- 210 -
Service
'19 • HM-T-340
E42 - Current cut
YES
YES
YES
Check power source voltage.
NO
NO
NO
NO
YES
YES
NO
NO
YES
Is the power source voltage OK?
Are the service valves open?
Is the high pressure during
operation OK?
Are the checks of the insulation
resistance and the coil’s resistance
(0.4 Ω or greater at 25 °C) for
the compressor OK?
Is the power transistor check OK?
- Is the air circulation at the outdoor
unit obstructed?
- Is the installation space sufficient?
- During cooling, does the fan motor
run?
- Are the service valves fully open?
- Is the filter blocked?
- Are the low pressure sensor
and the suction gas sensor OK?
- Does the compressor sound
different than usual?
Does the fault disappear if the
current is switched off and on
several times?
Temporary surge on incoming
supply may have caused the alarm.
Open the service valves.
Check the amount of refrigerant.
Check the refrigerant circuit.
Replace the compressor.
Replace the inverter PCB.
Replace the inverter PCB.
Troubleshooting guide
Summary of Contents for FDCW100VNX-A
Page 7: ... 5 Technical data 19 HM T 340 Technical data ...
Page 36: ... 34 Technical data 19 HM T 340 Dimensions FDCW71VNX A Meaning of symbol ...
Page 38: ... 36 Technical data 19 HM T 340 FDCW140VNX A Meaning of symbol Dimensions ...
Page 41: ... 39 Technical data 19 HM T 340 Electrical circuit diagram ...
Page 42: ... 40 Technical data 19 HM T 340 Electrical circuit diagram ...
Page 43: ... 41 Technical data 19 HM T 340 Electrical circuit diagram ...
Page 44: ... 42 Technical data 19 HM T 340 Electrical circuit diagram ...
Page 45: ... 43 Technical data 19 HM T 340 Electrical circuit diagram ...
Page 46: ... 44 Technical data 19 HM T 340 Electrical circuit diagram ...
Page 47: ... 45 Technical data 19 HM T 340 Electrical circuit diagram ...
Page 48: ... 46 Technical data 19 HM T 340 Electrical circuit diagram ...
Page 49: ... 47 Technical data 19 HM T 340 Electrical circuit diagram Split box HSB60 W ...
Page 50: ... 48 Technical data 19 HM T 340 HSB100 Electrical circuit diagram ...
Page 51: ... 49 Technical data 19 HM T 340 HSB140 Electrical circuit diagram ...
Page 52: ... 50 Technical data 19 HM T 340 Electrical circuit diagram Outdoor units FDCW60VNX A ...
Page 57: ... 55 Technical data 19 HM T 340 Electrical circuit diagram POWER SOURCE RC HY20 W sheet 3 ...
Page 58: ... 56 Technical data 19 HM T 340 Electrical circuit diagram RC HY20 W sheet 4 ...
Page 61: ... 59 Technical data 19 HM T 340 Electrical circuit diagram POWER SOURCE RC HY40 W sheet 3 ...
Page 62: ... 60 Technical data 19 HM T 340 Electrical circuit diagram RC HY40 W sheet 4 ...
Page 64: ... 62 Technical data 19 HM T 340 Electrical circuit diagram RC HY40 W sheet 6 ...
Page 65: ...Installation 19 HM T 340 Installation 63 ...
Page 133: ...Control 19 HM T 340 Control 131 ...
Page 170: ... 168 Service 19 HM T 340 Service ...
Page 263: ... 258 Service 19 HM T 340 Outdoor unit FDCW60VNX FDCW71VNX Component replacement ...
Page 264: ...Service 259 19 HM T 340 FDCW100VNX FDCW140VNX LEK LEK Component replacement ...
Page 290: ... 285 Components 19 HM T 340 Components ...
Page 300: ... 295 Components 19 HM T 340 PT300 Component positions ...
Page 301: ... 296 Components 19 HM T 340 Component positions PT300 PT300 A mm 1634 B mm 743 C mm 673 ...
Page 302: ... 297 Components 19 HM T 340 PT500 Component positions ...
Page 303: ... 298 Components 19 HM T 340 PT500 Component positions PT500 A mm 1835 B mm 897 C mm 832 ...
Page 311: ...THo R THo A THo D Outside units FDCW60VNX 306 Components 19 HM T 340 Piping system ...