SiENBE18-621
Troubleshooting for Outdoor Unit
Troubleshooting
335
7.26 Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure
Remote Control
Display
U0
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection
Short of gas malfunction is detected by discharge pipe temperature thermistor and low pressure
saturation temperature.
Malfunction
Decision
Conditions
Microcomputer judge and detect if the system is short of refrigerant.
H
Malfunction is not decided while the unit operation is continued.
Supposed
Causes
"
Out of gas or refrigerant system clogging (incorrect piping)
"
Defect of pressure sensor
"
Defect of outdoor unit PCB (A1P)
"
Defect of thermistor R3T
Summary of Contents for BPMKS967B2B
Page 1: ...SiENBE18 621 E Series Service Manual Applied Models Super Multi Plus Heat Pump...
Page 12: ...SiENBE18 621 List of Functions 1 Part 1 List of Functions 1 List of Functions 2...
Page 19: ...List of Functions SiENBE18 621 8 List of Functions...
Page 33: ...Specifications SiENBE18 621 22 Specifications...
Page 69: ...Refrigerant Flow for Each Operation Mode SiENBE18 621 58 Refrigerant Circuit...
Page 121: ...Indoor Unit SkyAir Models SiENBE18 621 110 Function...
Page 169: ...Instruction SiENBE18 621 158 System Configuration FTXS 20 25 35C Indoor Unit...
Page 371: ...Method of Replacing The Inverter s Power Transistors Modules SiENBE18 621 360 Troubleshooting...
Page 393: ...SiENBE18 621 vi Index...