available,the outdoor three phases’ self protection against failure of
phase:
System turns off,the panel displays “E6”,(The fault may be the three phases are in reverse).
⑺ When the outdoor panel available, over-current protection:
System turns off,the panel displays “E7”.
⑻ When the outdoor panel available,the fault of the temperature sensor to the exhaust pipe of the
compressor:
System doesn’t turns off, the panel displays “E8”. (The fault may be the unsteadiness of the joint &
plug or the fault of the outdoor computer board)
⑼ When the outdoor panel available,the temperature protection of the discharge pipe of the
compressor:
System turns off; the panel displays “E9”.
2、ASW-H18A4/TBPModel transducer faults display
Indoor unit faults display:
⑴ Fault 11 The indoor ambiance temperature sensor is open circuit or short circuit.
⑵ Fault 12 The tube temperature sensor of the indoor heat exchanger is open circuit or short
circuit.
⑶ Fault 13 Indoor heat exchanger anti-freezing protections.
⑷ Fault 14 Indoor heat exchanger overheating protection.
⑸ Fault 15 Indoor communication fault.
⑹ Fault 16 Indoor electric source’s instant off
⑺ Fault 17 Indoor over-current protection
Outdoor faults display:
⑴ Fault 21 The outdoor ambiance temperature sensor is open circuit or short circuit.
⑵ Fault 22 The tube temperature sensor of the outdoor heat exchanger is open circuit or
short circuit.
⑶ Fault 23 The temperature sensor of the air vent of the outdoor compressor is open circuit or