- 214 -
Service
'19 • HM-T-340
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 Ω 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.(3~6HP)
Replace the low pressure
sensor.
To next page
Troubleshooting guide
Содержание FDCW100VNX-A
Страница 7: ... 5 Technical data 19 HM T 340 Technical data ...
Страница 36: ... 34 Technical data 19 HM T 340 Dimensions FDCW71VNX A Meaning of symbol ...
Страница 38: ... 36 Technical data 19 HM T 340 FDCW140VNX A Meaning of symbol Dimensions ...
Страница 41: ... 39 Technical data 19 HM T 340 Electrical circuit diagram ...
Страница 42: ... 40 Technical data 19 HM T 340 Electrical circuit diagram ...
Страница 43: ... 41 Technical data 19 HM T 340 Electrical circuit diagram ...
Страница 44: ... 42 Technical data 19 HM T 340 Electrical circuit diagram ...
Страница 45: ... 43 Technical data 19 HM T 340 Electrical circuit diagram ...
Страница 46: ... 44 Technical data 19 HM T 340 Electrical circuit diagram ...
Страница 47: ... 45 Technical data 19 HM T 340 Electrical circuit diagram ...
Страница 48: ... 46 Technical data 19 HM T 340 Electrical circuit diagram ...
Страница 49: ... 47 Technical data 19 HM T 340 Electrical circuit diagram Split box HSB60 W ...
Страница 50: ... 48 Technical data 19 HM T 340 HSB100 Electrical circuit diagram ...
Страница 51: ... 49 Technical data 19 HM T 340 HSB140 Electrical circuit diagram ...
Страница 52: ... 50 Technical data 19 HM T 340 Electrical circuit diagram Outdoor units FDCW60VNX A ...
Страница 57: ... 55 Technical data 19 HM T 340 Electrical circuit diagram POWER SOURCE RC HY20 W sheet 3 ...
Страница 58: ... 56 Technical data 19 HM T 340 Electrical circuit diagram RC HY20 W sheet 4 ...
Страница 61: ... 59 Technical data 19 HM T 340 Electrical circuit diagram POWER SOURCE RC HY40 W sheet 3 ...
Страница 62: ... 60 Technical data 19 HM T 340 Electrical circuit diagram RC HY40 W sheet 4 ...
Страница 63: ... 61 Technical data 19 HM T 340 Electrical circuit diagram INDOOR UNIT HSB INDOOR UNIT HSB RC HY40 W sheet 5 ...
Страница 64: ... 62 Technical data 19 HM T 340 Electrical circuit diagram RC HY40 W sheet 6 ...
Страница 65: ...Installation 19 HM T 340 Installation 63 ...
Страница 133: ...Control 19 HM T 340 Control 131 ...
Страница 170: ... 168 Service 19 HM T 340 Service ...
Страница 263: ... 258 Service 19 HM T 340 Outdoor unit FDCW60VNX FDCW71VNX Component replacement ...
Страница 264: ...Service 259 19 HM T 340 FDCW100VNX FDCW140VNX LEK LEK Component replacement ...
Страница 290: ... 285 Components 19 HM T 340 Components ...
Страница 300: ... 295 Components 19 HM T 340 PT300 Component positions ...
Страница 301: ... 296 Components 19 HM T 340 Component positions PT300 PT300 A mm 1634 B mm 743 C mm 673 ...
Страница 302: ... 297 Components 19 HM T 340 PT500 Component positions ...
Страница 303: ... 298 Components 19 HM T 340 PT500 Component positions PT500 A mm 1835 B mm 897 C mm 832 ...
Страница 311: ...THo R THo A THo D Outside units FDCW60VNX 306 Components 19 HM T 340 Piping system ...