Daikin REMQ14PY1 [333/491] Caution be su re to t u rn off power s witch b efore connect or di s connect connector or p a rt s d a m a ge m a y b e occ u rred

Daikin REMQ14PY1 [333/491] Caution be su re to t u rn off power s witch b efore connect or di s connect connector or p a rt s d a m a ge m a y b e occ u rred
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YES NO
YES
Faulty radiation from the power unit
• Blocked air suction port
Stained radiation fin
• High outdoor temperature
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
While in monitor mode, check
whether the system is right-hand
(control PC board 1) or left-hand
(control PC board 3).
While in monitor mode,
check the outdoor unit
concerned.
Single system Multi system
NO
YES
Replace the thermistor.
NO
Replace the compressor inverter
PC board.
Continue operation.
It is supposed that the radiation
fin temperature became high due
to some field factors. In this
connection, check the following
points:
Stained radiation fin
• Air flow obstructed with dirt or
foreign matters
• Damage to fan impellers
Too high o
utdoor temperature
Turn OFF the power supply,
and then make measurement
of resistance of the radiation
fin thermistor.
Connect and disconnect
the connector (X111A) for
the fin thermistor, and then
properly connect it.
YES
Is the single system
applied to the outdoor
unit?
The radiation
fin of the inverter PC board
concerned exceeded a
temperature of
87°C.
Is the thermistor
resistance normal?
Does the
malfunction recur
when the power supply
turns ON to start the
compressor?

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