Daikin LRMEQ3BY1 Service Manual page 106

Troubleshooting
Troubleshooting
104
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
NO
Is the first time for the
compressor to start after
installation?
YES
Is a proper amount
of refrigerant
charged?
YES
Is the stop
valve open?
YES
Refrigerant is
slugging. (No power
is applied for a period
of not less than 6
hours.)
NO
Is the insulation
resistance of compressor
maintained at not less
than 100kΩ?
YES
Is the compressor
lead wire
disconnected?
NO
Refrigerant is
slugging. (No power
is applied for a period
of not less than 6
hours.)
YES
Is the insulation
resistance of compressor
maintained at not less
than 100kΩ?
YES
There is a
broken wire in
the compressor.
NO
(P.115)
Check4
Is the power
transistor
normal?
YES
NO
NO
YES
NO
YES
NO
NO
YES
NO
Air Cooled Refrigeration Condensing Unit
ESIE17-20A
Charge a proper amount of
refrigerant.
Open the stop valve.
Eliminate the slugging of
refrigerant.
Eliminate the slugging of
refrigerant.
Connect the compressor lead wire.
Rectify, apply power, and then
restart operation.
Recheck for the compressor and
the refrigerant circuit.
Eliminate the slugging of
refrigerant.
Replace the INV. compressor.
Replace the INV. compressor.
Replace the compressor inverter
PCB [A2P].
Recheck the compressor and
refrigerant system.