Daikin LXE10E-A Service Manual page 160

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Step Content
P22 Check on
discharge gas by-
pass solenoid
valve (BSV)
P24 Check on defrosting
solenoid valve (DSV)
P26 Standard Pull
down operation
P28 Check on suction
modulating valve
(SMV)
(Open SMV to 3%)
P29 Electronic
expansion valve
check
P30 ISV opening or
closing check
P32 HSV opening or
closing check
RSV opening or
closing check
P50 Pull-down cooling
capacity
P60 0˚C control
P70 Defrosting
operation check
P80 Pull-down cooling
capacity
P90 ˚C
–18 control
Note :※"Same as normal operation" means that it is same as judgement, countermeasure and check method at
normal operation. (Refer to from Page 6-1 to 6-17)
Alarm
Conclusion
code
J221 BSV does not
open.
J241 DSV does not
open.
No
indication
J281 (LPT : decrease
20kPa)
J291 Pump down time
is too long.
J301 ISV does not
open.
J321 HSV does not
open.
J322 RSV does not
open.
J501 Out of ambient
temperature
condition
J502 Pull down time is
too long.
No No judgement
indication
J701 Out of starting
condition. (EOS
is 20˚C or more.)
J702 Defrost time is
too long.
J801 Pull down time is
too long.
No No judgement
indication
Possible cause
BSV coil malfunction
BSV malfunction
DSV coil failure
DSV malfunction
SMV coil malfunction
Electronic expansion valve
wiring malfunction
Electronic expansion valve coil
burn out.
Leakage of hot gas by-pass
solenoid valve
Leakage of defrosting solenoid
valve
Leakage of discharge gas by-
pass solenoid valve
ISV coil malfunction
ISV malfunction
HSV coil malfunction
RSV coil malfunction
No unit malfunction
Ambient temperature is lower than -10
Ambient temperature is higher than 43
Same as normal operation ※
Wrong installation of EOS.
Leakage of hot gas solenoid
valve
Wrong installation of EOS.
EOS malfunction.
Same as normal operation ※
6-18
Check method
Check on BSV coil, wiring
and terminals.
Check on outlet piping
temperature of BSV
Check on DSV coil,
wiring and terminals.
Check on outlet piping
temperature of DSV
Refer to section 4.2.5.
Check appearance.
(Replace coil bracket)
Check knocking sound of the coil
Disconnect and connect the
connector of the coil.
Check on knocking
sound of coil.
Touch the outlet pipe of
the solenoid valve.
Touch the outlet pipe of
the solenoid valve.
Touch the outlet pipe of
the solenoid valve.
Check on ISV coil, wiring
and terminals.
Check on capillary tube
temperature on ISV outlet.
Check on HSV coil,
wiring and terminals.
Check on outlet piping
temperature of RSV
Check ambient
˚C temperature.
˚C
Same as normal
operation ※
Check the installation of
EOS.
Touch the outlet pipe of
the solenoid valve.
Check the installation of EOS.
Check EOS.
Same as normal
operation ※