Error Codes: Overview - Daikin LRMEQ3AY1 Installer And User Reference Manual

# Action
2 Select mode 1.
3 Select a malfunction.
("X×" depends on the
setting that you want
to select.)
4 Display the first
character of the error
code.
5 Display the second
character of the error
code.
6 Quit mode 1.
11.3.2

Error codes: Overview

Code Cause
E3 ▪ The stop valve of an
outdoor unit
closed.
▪ Refrigerant overcharge
E4 ▪ The stop valve of an
outdoor unit
closed.
▪ Insufficient refrigerant
LRMEQ3+4AY1
Air-cooled refrigeration condensing unit
4P442131-1 – 2016.03
Display
BS1
[1×]
BS2 Possible malfunctions:
[X×]
[1‑14] Latest malfunction:
[1‑15] 2nd last malfunction:
[1‑16] 3rd last malfunction:
BS3 Possible characters:
[1×]
E:
H:
F:
J:
L:
P:
U:
BS2 Possible characters:
[1×]
1:
2:
3:
4:
5:
6:
7:
8:
9:
A:
C:
BS1
[1×]
Solution
▪ Open the stop valve on
is left both the gas and liquid
side.
▪ Recalculate the required
amount of refrigerant and
correct the refrigerant
charge level
recovering any excessive
refrigerant with
refrigerant recovery
machine.
▪ Open the stop valve on
is left both the gas and liquid
side.
▪ Check if the additional
refrigerant charge has
been finished correctly.
Recalculate the required
amount of refrigerant and
add an adequate amount
of refrigerant.
Code Cause
E7 Fan motor malfunction
(M1F) – A2P (X106A)
(M2F) – A2P (X107A)
E9 Electronic expansion valve
malfunction
(Y1E) - A1P (X21A)
(Y3E) - A1P (X22A)
F3 ▪ The stop valve of an
outdoor
closed.
▪ Insufficient refrigerant
F6 Refrigerant overcharge
H9 Ambient temperature
sensor malfunction (R1T) -
A1P (X11A)
J3 Discharge temperature
sensor malfunction (R2T):
open circuit / short circuit -
A1P (X12A)
J5 Suction temperature sensor
malfunction
(R3T) - A1P (X12A)
(R5T) - A1P (X12A)
J6 Liquid temperature sensor
(coil) malfunction (R6T) -
A1P (X13A)
J7 Liquid temperature sensor
(after subcool HE)
malfunction (R7T) - A1P
(X13A)
J9 Gas temperature sensor
(after subcool HE)
malfunction (R4T) - A1P
(X12A)
JA High pressure sensor
by
malfunction (S1NPH): open
circuit / short circuit - A1P
a
(X17A)
JC Low pressure sensor
malfunction (S1NPL): open
circuit / short circuit - A1P
(X18A)
L4 ▪ Fin temperature
because
malfunction.
▪ Fin temperature
because of short circuit.
▪ Fin
malfunction.
11 Troubleshooting
Solution
Check connection on PCB
or actuator.
Check connection on PCB
or actuator.
▪ Open the stop valve on
unit is left both the gas and liquid
side.
▪ Check if the additional
refrigerant charge has
been finished correctly.
Recalculate the required
amount of refrigerant and
add an adequate amount
of refrigerant.
Recalculate the required
amount of refrigerant and
correct the refrigerant
charge level by recovering
any excessive refrigerant
with a refrigerant recovery
machine.
Check connection on PCB
or actuator.
Check connection on PCB
or actuator.
Check connection on PCB
or actuator.
Check connection on PCB
or actuator.
Check connection on PCB
or actuator.
Check connection on PCB
or actuator.
Check connection on PCB
or actuator.
Check connection on PCB
or actuator.
rise ▪ Remove obstacles that
of inverter block the passage of air
to the outdoor unit.
rise ▪ Check connection
PCB or actuator.
thermistor
Installer and user reference guide
on
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