Error code P6: Inverter module fault
Switch off power to the system for 1 minute, re-
establish power supply, start system
Measure resistances of the motor windings of
the compressor
U - V: 0.5 - 5.0 Ohm
V - W: 0.5 - 5.0 Ohm
W - U: 0.5 - 5.0 Ohm ?
NO
Replace compressor
YES
Is the voltage between the capacitors of the
compressor 540 – 600 Volt?
NO
Replace defective capacitor
YES
Is the voltage between P and N on the inverter
board approx. 570 Volt?
NO
Replace the control board
YES
Replace inverter board
57
Summary of Contents for MVV 1200 Dc
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