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Daikin CMSQ200A7W1B Service Manual: Ja" Outdoor Unit: Malfunction Of High Pressure Sensor

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SiBE28-805
JA
3.28 "
" Outdoor Unit: Malfunction of High Pressure Sensor
JA
Remote
Controller
Display
Applicable
CMSQ200A7, 250A7
Models
Method of
Malfunction is detected from the pressure detected by the high pressure sensor.
Malfunction
Detection
Malfunction
When the high pressure sensor is short circuit or open circuit.
Decision
Conditions
Supposed
Causes
Troubleshooting
1: Voltage measurement point
2: Refer to "Pressure Sensor, Pressure / Voltage Characteristics" table on P.249.
Troubleshooting
Defect of high pressure sensor system
Connection of low pressure sensor with wrong connection.
Defect of outdoor unit PC board.
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
The high
pressure sensor is
connected to X32A of
outdoor unit PC
board (A1P).
YES
The
relationship
between the ∗1
VH and high pressure
is normal (see ∗2) when
voltage is measured between
X32A pins (1) and (3) of
outdoor unit PC
board (A1P)
(see ∗1).
NO
Troubleshooting by Indication on the Remote Controller
NO
YES
Connect the high pressure sensor
and turn on again.
Replace outdoor unit PC board
(A1P).
Replace the high pressure sensor.
173

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Troubleshooting

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This manual also for:

Fmdq50-125a7v3b, Cmsq250a7w1b, Fmcq50-125a7veb

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