Service
-
-
E49 - LP alarm
YES
YES
YES
Correct it.
NO
NO
NO
YES
NO
YES
NO
Is the low pressure sensor
correctly connected?
Check the value on the low
pressure sensor, via indoor
unit, in: (1) stationary
compressor, (2) compressor
operation.
Is the value around 0 MPa, without
significant change, both in states
(1) and (2)?
Check the insulation resistance on
the low pressure sensor.
Is the resistance greater than 100
ohm at DC 500 V?
Connect a pressure gauge to the
low pressure pipe and measure in
state (1). Compare with the value
shown on the indoor unit.
Replace the low pressure
sensor.
Is the difference less than 0.2 MPa?
Advance to checking the refrigerant
circuit on the next page.
Connect a new low pressure
sensor to the control PCB and
position it open in the atmosphere.
Is the pressure 0 MPa in the indoor
unit?
Replace the control PCB.
Replace the low pressure
sensor.
Troubleshooting guide
Содержание FDCW100VNX
Страница 7: ...For Home Owners 6 For Home Owners ...
Страница 20: ...Installation 19 Installation ...
Страница 42: ...Control 41 Control ...
Страница 66: ...System description 65 System description ...
Страница 81: ...Service 80 Service ...
Страница 138: ...Service Component replacement HM270V FDCW100VNX K E L LEK 1 2 5 6 LEK 3 4 LEK 7 LEK LEK LEK Component replacement ...
Страница 148: ...Components 147 Components ...
Страница 155: ...Technical data 154 Technical data ...
Страница 156: ...Technical data Electrical circuit diagram 155 Electrical circuit diagram HM270V ...
Страница 157: ...Technical data Electrical circuit diagram 156 ...
Страница 158: ...Technical data Electrical circuit diagram 157 ...
Страница 159: ...Technical data Electrical circuit diagram 158 ...
Страница 160: ...Technical data Electrical circuit diagram 159 ...
Страница 166: ...Technical data 165 Dimensions Indoor unit 32 32 55 95 65 52 185 40 42 645 30 60 1760 350 337 127 500 550 Dimensions ...