Daikin RZQ Series FCQ20EVA Service Manual page 145

SiME281501E
Troubleshooting
Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged.
connectors of the
inverter PCB (A2P) and control
PCB (A1P), all securely
Is the type of the
compressor has insulation
resistance of not more than
motor has insulation
resistance of not more
micro-computer normal
monitor (green) of the control
PCB (A1P) is blinking.
normal monitor (green) of
the inverter PCB (A2P) is
Error is displayed again.
Service Diagnosis
Are the
NO
connected?
YES
NO
inverter PCB
correct?
YES
The INV.
YES
100kΩ.
NO
The fan
YES
than 1MΩ.
NO
The
NO
YES
The
micro-computer
NO
blinking.
YES
YES
NO
Troubleshooting by Remote Controller
Properly connect the connectors.
Replace it with a correct PCB.
Replace the compressor (M1C).
Replace the fan motor.
LC
Not the " " error.
Check the error code again.
Replace the inverter PCB (A2P).
∗ If the spare PCB has significant
damage, the compressor is
probably get defective. In this
case, carry out inspections on
the compressor again.
Replace the control PCB (A1P).
Continue the operation.
(It is supposed that the error
results from causes such as
instantaneous power failure.)
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