Mitsubishi Outdoor Unit Split-Type Air Conditioner MUZ-AP35VGH

Warning: Ensure the connector between the compressor and the power module (IC700) is disconnected before starting the procedure.

Inverter activation successful?

Measure the voltage balance between the terminals. Expected range is 50 - 130 V.

Operation method: Start cooling or heating operation by pressing EMERGENCY OPERATION switch on the indoor unit.

Measurement point: Measure AC voltage between the lead wires at 3 points.

Voltage between BLK (U)-WHT (V)

Voltage between BLK (U)-RED (W)

Note: 1. Output voltage varies according to power supply voltage. 2. Measure the voltage by analog type tester. 3. During this check, LED of the inverter P.C. board blinks 9 times.

Warning: Disconnect the connector between the compressor and the power module (IC700) before proceeding

Ohmmeter zeroed before measurement

Resistance measurement between BLK-WHT

Resistance measurement between BLK-RED

Resistance measurement between WHT-RED

Sign off on the compressor winding check

Remove the screw fixing the service panel

Pull down the service panel and remove it

Disconnect the power supply cord and indoor/outdoor connecting wire

Remove the screws fixing the top panel

Remove the screws fixing the cabinet

Remove the screws fixing the back panel

Connect the compressor and activate the inverter

Compressor connected and inverter activated

Start heating or cooling operation by pressing EMERGENCY OPERATION switch on the indoor unit

Heating or cooling operation started

Time from the start of compressor to the stop of compressor due to overcurrent

Sign off on the compressor operation time check

(1) Remove the cabinet and panels. (Refer to section 1.)

(2) Disconnect the following connectors:

(3) Remove the propeller fan nut.

(5) Remove the screws fixing the fan motor.