![background image](http://html1.mh-extra.com/html/daikin/lxe10e-a4/lxe10e-a4_service-manual_2460254141.webp)
6-10
Note :"Same as normal operation" means that it is same as judgement, countermeasure and check method at
normal operation. (Refer to Page 6-1
~
6-9)
Step
Content
Alarm
code
Conclusion
Possible cause
Check method
P22
Check on
discharge gas by-
pass solenoid
valve (BSV)
J221
BSV does not
open.
BSV coil malfunction
Check on BSV coil, wiring
and terminals.
P24
Check on defrosting
solenoid valve (DSV)
J241
DSV does not
open.
DSV coil failure
Check on DSV coil,
wiring and terminals.
P26
Standard Pull
down operation
No
indication
P28
Evaporator fan
reverse-rotation
check
J281
Evaporator fan
rotates in reverse
direction.
Wrong wiring of evaporator fan motor.
Magnetic contactor (EFH/L) and wiring
malfunction.
Check wiring evaporator fan motor.
Check magnetic contactor (EFH/L)
and wiring.
P29
Electronic
expansion valve
check
J291
Pump down time
is too long.
Electronic expansion valve
wiring malfunction
Check knocking sound of the
coil Disconnect and connect
the connector of the coil
P30
ISV opening or
closing check
J301
ISV does not
open.
ISV coil malfunction
Check on ISV coil, wiring
and terminals.
P32
HSV opening or
closing check
J321
HSV does not
open.
HSV coil malfunction
Check on HSV coil,
wiring and terminals.
P50
Pull-down cooling
capacity
J501
Out of ambient
temperature
condition
No unit malfunction
Ambient temperature is lower than -10
˚C
Ambient temperature is higher than 43
˚C
Check ambient
temperature.
P60
0˚C control
No
indication
No judgement
P70
Defrosting
operation check
J701
Out of starting
condition. (EOS
is 20˚C or more.)
Wrong installation of EOS.
Check the installation of
EOS.
P90
–18
˚C
control
No
indication
No judgement
P80
Pull-down cooling
capacity
J801
Pull down time is
too long.
Same as normal operation
Same as normal
operation
BSV malfunction
Check on outlet piping
temperature of BSV
DSV malfunction
Check on outlet piping
temperature of DSV
Electronic expansion valve coil
burn out.
Check on knocking
sound of coil.
Leakage of hot gas by-pass
solenoid valve
Touch the outlet pipe of
the solenoid valve.
Leakage of defrosting solenoid
valve
Touch the outlet pipe of
the solenoid valve.
Leakage of discharge gas by-
pass solenoid valve
Touch the outlet pipe of
the solenoid valve.
ISV malfunction
Check on capillary tube
temperature on ISV outlet.
HSV malfunction
Check on outlet piping
temperature of HSV
J502
Pull down time is
too long.
Same as normal operation
Same as normal
operation
Leakage of hot gas solenoid
valve
Touch the outlet pipe of
the solenoid valve.
J702
Defrost time is
too long.
Wrong installation of EOS.
Check the installation of EOS.
EOS malfunction.
Check EOS.
https://daikin-p.ru