Inverter Pcb A/F Module Anomaly - Mitsubishi Heavy Industries FDT71VNXWVH Service Manual

Hyper inverter packaged air-conditioners (split system, air to air heat pump type)

Table of Contents

Error code

Remote control:

E47

Outdoor control PCB

Outdoor inverter

1. Applicable model

2. Error detection method

In order to prevent from

overcurrent of A/F, if the current

exceeds the specifications, it

makes the compressor stopping.

3. Condition of error displayed

• If the output current of A/F

exceeds the specifications,

it makes the compressor

stopping.

4. Presumable cause

• Defective inverter PCB

Note:

LED

Green

Indoor

Keeps flashing

Yellow LED

PCB

7-time flashing

5. Troubleshooting

power source

voltage OK?

checked results of

insulation resistance and

resistance between terminals (1) of

compressor motor

Red

Content

Stays off