SiBE18-821_C
Troubleshooting for Outdoor Unit
Troubleshooting
401
7.16 Low Pressure Sensor Abnormality
Remote
Controller
Display
JC
Method of
Malfunction
Detection
The pressure detected by low pressure sensor determines the error.
Malfunction
Decision
Conditions
When the low pressure sensor is short circuit or open circuit
Supposed
Causes
Defective low pressure sensor
Wrong connection with high pressure sensor
Defective main PCB (A1P)
Troubleshooting
∗
1: Voltage measurement point
∗
2: For pressure / voltage characteristics graph, refer to “Pressure Sensor” on page 429.
Is the
low pressure
sensor connected to
X18A (blue) on the
main PCB
(A1P)?
The
relationship
between the
∗
1
VL and low pressure is
normal (see
∗
2) when
voltage is measured
between the pins 2
and 3 of X18A
(see
∗
1)?
Replace the low pressure
sensor.
(R13033)
Connect the low pressure
sensor and turn on again.
NO
Replace the main PCB
(A1P).
YES
YES
NO
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Main PCB (A1P)
X18A (Blue)
Red
Black
Lo
w pressure sensor
White
(R13034)
Measure the voltage here.
Microcomputer
A/D input
Содержание Super Multi Plus E-Series BPMKS967B2B
Страница 1: ...Service Manual E Series SiBE18 821_C Applied Models Super Multi Plus Heat Pump...
Страница 13: ...SiBE18 821_C List of Functions 1 Part 1 List of Functions 1 Functions 2...
Страница 264: ...SA Indoor Unit FFQ FCQ FDBQ FBQ FHQ Series SiBE18 821_C 252 Operation Manual 2 Start 5s 5s 5s 5s 5s End...
Страница 471: ...SiBE18 821_C BP Unit Removal Procedure 459 Step Procedure Points Clamps Q0529...
Страница 491: ...Revision History Date News No Contents 2010 11 9 M 10013 Correction of troubleshooting flowchart AF for SkyAir models...