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Troubleshooting by Indication on the Remote Controller
J3
3.23 "
" Outdoor Unit: Malfunction of Discharge Pipe
Thermistor (R3T)
J3
Remote
Controller
Display
Applicable
CMSQ200A7, 250A7
Models
Method of
Malfunction is detected from the temperature detected by discharge pipe temperature
thermistor.
Malfunction
Detection
Malfunction
When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Decision
Conditions
Supposed
Causes
Troubleshooting
The alarm indicator is displayed when the fan is being used also.
168
Defect of thermistor (R3T) for outdoor unit discharge pipe
Defect of outdoor unit PC board (A1P)
Defect of thermistor connection
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Confirm which discharge
thermistor is abnormal using
outdoor unit "monitor mode".
(Refer to page 134 and 135)
Connector
is connected to X29A
of outdoor unit
PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
R3T from the outdoor unit
PC board.
(2.5kΩ to
1.3kΩ)
YES
Refer to "Thermistor Resistance / Temperature Characteristics" table on P.248.
NO
NO
SiBE28-805
Connect the connector and turn on
again.
Replace the thermistor (R3T).
Replace outdoor unit PC board
(A1P).
Troubleshooting

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Troubleshooting

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This manual also for:

Fmdq50-125a7v3b, Cmsq250a7w1b, Fmcq50-125a7veb

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