Daikin LXE10E-A Service Manual page 144

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Symptom
F. Evaporator Faulty power supply of
fan and compressor system
condenser Burnt-out of compressor
fan run, but motor (disconnection)
compressor Faulty connection of
does not run terminal board of
(throbs) compressor (disconnection,
entering of water)
Disconnection of
magnetic contactor
coil
Faulty controller (Ry)
Faulty RPP
(reverse phase
protector)
Stopped if the main
power supply
voltage drops and
E103 or E105
occurs to the
compressor
Cause
contactor for compressor
Is the voltage between
and 155 24V AC?
Is the voltage between
the wiring 133 and 134 (1-2 of CN37)
※ 1. Screwed cramp type terminal board
33
133
155
※Refer to Schematic wiring diagram
All the three phases should be AC 300 V or higher
6-2
Checkpoint
YES
Is the magnetic
turned ON?
NO
YES
the wiring 134
NO
YES
24V AC? ※ 1 ※ 2
NO
NO
(Reverse phase)
Faulty controller Ry
※ 2. Connector type terminal board
34
134
RPP
155
C C
Remedy
Check for disconnection of
compressor motor coil
Check the terminals
Check the voltage
Faulty coil of magnetic
contactor for compressor
Faulty RPP
operation
YES
(Normal phase)
Normal phase?
Replace RPP
Check the controller
and compressor
CN37
2
1
RPP
C C