35
DIAGNOSIS AND SOLUTION (CONT)
Overload current protection diagnosis and solution (F0)
Error Code
F0
Malfunction decision conditions
An abnormal current rise is detected by checking the specified current detection circuit.
Supposed causes
S
Power supply problems
S
System blockage
S
PCB faulty
S
Wiring mistake
S
Compressor malfunction
Troubleshooting
Check the power supply
Check the connections and
wires
Stop the unit
No
Yes
No
Correct the connections or
replace the wires.
Yes
Replace the outdoor unit
Yes
Check the reactor
No
Replace outdoor main PCB
Check for system blockage
Yes
No
Clear the blockage
Check the compressor
resistance values
Yes
No
Replace the compressor
Summary of Contents for 38MHRB series
Page 7: ...7 DIMENSIONS OUTDOOR CONT Unit inch mm Fig 3 Size 24K...
Page 11: ...11 WIRING DIAGRAMS COOLING ONLY Fig 7 Wiring Diagram Size Cooling Only Size 12K 115V...
Page 12: ...12 WIRING DIAGRAMS COOLING ONLY CONTINUED Fig 8 Wiring Diagram Cooling Only Size 12K 230V...
Page 13: ...13 WIRING DIAGRAMS COOLING ONLY CONTINUED Fig 9 Wiring Diagram Cooling Only Sizes 18 24K...
Page 14: ...14 WIRING DIAGRAMS HEAT PUMP Fig 10 Wiring Diagram Heat Pump Size 12K 115V...
Page 15: ...15 WIRING DIAGRAMS HEAT PUMP CONTINUED Fig 11 Wiring Diagram Heat Pump Sizes 09 12 18 230V...
Page 16: ...16 WIRING DIAGRAMS HEAT PUMP CONTINUED Fig 12 Wiring Diagram Heat Pump Size 24 230V...
Page 37: ...37 DIAGNOSIS AND SOLUTION CONT Fig 36 P U Fig 37 P V...
Page 38: ...38 DIAGNOSIS AND SOLUTION CONT Fig 38 P W Fig 39 N U...
Page 39: ...39 DIAGNOSIS AND SOLUTION CONT Fig 40 N V Fig 41 N W...
