ERROR CODES
DESCRIPTION
RECOVERY OR
NOT
PROBLEM POSSIBLE
REASONS
H4
Low pressure switch
³/36´IDLOXUH
YES
System pressure lower
than low pressure switch
limit
Low pressure switch failure
Instantaneous power-off
Stop valve closed
In cooling mode indoor unit
EXV close or block
In heating mode outdoor
unit EXV close or block
In heating mode outdoor
unit fan stop
In heating mode outdoor
unit air outlet block
E1
4 way valve protection
YES
4 way valve block
Outdoor unit PCB failure
E3
DC inverter discharge
WHPSHUDWXUH³7G´WRR
high shutdown
protection
NO
System less refrigerant
DC inverter compressor
failure
Compressor air return filtre
block
EXV open degree is samall
or EXV block
Gas pipe stop valve closed
Liquid pipe stop valve
closed
System exhaust sensor
failure
Outdoor unit PCB failure
E8
Coil Center temperature
VHQVRU³7FP´WRR
high
shutdown protection
YES
System over refrigerant
EXV open degree is small
or EXV block
System exhaust sensor
failure
Outdoor unit PCB failure
J2
The communication
between outdoor unit
and indoor unit failure
YES
The communication wire
between indoor and
outdoor units
disconnected
,
short circuit
or Connected incorrectly
Indoor unit power main
PCB failure
J3
The communication
between PCB and INV
module failure
YES
The connection between
driving module and main
PCB failure
The communication part of
outdoor unit control PCB
failure
Frequency driving board
failure
Compressor failure
95
Summary of Contents for ALCA-HA 18K
Page 2: ... ES PT DE EN 3 28 53 75 2 ...
Page 24: ...24 Este botón no tiene función con unidades de cassette ...
Page 27: ...9 3 FUNCIONAMIENTO 9 4 CAMBIO DE BATERÍAS 27 ...
Page 103: ...9 3 OPERATION 9 4 CHANGING THE BATTERIES 103 ...
Page 104: ...C PROVENZA 392 P2 08025 BARCELONA SPAIN 34 93 446 27 80 ...