YMGI TTWA Series, Installation Instructions & User Manual

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YMGI
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Your Modern Green Idea
34
ERROR CODES
Error code Content of defect
E2 Room temperature sensor loose or broken
E3 Indoor coil temperature sensor loose or broken
E4
1. Air outlet temperature sensor loose or broken
2. Air outlet over heating fault in Electric Heat Mode
E5 Outdoor coil temperature sensor loose or broken
E8 Defrosting in Cool Mode or over heating protection in Heat pump Mode
E9 High pressure protection in Cool Mode
SOLUTIONS:
For E2, E3, E5, chec
k the sensors’ plug, make sure that they are inserted firmly. Or replace the related
sensor.
E4
Follow the 3 steps for repairing:
1. Check whether there is any obstacle in front of the unit that block the room return air flow, if so,
remove the obstacle.
2. Check the indoor fan, make sure it is running properly, if not, repair the fan.
3. Check the related sensor plug, make sure that it is inserted firmly, or replace the sensor.
E8 -If the ambient temperature is too high to run heat pump mode, or it is too low to run cooling mode, it may
cause the E8 error. Otherwise, follow the same steps as E4 to solve the issue.
E9 -If the outdoor ambient temperature is too high to run cooling mode, it may cause the E9 error, otherwise,
follow the 3 steps for repairing:
1. Check whether there is any obstacle blocks the outdoor unit air flow, if so, remove the obstacle.
2. Check the outdoor fan, make sure it is running properly, if not, repair the fan.
3. Check the outdoor coil sensor plug, make sure that it is inserted firmly. Or replace the sensor.