Airwell AW-FWDB018-N91, Service Manual

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FWDB Low temperature floor ceiling-Technical Manual R32-50Hz
9 Troubleshooting
9.1 18K outdoor unit
Error code display
Error
code
Description
Error
code
Description
E01
Communication fault between IDU
and ODU
P0C Current protection
E02
Zero cross detection fault of IDU
P1x Bus voltage protection
E03
stall fault of indoor fan
P21 Low temperature dehumidication fault
E04
T2B (indoor coil outlet temp.) sensor
fault
P22
High and low temp. protection of
evaporator
E08 Mode conflict
P23
High temp. protection of condenser
E09 ODU EEPROM error P24
High and low temp. protection of
environment
E0E IDU EEPROM error P25
High discharge temperature of
compressor
E11
IDU T1 (room temperature) sensor
fault
P28
Abnormal discharge in commodity
inspection mode
(compressor reversal)
E12
IDU T2 (indoor coil middle temp.)
sensor fault
P29
T3 abnormal in commodity inspection
heating mode
(System
exception, 4-way valve
disconnected)
E13
ODU T3 (outdoor coil outlet temp.)
sensor fault
P30 High pressure protection
E14 ODU T4 (ambient temp.) sensor fault P31 Low pressure protection
E15
ODU discharge temp. sensor fault
H1x Compressor fault
E16
Module temp. sensor fault
H3x PFC fault
E17 Suction temp. sensor fault L01
Lower frequency because of voltage
limit
E18 TZA sensor fault L02
Lower frequency because of high or low
temp. limit of evaporator
E19 TZB sensor fault L03
Lower frequency because of high temp.
limit of condenser
E2x Fan motor fault L05
Lower frequency because of high
discharge temp. of compressor
L06
Lower frequency because of module
temperature limit
L0C
Lower frequency because of current
limit
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