mundoclima MVD-22GDN1, Service Manual

Page: 23 / 24

The 2
nd
Generation DC Series VRF Indoor Units
24 201806
9 Error codes
Content Digital display output Possible causes
Mode conflict E0
Š
E1
Š
Š
Š
Š
E2
Š Temperature sensor not connected properly or has malfunctioned.
Š Damaged main PCB.
E3
E4
Fan error E6
Š Fan stuck or blocked.
Š Fan motor not connected properlyor has malfunctioned.
Š
Power supply abnormal.
Š
EEPROM mismatch E7
Š
Damaged main PCB.
EEV error Eb
Š Line loosened or broken.
Š The electronic expansion valve in stuck.
Š
Outdoor unit error Ed Š Outdoor unit error.
Water level error EE
Š
Water level float stuck.
Š
Water level switch not connected properly.
Š
Damaged main PCB.
Š
Drain pump has malfunctioned.
FE
Š
Indoor unit has not been assigned an address.
Communication error
between indoor and
outdoor units
Indoor ambient
temperature sensor
(T1) error
Indoor heat
exchanger mid-point
temperature sensor
(T2) error
Indoor heat
exchanger outlet
temperature sensor
(T2B) error
The indoor unit has
not beenassigned an
address
The indoor unit’s operating mode conflicts with that of the outdoor
units.
Communication wires between indoor and outdoor units not
connected properly.
Interference from high voltage wires or other sources of
electromagnetic radiation.
Communication wire too long.
Damaged main PCB.
Damaged main PCB.
Damaged main PCB.
Notes:
Flashing rapidly means flashing twice per second; flashing slowly means flashing once per second.
With the exception of a mode conflict error, contact your supplier or service engineer if any of the error codes listed in the following table are
displayed on the unit's display panel. If the mode conflict error is displayed and persists, contact your supplier or service engineer. These errors
should only be investigated by a professional technician. The descriptions are provided in this manual for reference only.