Daikin RTSQ20PY1 Service Manual page 225

SiBE31-801_C
Malfunction
code
Outdoor Unit LC
P1
P2
P4
P8
P9
PA
PE
PH
PJ
System U0
U1
U2
U3
U4
U5
U5
U7
U8
U9
UA
UC
UE
UF
UH
Centralized M1
Remote
Controller
M8
and
Schedule
Timer MA
MC
The system operates for malfunction codes indicated in black squares, however, be sure to check and repair.
Troubleshooting
Operation Inspection Unit No.
lamp display
l l
l l
l l
l l
l l
l l
l l
l l
l l
l l
k h
l l
l l
l l
l l
l l
h k
l l
l l
l l
l l
k k
l l
l l
l l
k or h l
k or h l
k or h l
k or h l
—
—
—
Malfunction contents
l
Malfunction of transmission between inverter and
control PCB
l
Inverter over-ripple protection
l
[In automatically refrigerant charge] Operation stop
in charging
l
Malfunction of inverter radiation fin temperature rise
sensor
l
[In automatically refrigerant charge] Heat exchanger
freeze prevention
l
[In automatically refrigerant charge] Completion of
automatically refrigerant charge
l
[In automatically refrigerant charge] Refrigerant
tank empty
l
[In automatically refrigerant charge] Preparation for
refrigerant tank shut
l
[In automatically refrigerant charge] Refrigerant
tank empty (slave unit)
l
Faulty field setting after replacing main PCB or
faulty combination of PCB
l
Refrigerant shortage alert
l
Reverse phase / open phase
l
Power supply insufficient or instantaneous failure
l
Check operation is not executed.
l
Malfunction of transmission between indoor and
outdoor units
l
Malfunction of transmission between remote
controller and indoor unit
h
Failure of remote controller PCB or setting during
control by remote controller
l
Malfunction of transmission between outdoor units
h
Malfunction of transmission between main and sub
remote controllers (malfunction of sub remote
controller)
l
Malfunction of transmission between indoor unit and
outdoor unit in the same system
l
Improper combination of indoor and outdoor units,
indoor units and remote controller
k
Address duplication of centralized remote controller
l
Malfunction of transmission between centralized
remote controller and indoor unit
l
Refrigerant system not set, incompatible wiring /
piping
l
Malfunction of system, refrigerant system address
undefined
l
Centralized remote controller PCB defect
Schedule timer PCB defect
l
Malfunction of transmission between optional
controllers for centralized control
l
Improper combination of optional controllers for
centralized control
l
Address duplication, improper setting
Operation lamp blinks
"Under Centralized Control" Blinks (Repeats single
blink)
"Under Centralized Control" Blinks (Repeats double
blink)
Troubleshooting by Remote Controller
k: ON h: OFF l: Blink
Page
Referred
285
288
141
290
141
141
141
141
141
291
293
295
296
299
300
302
302
303
310
311
312
316
317
320
321
323
324
325
327
328
330
333
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